##### Table of Contents

---



UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



---



FORM 10-Q



---



|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------



For the quarterly period ended March 31, 2005.



OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------



For the transition period from
 to



Commission File Number: 000-30615



---



SIRENZA MICRODEVICES, INC.

(Exact name of registrant as specified in its charter)



---



|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 77-0073042                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)
|                                                               | 
|303 S. Technology Court, Broomfield, CO                        |  | 80021                               
|(Address of principal executive offices)                       |  | (Zip Code)                          



(303) 327-3030

(Registrants telephone number, including area code)



N/A

(Former name, former address and former fiscal year, if changed since last report)



---



Indicate by check mark whether the registrant (1) has filed all reports required to be filed
by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) had been subject to such filing requirements for the past 90
days. Yes  x    No ̈



Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule
12b-2 of the Act). Yes  x    No ̈



As of March 31, 2005 there were 35,582,115 shares of registrants Common Stock
outstanding.



---



---

##### Table of Contents

SIRENZA MICRODEVICES, INC.



INDEX



|                              |  |                                                                                       |  |     
|----------------------------- |  | ------------------------------------------------------------------------------------- |  | ----
|                              |  |                                                                                       |  | Page
|Part I. Financial Information |  |                                                                                      
|                              |  |                                                                                      
|Item 1.                       |  | Financial Statements                                                                  |  | 1   
|                              |  |                                                                                      
|Item 2.                       |  | Managements Discussion and Analysis of Financial Condition and Results of Operations |  | 10  
|                              |  |                                                                                      
|Item 3.                       |  | Quantitative and Qualitative Disclosures About Market Risk                            |  | 30  
|                              |  |                                                                                      
|Item 4.                       |  | Controls and Procedures                                                               |  | 31  
|                              | 
|Part II. Other Information    |  |                                                                                      
|                              |  |                                                                                      
|Item 1.                       |  | Legal Proceedings                                                                     |  | 31  
|                              |  |                                                                                      
|Item 2.                       |  | Unregistered Sales of Equity Securities and Use of Proceeds                           |  | 31  
|                              |  |                                                                                      
|Item 3.                       |  | Defaults Upon Senior Securities                                                       |  | 32  
|                              |  |                                                                                      
|Item 4.                       |  | Submission of Matters to a Vote of Security Holders                                   |  | 32  
|                              |  |                                                                                      
|Item 5.                       |  | Other Information                                                                     |  | 32  
|                              |  |                                                                                      
|Item 6.                       |  | Exhibits                                                                              |  | 32  
|                              | 
|Signatures                    |  | 34                                                                                   





---

##### Table of Contents

Part I. Financial Information



|Item 1. | Financial Statements
|------- | --------------------



SIRENZA MICRODEVICES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands)



|                                           |  |                           |         |   |                  |   |         |  
|------------------------------------------ |  | ------------------------- | ------- | - | ---------------- | - | ------- | -
|                                           |  | March 31,2005 (unaudited) |         |   | December 31,2004 |  
|ASSETS                                     |  |                           |         |   |                  |   |         |  
|Current assets:                            |  |                           |         |   |                  |   |         |  
|Cash and cash equivalents                  |  | $                         | 3,034   |   |                  | $ | 2,440   |  
|Short-term investments                     |  |                           | 7,942   |   |                  |   | 8,000   |  
|Accounts receivable, net                   |  |                           | 8,922   |   |                  |   | 10,968  |  
|Inventories                                |  |                           | 8,679   |   |                  |   | 8,496   |  
|Other current assets                       |  |                           | 1,049   |   |                  |   | 674     |  
|                                           |  |                           |         |   |                  |   |         |  
|Total current assets                       |  |                           | 29,626  |   |                  |   | 30,578  |  
|Property and equipment                     |  |                           | 7,672   |   |                  |   | 8,273   |  
|Investment in GCS                          |  |                           | 3,065   |   |                  |   | 3,065   |  
|Other non-current assets                   |  |                           | 1,480   |   |                  |   | 1,426   |  
|Acquisition-related intangibles            |  |                           | 6,456   |   |                  |   | 6,921   |  
|Goodwill                                   |  |                           | 5,631   |   |                  |   | 5,631   |  
|                                           |  |                           |         |   |                  |   |         |  
|Total assets                               |  | $                         | 53,930  |   |                  | $ | 55,894  |  
|                                           |  |                           |         |   |                  |   |         |  
|                                           |  |                          
|LIABILITIES AND STOCKHOLDERS EQUITY       |  |                           |         |   |                  |   |         |  
|Current liabilities:                       |  |                           |         |   |                  |   |         |  
|Accounts payable                           |  | $                         | 3,702   |   |                  | $ | 3,136   |  
|Accrued compensation and other expenses    |  |                           | 3,297   |   |                  |   | 3,040   |  
|Accrued acquisition costs                  |  |                           | 30      |   |                  |   | 779     |  
|Deferred margin on distributor inventory   |  |                           | 879     |   |                  |   | 1,069   |  
|Accrued restructuring                      |  |                           | 289     |   |                  |   | 518     |  
|Capital lease obligations, current portion |  |                           | 38      |   |                  |   | 56      |  
|                                           |  |                           |         |   |                  |   |         |  
|Total current liabilities                  |  |                           | 8,235   |   |                  |   | 8,598   |  
|Other long-term liabilities                |  |                           | 18      |   |                  |   | 18      |  
|Commitments and contingencies              |  |                           |         |   |                  |   |         |  
|Stockholders equity:                      |  |                           |         |   |                  |   |         |  
|Common stock                               |  |                           | 36      |   |                  |   | 35      |  
|Additional paid-in capital                 |  |                           | 136,874 |   |                  |   | 136,579 |  
|Treasury stock, at cost                    |  |                           | (165    | ) |                  |   | (165    | )
|Accumulated other comprehensive loss       |  |                           | (107    | ) |                  |   | (53     | )
|Accumulated deficit                        |  |                           | (90,961 | ) |                  |   | (89,118 | )
|                                           |  |                           |         |   |                  |   |         |  
|Total stockholders equity                 |  |                           | 45,677  |   |                  |   | 47,278  |  
|                                           |  |                           |         |   |                  |   |         |  
|Total liabilities and stockholders equity |  | $                         | 53,930  |   |                  | $ | 55,894  |  
|                                           |  |                           |         |   |                  |   |         |  



See accompanying notes.



1



---

##### Table of Contents



SIRENZA MICRODEVICES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share data)

(Unaudited)



|                                                                                                                                                                  |  |                             |        |   |      |   |       
|----------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------- | ------ | - | ---- | - | ------
|                                                                                                                                                                  |  | Three Months EndedMarch 31,
|                                                                                                                                                                  |  | 2005                        |        |   | 2004
|Net revenues                                                                                                                                                      |  | $                           | 12,167 |   |      | $ | 13,801
|Cost of revenues                                                                                                                                                  |  |                             | 6,841  |   |      |   | 7,391 
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Gross profit                                                                                                                                                      |  |                             | 5,326  |   |      |   | 6,410 
|Operating expenses:                                                                                                                                               |  |                             |        |   |      |   |       
|Research and development (exclusive of amortization of deferred stock compensation of $0 and $2 for the three months ended March 31, 2005 and
2004, respectively) |  |                             | 2,811  |   |      |   | 2,113 
|Sales and marketing (exclusive of amortization of deferred stock compensation of $0 and $1 for the three months ended March 31, 2005 and 2004,
respectively)      |  |                             | 1,831  |   |      |   | 1,903 
|General and administrative                                                                                                                                        |  |                             | 2,200  |   |      |   | 1,825 
|Amortization of deferred stock compensation                                                                                                                       |  |                             |       |   |      |   | 3     
|Amortization of acquisition-related intangible assets                                                                                                             |  |                             | 465    |   |      |   | 431   
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Total operating expenses                                                                                                                                          |  |                             | 7,307  |   |      |   | 6,275 
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Income (loss) from operations                                                                                                                                     |  |                             | (1,981 | ) |      |   | 135   
|Interest expense                                                                                                                                                  |  |                             | 2      |   |      |   | 5     
|Interest and other income, net                                                                                                                                    |  |                             | 63     |   |      |   | 32    
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Income (loss) before income taxes                                                                                                                                 |  |                             | (1,920 | ) |      |   | 162   
|Provision for (benefit from) income taxes                                                                                                                         |  |                             | (77    | ) |      |   |      
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Net income (loss)                                                                                                                                                 |  | $                           | (1,843 | ) |      | $ | 162   
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Basic net income (loss) per share                                                                                                                                 |  | $                           | (0.05  | ) |      | $ | 0.00  
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Diluted net income (loss) per share                                                                                                                               |  | $                           | (0.05  | ) |      | $ | 0.00  
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Shares used to compute basic net income (loss) per share                                                                                                          |  |                             | 35,463 |   |      |   | 34,197
|                                                                                                                                                                  |  |                             |        |   |      |   |       
|Shares used to compute diluted net income (loss) per share                                                                                                        |  |                             | 35,463 |   |      |   | 37,290
|                                                                                                                                                                  |  |                             |        |   |      |   |       



See accompanying notes.



2



---

##### Table of Contents



SIRENZA MICRODEVICES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)



|                                                                                         |  |                             |        |   |      |   |        |  
|---------------------------------------------------------------------------------------- |  | --------------------------- | ------ | - | ---- | - | ------ | -
|                                                                                         |  | Three MonthsEnded March 31, |       
|                                                                                         |  | 2005                        |        |   | 2004 |  
|Operating Activities                                                                     |  |                             |        |   |      |   |        |  
|Net income (loss)                                                                        |  | $                           | (1,843 | ) |      | $ | 162    |  
|Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |                             |        |   |      |   |        |  
|Depreciation and amortization                                                            |  |                             | 1,551  |   |      |   | 1,485  |  
|Compensation expense related to employee equity awards                                   |  |                             | 19     |   |      |   |       |  
|Loss on disposal of property and equipment                                               |  |                             | 15     |   |      |   |       |  
|Amortization of deferred stock compensation                                              |  |                             |       |   |      |   | 3      |  
|Changes in operating assets and liabilities:                                             |  |                             |        |   |      |   |        |  
|Accounts receivable                                                                      |  |                             | 2,046  |   |      |   | (1,202 | )
|Inventories                                                                              |  |                             | (183   | ) |      |   | (930   | )
|Other assets                                                                             |  |                             | (429   | ) |      |   | 32     |  
|Accounts payable                                                                         |  |                             | 566    |   |      |   | 121    |  
|Accrued expenses                                                                         |  |                             | (492   | ) |      |   | 99     |  
|Accrued restructuring                                                                    |  |                             | (229   | ) |      |   | (241   | )
|Deferred margin on distributor inventory                                                 |  |                             | (190   | ) |      |   | 539    |  
|                                                                                         |  |                             |        |   |      |   |        |  
|Net cash provided by operating activities                                                |  |                             | 831    |   |      |   | 68     |  
|Investing Activities                                                                     |  |                             |        |   |      |   |        |  
|Sales/maturities of available-for-sale securities, net                                   |  |                             | 4      |   |      |   | 524    |  
|Purchases of property and equipment                                                      |  |                             | (500   | ) |      |   | (407   | )
|                                                                                         |  |                             |        |   |      |   |        |  
|Net cash provided by (used in) investing activities                                      |  |                             | (496   | ) |      |   | 117    |  
|Financing Activities                                                                     |  |                             |        |   |      |   |        |  
|Principal payments on capital lease obligations                                          |  |                             | (18    | ) |      |   | (16    | )
|Proceeds from exercise of stock options and employee stock plans                         |  |                             | 277    |   |      |   | 167    |  
|                                                                                         |  |                             |        |   |      |   |        |  
|Net cash provided by financing activities                                                |  |                             | 259    |   |      |   | 151    |  
|Increase in cash and cash equivalents                                                    |  |                             | 594    |   |      |   | 336    |  
|Cash and cash equivalents at beginning of period                                         |  |                             | 2,440  |   |      |   | 7,468  |  
|                                                                                         |  |                             |        |   |      |   |        |  
|Cash and cash equivalents at end of period                                               |  | $                           | 3,034  |   |      | $ | 7,804  |  
|                                                                                         |  |                             |        |   |      |   |        |  
|Supplemental disclosures of noncash investing and financing activities                   |  |                             |        |   |      |   |        |  
|Net book value of property and equipment disposed of                                     |  | $                           |       |   |      | $ | 83     |  



See accompanying notes.



3



---

##### Table of Contents



|Note 1: | Basis of Presentation
|------- | ---------------------



The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States
for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by accounting principles generally accepted in the United States for complete
financial statements. In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation have been included. Operating results for the three month period ended March 31, 2005
are not necessarily indicative of the results that may be expected for any subsequent period or for the year as a whole.



The balance sheet at December 31, 2004 has been derived from the audited financial statements at that date but does not include all of the disclosures required by
accounting principles generally accepted in the United States for complete financial statements.



The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements of Sirenza Microdevices, Inc. (the Company) for the fiscal year
ended December 31, 2004, which are included in the Companys Form 10-K filed with the Securities and Exchange Commission (SEC) on March 3, 2005.



The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. Intercompany accounts and transactions
have been eliminated.



Stock-Based Compensation



The Company has elected to account for its employee stock plans in accordance with
Accounting Principles Board Opinion No. 25, Accounting for Stock Issued to Employees (APB Opinion No. 25), as amended by Financial Accounting Standards Board (FASB) Interpretation No. 44 (FIN 44), Accounting for Certain
Transactions involving Stock Compensation an interpretation of APB Opinion No. 25, and to adopt the disclosure-only provisions as required under Statement of Financial Accounting Standards No. 123, Accounting for Stock-Based
Compensation (SFAS 123). Under APB Opinion No. 25, as amended by FIN 44, when the exercise price of the Companys employee stock options equals the market price of the underlying stock on the date of grant, no compensation expense is
recognized.



The following table illustrates the effect on net income (loss)
and earnings (loss) per share if the Company had applied the fair value recognition provisions of SFAS 123 to stock-based employee compensation, as amended by Statement of Financial Accounting Standards No. 148 Accounting for Stock Based
Compensation, Transition and Disclosures (SFAS 148). For purposes of this pro-forma disclosure, the value of the options is amortized ratably to expense over the options vesting periods.



|                                                                                                                                           |  |                             |        |   |      |   |        |  
|------------------------------------------------------------------------------------------------------------------------------------------ |  | --------------------------- | ------ | - | ---- | - | ------ | -
|                                                                                                                                           |  | Three Months EndedMarch 31, |       
|                                                                                                                                           |  | 2005                        |        |   | 2004 |  
|Net income (loss) - as reported                                                                                                            |  | $                           | (1,843 | ) |      | $ | 162    |  
|Add: Stock-based employee compensation expense, included in the determination of net income (loss) as reported, net of related tax
effects |  |                             | 19     |   |      |   | 3      |  
|Deduct: Stock-based employee compensation expense determined under the fair value method for all awards, net of related tax
effects        |  |                             | (1,728 | ) |      |   | (1,413 | )
|                                                                                                                                           |  |                             |        |   |      |   |        |  
|Pro forma net loss                                                                                                                         |  | $                           | (3,552 | ) |      | $ | (1,248 | )
|                                                                                                                                           |  |                             |        |   |      |   |        |  
|Net income (loss) per share:                                                                                                               |  |                             |        |   |      |   |        |  
|Basic and diluted - as reported                                                                                                            |  | $                           | (0.05  | ) |      | $ | 0.00   |  
|                                                                                                                                           |  |                             |        |   |      |   |        |  
|Basic and diluted - pro forma                                                                                                              |  | $                           | (0.10  | ) |      | $ | (0.04  | )
|                                                                                                                                           |  |                             |        |   |      |   |        |  



4



---

##### Table of Contents

|Note 2: | Acquisition of ISG Broadband, Inc.
|------- | ----------------------------------



On December 16, 2004, the Company acquired ISG Broadband, Inc. (ISG), a designer of RF gateway module and IC products for the cable TV, satellite radio and HDTV markets,
for approximately $6.9 million in cash and estimated direct transaction costs of approximately $789,000 for a total preliminary purchase price of $7.7 million. Additional cash consideration of up to $7.15 million may become due and payable by the
Company upon the achievement of margin contribution objectives attributable to sales of selected products for periods through December 31, 2007. To the extent sales of the selected products achieve a minimum gross margin percentage, the Company will
be required to make additional payments to the former shareholders of ISG for a portion or all of the gross profit earned on such sales, up to a pre-defined maximum, as outlined below. The future cash payout of additional consideration, if any, will
be payable in the quarter following the end of the applicable annual earn-out period, as outlined below, and will be recorded as additional goodwill. The range of possible payment is as follows (in thousands):



|                              |  |                        |   |                  |   |      
|----------------------------- |  | ---------------------- | - | ---------------- | - | -----
|                              |  | Possible Payment Range
|Earn-out Period               |  | Low Endof Range        |   | High Endof Range
|Year ending December 31, 2005 |  | $                      |  |                  | $ | 1,150
|Year ending December 31, 2006 |  | $                      |  |                  | $ | 3,000
|Year ending December 31, 2007 |  | $                      |  |                  | $ | 3,000
|                              |  |                        |   |                  |   |      
|                              |  | $                      |  |                  | $ | 7,150
|                              |  |                        |   |                  |   |      



The allocation of the purchase price
is preliminary until finalization of all direct transaction costs and pre-acquisition contingencies. The Company has identified a pre-acquisition contingency related to certain inventory products that are to be used for a specific application for
which ISG was not qualified by the customer to manufacture such products as of the consummation date of the acquisition. Prior to the closing of the acquisition, ISG had recorded an inventory valuation reserve of approximately $358,000 for the
excess of cost over estimated net realizable value for this inventory. To the extent the Company determines it is unable to sell this inventory because of a lack of qualification, an additional write-down of up to $350,000 would be required.
Likewise, to the extent Sirenza is able to sell this inventory for this specific application, a reduction to the reserve of up to $358,000 would be required. Adjustments to the aforementioned inventory reserve related to this specific contingency
prior to December 16, 2005, the estimated end of the allocation period, will be included in the allocation of the purchase price, resulting in an increase or decrease to goodwill. There have been no adjustments to the aforementioned inventory
reserves from the date of the acquisition to March 31, 2005.



Any adjustment to
the aforementioned inventory reserve subsequent to December 16, 2005 or related to events occurring subsequent to December 16, 2004 will be included in the determination of net income in the period in which the adjustment is determined.



The Company does not anticipate direct transaction costs to be materially different than
the current estimate of $789,000.



The goodwill resulting from this acquisition
has been assigned to the Amplifier division for segment reporting purposes and is expected to be deductible for income tax purposes.



The Companys results of operations include the effect of ISG subsequent to December 16, 2004.



|Note 3: | Amortizable acquisition-related intangible assets
|------- | -------------------------------------------------



Amortization of acquisition-related intangible assets totaled $465,000 and $431,000 for the three-month periods ended March 31, 2005 and 2004, respectively. The
amortization of acquisition-related intangible assets in the three-month period ended March 31, 2005 included amortization associated with the Companys acquisitions of Vari-L, Xemod and ISG. The amortization of acquisition-related intangible
assets in the three-month period ended March 31, 2004 included amortization associated with the Companys acquisitions of Vari-L and Xemod.



The Companys acquisition-related intangible assets were as follows (in thousands):



|                                                   |  |                     |       |                         |       |     |       |                     |   |                         |  |     |       |  |   |      
|-------------------------------------------------- |  | ------------------- | ----- | ----------------------- | ----- | --- | ----- | ------------------- | - | ----------------------- |  | --- | ----- |  | - | -----
|                                                   |  | March 31, 2005      |       | December 31, 2004      
|                                                   |  | GrossCarryingAmount |       | AccumulatedAmortization |       | Net |       | GrossCarryingAmount |   | AccumulatedAmortization |  | Net
|Amortizable acquisition-related intangible assets: |  |                     |       |                         |       |     |       |                     |   |                         |  |     |       |  |   |      
|                                                   |  |                     |       |                         |       |    
|Developed Product Technology                       |  | $                   | 6,810 |                         | 1,834 |     | 4,976 |                     | $ | 6,810                   |  | $   | 1,515 |  | $ | 5,295
|Customer Relationships                             |  |                     | 970   |                         | 640   |     | 330   |                     |   | 970                     |  |     | 546   |  |   | 424  
|Core Technology Leveraged                          |  |                     | 860   |                         | 4     |     | 856   |                     |   | 860                     |  |     |      |  |   | 860  
|Patented Core Technology                           |  |                     | 700   |                         | 417   |     | 283   |                     |   | 700                     |  |     | 375   |  |   | 325  
|Committed Customer Backlog                         |  |                     | 310   |                         | 310   |     |      |                     |   | 310                     |  |     | 310   |  |   |     
|Internal Use Software                              |  |                     | 70    |                         | 59    |     | 11    |                     |   | 70                      |  |     | 53    |  |   | 17   
|                                                   |  |                     |       |                         |       |     |       |                     |   |                         |  |     |       |  |   |      
|Total                                              |  | $                   | 9,720 |                         | 3,264 |     | 6,456 |                     | $ | 9,720                   |  | $   | 2,799 |  | $ | 6,921
|                                                   |  |                     |       |                         |       |     |       |                     |   |                         |  |     |       |  |   |      



5



---

##### Table of Contents

As of March 31, 2005, the Companys estimated amortization expense of acquisition-related intangible assets over the
next five years and thereafter is as follows (in thousands):



|                          |  |   |      
|------------------------- |  | - | -----
|2005 (remaining 9 months) |  | $ | 1,373
|2006                      |  |   | 1,797
|2007                      |  |   | 1,609
|2008                      |  |   | 1,227
|2009                      |  |   | 318  
|Thereafter                |  |   | 132  
|                          |  |   |      
|                          |  | $ | 6,456
|                          |  |   |      



|Note 4: | Goodwill
|------- | --------



There were no changes in the carrying amount of goodwill during the three-month period ended March 31, 2005.



|Note 5: | Inventories
|------- | -----------



Inventories are stated at the lower of standard cost, which approximates actual (first-in, first-out method) or market (estimated net realizable value).



The Company plans production based on orders received and forecasted demand and must order wafers and raw material components and build
inventories well in advance of product shipments. The valuation of inventories at the lower of cost or market requires the use of estimates regarding the amounts of current inventories that will be sold. These estimates are dependent on the
Companys assessment of current and expected orders from its customers, including consideration that orders are subject to cancellation with limited advance notice prior to shipment. Because the Companys markets are volatile, and are
subject to technological risks and price changes as well as inventory reduction programs by the Companys customers and distributors, there is a risk that the Company will forecast incorrectly and produce excess inventories of particular
products. This inventory risk is compounded because many of the Companys customers place orders with short lead times. As a result, actual demand will differ from forecasts, and such a difference has in the past and may in the future have a
material adverse effect on actual results of operations.



The Company sold
previously written-down inventory products with an original cost basis of approximately $65,000 and $273,000 in the first quarters of 2005 and 2004, respectively. As the cost basis for written-down inventories is less than the original cost basis
when such products are sold, cost of revenues associated with the sale will be lower, which results in a higher gross margin on that sale. Sales of previously written-down inventories increased the Companys gross margin for the three months
ended March 31, 2005 by less than one percentage point. The Company may sell previously written-down inventory products in future periods, which would have a similarly positive impact on the Companys results of operations.



The components of inventories, net of written-down inventories and reserves, are as follows
(in thousands):



|                |  |               |       |                  |   |      
|--------------- |  | ------------- | ----- | ---------------- | - | -----
|                |  | March 31,2005 |       | December 31,2004
|Raw materials   |  | $             | 4,090 |                  | $ | 4,756
|Work-in-process |  |               | 1,938 |                  |   | 1,474
|Finished goods  |  |               | 2,651 |                  |   | 2,266
|                |  |               |       |                  |   |      
|                |  | $             | 8,679 |                  | $ | 8,496
|                |  |               |       |                  |   |      



6



---

##### Table of Contents

|Note 6: | Investment in GCS
|------- | -----------------



The Company accounts for its investment in GCS under the cost method of accounting and has classified the investment as a non-current asset on its consolidated balance sheet.



The Company regularly evaluates its investment in GCS to determine if an other than temporary
decline in value has occurred. Factors that may cause an other than temporary decline in the value of the Companys investment in GCS would include, but not be limited to, a degradation of the general business environment in which GCS operates,
the failure of GCS to achieve certain performance milestones, a series of operating losses in excess of GCS current business plan, the inability of GCS to continue as a going concern or a reduced valuation as determined by a new financing
event. There is no public market for securities of GCS, and the factors mentioned above require management to make significant judgments about the fair value of the GCS securities.



In the fourth quarters of 2004 and 2002, the Company determined that an other than temporary decline in value of its investment had
occurred. Accordingly, the Company recorded a charge of approximately $1.5 million in 2004 and $2.9 million in 2002 to reduce the carrying value of its investment to its estimated fair value. The fair value has been estimated by management and may
not be reflective of the value in a third party financing event.



The ultimate
realization of the Companys investment in GCS will be dependent on the occurrence of a liquidity event for GCS, and/or our ability to sell our GCS shares, for which there is currently no public market. The likelihood of any of these events
occurring will depend on, among other things, the market conditions surrounding the wireless communications industry and the related semiconductor foundry industry, as well as the public markets receptivity to liquidity events such as initial
public offerings or merger and acquisition activities. Even if the Company is able to sell its GCS shares, the sale price may be less than carrying value of the investment, which could have a material adverse effect on the Companys
consolidated results of operations.



|Note 7: | Restructuring Activities
|------- | ------------------------



Acquisition-Related Restructuring Costs Capitalized in 2004 as a Cost of Acquisition



During the fourth quarter of 2004, in connection with the acquisition of ISG, the Companys management approved and initiated plans to
restructure the operations of the ISG organization. The Company recorded $310,000 to eliminate duplicative ISG facilities and for ISG employee termination costs. These costs were recognized as a liability assumed in the business combination and
included in the allocation of the cost to acquire ISG and, accordingly, have been included as an increase to goodwill.



Of the restructuring cost, $61,000 related to severance and fringe benefits associated with the termination of four employees. Of the four terminations, two were engaged
in manufacturing activities, one was engaged in sales and marketing activities and one was engaged in general and administrative activities. All of the terminated employees were from the United States. The terminations were concluded in the fourth
quarter of 2004. Approximately $55,000 of the severance and fringe benefits was paid in the fourth quarter of 2004 and an additional $4,000 was paid in the first quarter of 2005. The remaining cash expenditures related to the severance and fringe
benefits are expected to be paid in the second quarter of 2005.



An additional
$37,000 of the restructuring cost relates to severance and fringe benefits or relocation costs for two employees. These employees will either be terminated or relocated to the Companys Broomfield, Colorado facility. One of these employees is
engaged in manufacturing activities and the other employee is engaged in general and administrative activities. Both of these employees reside in the United States. The severance and fringe benefits or relocation costs are expected to be paid in the
second quarter of 2005. In the event these employees are terminated, they are not required to render service until their respective termination dates in order to receive any termination benefits.



Of the restructuring cost, $212,000 related to costs of exiting duplicative facilities
primarily related to noncancelable lease costs. The Company estimated the cost of duplicative facilities based on the contractual terms of its noncancelable lease agreement. Given the short duration of the remaining contractual lease term that
expires in May of 2005, the Company assumed that the exited facility would not be subleased.



At each balance sheet date, the Company evaluates its restructuring accrual for appropriateness.



The following table summarizes the activities related to the Companys accrued restructuring balance during the first quarter of 2005 (in thousands):



|                                                  |  |                                                |     |              |   |      |                                             |  |   |    
|------------------------------------------------- |  | ---------------------------------------------- | --- | ------------ | - | ---- | ------------------------------------------- |  | - | ---
|                                                  |  | AccruedRestructuringBalance atDecember 31,2004 |     | CashPayments |   |      | AccruedRestructuringBalance atMarch 31,2005
|2004 acquisition-related restructuring activities |  | $                                              | 255 |              | $ | (165 | )                                           |  | $ | 90 
|2002 acquisition-related restructuring activities |  |                                                | 16  |              |   | (16  | )                                           |  |   |   
|2002 restructuring activities                     |  |                                                | 90  |              |   | (22  | )                                           |  |   | 68 
|2001 restructuring activities                     |  |                                                | 157 |              |   | (26  | )                                           |  |   | 131
|                                                  |  |                                                |     |              |   |      |                                             |  |   |    
|                                                  |  | $                                              | 518 |              | $ | (229 | )                                           |  | $ | 289
|                                                  |  |                                                |     |              |   |      |                                             |  |   |    



7



---

##### Table of Contents

The following table summarizes the Companys restructuring costs and activities for the restructuring activities
identified below from inception through March 31, 2005 (in thousands):



|                                                  |  |                                            |     |                  |   |           |                  |   |                  |                                                |  |           |        |   |                  |   |     |           |  |                  |      |   |  |   |    |  |   |    
|------------------------------------------------- |  | ------------------------------------------ | --- | ---------------- | - | --------- | ---------------- | - | ---------------- | ---------------------------------------------- |  | --------- | ------ | - | ---------------- | - | --- | --------- |  | ---------------- | ---- | - |  | - | -- |  | - | ---
|                                                  |  | Amount Charged toRestructuring or Goodwill |     | Cash Payments    |   |           | Non-cash Charges |   |                  | Accrued RestructuringBalance at March 31, 2005
|                                                  |  | Severance                                  |     | LeaseCommitments |   | Severance |                  |   | LeaseCommitments |                                                |  | Severance |        |   | LeaseCommitments |   |     | Severance |  | LeaseCommitments
|2004 acquisition-related restructuring activities |  | $                                          | 98  |                  | $ | 212       |                  | $ | (59              | )                                              |  | $         | (161   | ) |                  | $ |    |           |  | $                |     |   |  | $ | 39 |  | $ | 51 
|2002 acquisition-related restructuring activities |  |                                            | 28  |                  |   | 365       |                  |   | (28              | )                                              |  |           | (243   | ) |                  |   |    |           |  |                  | (122 | ) |  |   |   |  |   |   
|2002 restructuring activities                     |  |                                            | 120 |                  |   | 271       |                  |   | (120             | )                                              |  |           | (203   | ) |                  |   |    |           |  |                  |     |   |  |   |   |  |   | 68 
|2001 restructuring activities                     |  |                                            | 481 |                  |   | 2,189     |                  |   | (464             | )                                              |  |           | (1,269 | ) |                  |   | (17 | )         |  |                  | (789 | ) |  |   |   |  |   | 131
|                                                  |  |                                            |     |                  |   |           |                  |   |                  |                                                |  |           |        |   |                  |   |     |           |  |                  |      |   |  |   |    |  |   |    
|                                                  |  | $                                          | 727 |                  | $ | 3,037     |                  | $ | (671             | )                                              |  | $         | (1,876 | ) |                  | $ | (17 | )         |  | $                | (911 | ) |  | $ | 39 |  | $ | 250
|                                                  |  |                                            |     |                  |   |           |                  |   |                  |                                                |  |           |        |   |                  |   |     |           |  |                  |      |   |  |   |    |  |   |    



The remaining cash expenditures
related to the noncancelable lease commitments are expected to be paid over the respective lease terms, the latest of which ends in 2006.



|Note 8: | Net Income (Loss) Per Share
|------- | ---------------------------



The Company computes basic net income (loss) per share by dividing the net income (loss) for the period by the weighted average number of shares of common stock
outstanding during the period. Diluted net income (loss) per share is computed by dividing the net income (loss) for the period by the weighted average number of shares of common stock and potential common stock equivalents outstanding during the
period, if dilutive. Potential common stock equivalents include incremental shares of common stock issuable upon the exercise of stock options and employee stock awards.



The shares used in the computation of the Companys basic and diluted net income (loss) per common share were as follows (in
thousands):



|                                                              |  |                    |  |              
|------------------------------------------------------------- |  | ------------------ |  | -------------
|                                                              |  | Three Months Ended
|                                                              |  | March 31,2005      |  | March 31,2004
|Weighted average common shares outstanding                    |  | 35,463             |  | 34,197       
|Dilutive effect of employee stock options and awards          |  |                   |  | 3,093        
|                                                              |  |                    |  |              
|Weighted average common shares outstanding, assuming dilution |  | 35,463             |  | 37,290       
|                                                              |  |                    |  |              



Weighted average common shares
outstanding, assuming dilution, include the incremental shares that would be issued upon the assumed exercise of stock options and employee stock awards.



The effect of options to purchase 5,329,236 shares of common stock at an average exercise price of $2.68 for the first quarter ended March 31, 2005 have not been included
in the computation of diluted net loss per share as the effect would have been antidilutive. In addition, 50,000 shares of non-vested common stock at a purchase price of $0.001 have not been included in the computation of diluted net loss per share
as the effect would have been antidilutive.



8



---

##### Table of Contents

|Note 9: | Comprehensive Income (Loss)
|------- | ---------------------------



The components of comprehensive income (loss), net of tax, were as follows (in thousands):



|                                                                |  |                    |        |   |               |   |    
|--------------------------------------------------------------- |  | ------------------ | ------ | - | ------------- | - | ---
|                                                                |  | Three Months Ended
|                                                                |  | March 31,2005      |        |   | March 31,2004
|Net income (loss)                                               |  | $                  | (1,843 | ) |               | $ | 162
|Change in net unrealized loss on available-for-sale investments |  |                    | (54    | ) |               |   |   
|                                                                |  |                    |        |   |               |   |    
|Total comprehensive income (loss)                               |  | $                  | (1,897 | ) |               | $ | 162
|                                                                |  |                    |        |   |               |   |    



The components of accumulated other
comprehensive income (loss), net of tax, were as follows (in thousands):



|                                                                  |  |               |      |   |                  |   |     |  
|----------------------------------------------------------------- |  | ------------- | ---- | - | ---------------- | - | --- | -
|                                                                  |  | March 31,2005 |      |   | December 31,2004 |  
|Accumulated net unrealized loss on available-for-sale investments |  | $             | (107 | ) |                  | $ | (53 | )
|                                                                  |  |               |      |   |                  |   |     |  
|Total accumulated other comprehensive loss                        |  | $             | (107 | ) |                  | $ | (53 | )
|                                                                  |  |               |      |   |                  |   |     |  



|Note 10: | Segments of an Enterprise and Related Information
|-------- | -------------------------------------------------



At the beginning of 2005, the Company reorganized into two, product focused business segments, the Amplifier division and the Signal Source division and one market
oriented segment, the Aerospace and Defense (A&D) division. The Amplifier divisions main product lines are primarily IC-based and include discrete, amplifier, low noise amplifier, power amplifier and transceiver IC products, a
multi-component module (MCM) product line including power amplifier modules and a broadband product line. The Signal Source divisions main product lines are primarily MCMs used in mobile wireless infrastructure applications to generate and
control RF signals, including VCOs, PLLs, coaxial resonator oscillators (CROs), and passive and active mixers. In addition, the Signal Source division has an IC-based modulator and demodulator product line and a line of signal couplers. The A&D
divisions main product lines are government and military specified versions of certain of our signal processing components and various passive components. The Companys reportable segments are organized as separate functional units with
separate management teams and separate performance assessment. The Companys chief operating decision maker (CODM), who is the Chief Executive Officer of the Company, evaluates performance and allocates resources based on the operating income
(loss) of each segment.



The accounting policies of each segment are the same
as those described in Note 1: Organization and Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements as reflected in the Companys Annual Report on Form 10-K filed with the SEC on March 3, 2005. There are
no intersegment sales. Non-segment items include certain corporate manufacturing expenses, advanced research and development expenses, certain sales expenses, certain general and administrative expenses, amortization of deferred stock compensation,
amortization of acquisition related intangible assets, acquired in-process research and development charges, restructuring, GCS impairment charges, interest income and other, net, interest expense, and the provision for (benefit from) income taxes,
as the aforementioned items are not allocated for purposes of the CODMs reportable segment review. Assets and liabilities are not discretely reviewed by the CODM.



|                                          |  |                   |       |                      |   |             |  |   |               |   |                  |   |        |              |   |        |   |  |   |        |  
|----------------------------------------- |  | ----------------- | ----- | -------------------- | - | ----------- |  | - | ------------- | - | ---------------- | - | ------ | ------------ | - | ------ | - |  | - | ------ | -
|                                          |  | AmplifierDivision |       | SignalSourceDivision |   | A&DDivision |  |   | TotalSegments |   | Non-SegmentItems |   |        | TotalCompany |  
|                                          |  | (in thousands)    |      
|For the three months ended March 31, 2005 |  |                   |       |                      |   |             |  |   |               |   |                  |   |        |              |   |        |   |  |   |        |  
|Net revenues from external customers      |  | $                 | 5,903 |                      | $ | 5,538       |  | $ | 726           |   |                  | $ | 12,167 |              |   |       |   |  | $ | 12,167 |  
|Operating income (loss)                   |  | $                 | 722   |                      | $ | 1,618       |  | $ | (104          | ) |                  | $ | 2,236  |              | $ | (4,217 | ) |  | $ | (1,981 | )
|For the three months ended March 31, 2004 |  |                   |       |                      |   |             |  |   |               |   |                  |   |        |              |   |        |   |  |   |        |  
|Net revenues from external customers      |  | $                 | 6,346 |                      | $ | 6,831       |  | $ | 624           |   |                  | $ | 13,801 |              |   |       |   |  | $ | 13,801 |  
|Operating income (loss)                   |  | $                 | 2,424 |                      | $ | 1,531       |  | $ | 79            |   |                  | $ | 4,034  |              | $ | (3,899 | ) |  | $ | 135    |  



9



---

##### Table of Contents

The segment information above has been restated to reflect the change in the number the Companys segments from two
to three in the first quarter of 2005. Prior to this reorganization, the revenues and operating income (loss) attributable to our A&D products were primarily included in the revenues and operating income (loss) attributable to our Signal Source
division.



|Note 11: | Contingencies
|-------- | -------------



In November 2001, the Company, various of its officers and certain underwriters of the Companys initial public offering of securities were named in a purported class action lawsuit filed in the United States
District Court for the Southern District of New York. The suit,In re Sirenza Microdevices, Inc. Initial Public Offering Securities Litigation, Case No. 01-CV- 10596, alleges improper and undisclosed activities related to the allocation of
shares in the Companys initial public offering, including obtaining commitments from investors to purchase shares in the aftermarket at pre-arranged prices. Similar lawsuits concerning more than 300 other companies initial public
offerings were filed during 2001, and this lawsuit is being coordinated with those actions (the coordinated litigation). Plaintiffs filed an amended complaint on or about April 19, 2002, bringing claims for violation of several
provisions of the federal securities laws and seeking an unspecified amount of damages. On or about July 1, 2002, an omnibus motion to dismiss was filed in the coordinated litigation on behalf of the issuer defendants, of which the Company and its
named officers and directors are a part, on common pleadings issues. On October 8, 2002, pursuant to stipulation by the parties, the court dismissed the officer and director defendants from the action without prejudice. On February 19, 2003, the
court granted in part and denied in part a motion to dismiss filed on behalf of defendants, including the Company. The courts order dismissed all claims against the Company except for a claim brought under Section 11 of the Securities Act of
1933.



In June 2004, a stipulation of settlement and release of claims against
the issuer defendants, including the Company, was submitted to the court for approval. The terms of the settlement, if approved, would dismiss and release all claims against the participating defendants (including the Company). In exchange for this
dismissal, D&O insurance carriers would agree to guarantee a recovery by the plaintiffs from the underwriter defendants of at least $1 billion, and the issuer defendants would agree to an assignment or surrender to the plaintiffs of certain
claims the issuer defendants may have against the underwriters. The settlement is subject to a number of conditions, including court approval. If the settlement does not occur, and litigation against the Company continues, the Company believes it
has meritorious defenses and intends to defend the case vigorously. In addition, the Company does not believe the ultimate outcome will have a material adverse impact on the Companys results of operations or financial condition.



On April 16, 2003, Scientific Components Corporation d/b/a Mini-Circuits Laboratory
(Mini-Circuits) filed a complaint against the Company in the United States District Court for the Eastern District of New York alleging, among other things, breach of warranty by the Company for alleged defects in certain goods sold to
Mini-Circuits. Mini-Circuits seeks compensatory damages plus interest, costs and attorneys fees. On July 30, 2003, the Company filed an answer to the complaint and asserted counterclaims against Mini-Circuits. Even though the Company believes
Mini-circuits claims to be without merit and intends to defend the case and assert its claims vigorously, if the Company ultimately loses or settles the case, it may be liable for monetary damages and other costs of litigation. An estimate as
to the possible loss or range of loss in the event of an unfavorable outcome cannot be made as of March 31, 2005. Even if the Company is entirely successful in the lawsuit, the Company may incur significant legal expenses and the Companys
management may expend significant time in the defense.



On August 11, 2003,
OneSource Financial Corp. filed a complaint against the Company and John and Susan Ocampo in the District Court for Travis County, Texas. The Company was served with the complaint on September 15, 2003 and filed its answer on October 16, 2003. The
complaint alleges breach of contract by the Company and breach of guaranty by John and Susan Ocampo with respect to an equipment lease entered into in 1999. OneSource alleges that the terms of the lease provided for an automatic renewal of the lease
upon expiration of the original term in April 2003 and seeks additional monthly rental payments on the equipment in addition to a fair market value buyout of the equipment, accrued interest, liquidated damages and attorneys fees. The Company
believes OneSources claims for breach of contract to be without merit and intends to defend the case vigorously. However, if the Company ultimately loses or settles the case, the Company may be liable for the amounts claimed by OneSource and
other costs of litigation. The Company has estimated the range of loss in the event of an unfavorable outcome of the matter of up to $400,000. Even if the Company is entirely successful in the lawsuit, the Company may incur significant legal
expenses and the Companys management may expend significant time in the defense.



|Note 12: | Recent Accounting Pronouncements
|-------- | --------------------------------



In December 2004, the FASB issued SFAS No. 123 (revised 2004), Share-Based Payment (SFAS 123R), which replaces SFAS No. 123, Accounting for
Stock-Based Compensation, (SFAS 123) and supersedes APB Opinion No. 25, Accounting for Stock Issued to Employees. SFAS 123R requires all share-based payments to employees, including grants of employee stock options, to
be recognized in the financial statements based on their fair values beginning with the first period of the next fiscal year beginning after June 15, 2005. The pro forma disclosures previously permitted under SFAS 123 no longer will be an
alternative to financial statement recognition. The Company is required to adopt SFAS 123R in the first quarter of 2006, beginning January 1, 2006. Under SFAS 123R, the Company must determine the appropriate fair value model to be used for valuing
share-based payments, the amortization method for compensation cost and the transition method to be used at the date of adoption. The transition methods include modified prospective and modified retrospective adoption options. Under the modified
retrospective option, prior periods may be restated either as of the beginning of the year of adoption or for all periods presented. The modified prospective method requires that compensation expense be recorded for all unvested stock options and
restricted stock at the beginning of the first quarter of adoption of SFAS 123R, while the modified retrospective methods would record compensation expense for all unvested stock options and restricted stock beginning with the first period restated.
The Company is evaluating the requirements of SFAS 123R and expects that the adoption of SFAS 123R will have a material adverse impact on the Companys consolidated results of operations and earnings per share. The Company has not yet
determined the method of adoption or the effect of adopting SFAS 123R.



|Item 2. | Managements Discussion and Analysis of Financial Condition and Results of Operations
|------- | -------------------------------------------------------------------------------------



Certain statements contained in this Managements Discussion and Analysis of Financial
Condition and Results of Operations (MD&A), and in particular under the heading Business Outlook below, and elsewhere in this report are forward-looking statements that involve risks and uncertainties. These statements relate to
future events or our future financial performance. In some cases, forward-looking statements can be identified by terminology such as may, will, should, expect, anticipate,
intend, plan, believe, estimate, potential, or continue, the negative of these terms or other comparable terminology. These statements involve a number of risks and
uncertainties. Actual events or results may differ materially from any forward-looking statement as a result of various factors, including those described below under Risk Factors.



10



---

##### Table of Contents

We begin MD&A with a discussion of Sirenzas overall strategy to give the reader an overview of the goals of our
business and the direction in which our business and products are moving, followed by an overview of the critical factors that affect our net revenues, cost of revenues and operating expenses. This is followed by a discussion of the critical
accounting policies and estimates that we believe require the most significant judgments to be made in the preparation of our consolidated financial statements. In the next section we discuss the results of our operations for the first quarter of
2005 compared to the first quarter of 2004. We then provide an analysis of our cash flows, including the impact on cash of important balance sheet changes, and discuss our financial commitments in the sections entitled Liquidity and Capital
Resources and Contractual Obligations.



Company Overview



We are a leading designer and an ISO 9001:2000 and ISO 14001:2004
certified supplier of high performance RF components for the commercial communications and A&D equipment markets. Our products are designed to optimize the reception and transmission of voice and data signals in mobile wireless communications
networks and in other wireless and wireline applications. Our commercial communications applications include components for mobile wireless infrastructure applications, wireless LANs, fixed wireless networks, broadband wireline applications such as
coaxial cable and fiber optic networks, cable television set-top boxes, RFID readers, wireless video transmitters, antennae and receivers for satellite radio, as well as tuner ICs and transceivers for HDTV set-top boxes. Sales of components for the
A&D end markets include components for government, military, avionics, space and homeland security systems.



We believe a fundamental value we provide to our customers is derived from our focus on the needs of customer specific applications, our wide array of highly engineered
products in multiple technologies, and our commitment to support our customers worldwide with sales and application engineering support.



We offer a broad line of products that range in complexity from discrete components to ICs and MCMs. Our discrete, IC and MCM products employ numerous semiconductor
process technologies, which we believe allows us to optimize our products for our customers applications.



Our net revenues have increased in each of 2002, 2003 and 2004, driven by new product introductions, increased market share and the addition of complementary products
through our strategic acquisitions of other companies and assets.



We have made
three acquisitions since 2002. On December 16, 2004, we acquired ISG, a designer of RF gateway module and IC products for the cable TV, satellite radio and HDTV markets. This acquisition enables us to address new end markets, including HDTV and
satellite radio, and broadens our product offering in the set-top box market by adding ISGs silicon-based receiver/tuner products to our existing product lines targeting this market. We have had limited sales of these products to date.



On May 5, 2003, we acquired substantially all of the assets and assumed
specified liabilities of Vari-L Company, Inc., a designer and manufacturer of VCOs, PLLs and other MCM products for the mobile wireless infrastructure market, as well as certain components for the A&D market. This acquisition strengthened our
product portfolio by adding RF signal source components while strengthening our presence in the A&D markets. The acquisition of Vari-L added a significant amount of net revenues to Sirenza subsequent to the date of the transaction. After the
acquisition of Vari-L, we relocated our corporate headquarters and consolidated our manufacturing facilities in Broomfield, Colorado, which allowed us to achieve significant operational cost synergies, primarily in operations, general and
administrative and, to a more limited degree, in sales and marketing.



On
September 11, 2002, we acquired Xemod Incorporated, a designer and fabless manufacturer of RF power amplifier modules and components based on patented LDMOS technology. The acquisition strengthened our product portfolio of RF components by adding
high power amplifier module products. We have not had significant sales of these products to date.



Historically we have utilized a divisional organization structure focused on either specific end markets and/or product types. Beginning in January of 2005, we reorganized to operate in two, product focused divisions
and one market oriented division: our Amplifier division, our Signal Source division and our A&D division. The Amplifier and Signal Source divisions are generally focused on similar end markets and customers and are managed separately in order
to better manage the research and development and marketing efforts for particular products. The A&D division is focused on the government, military, avionics, space and homeland security systems end markets. The Amplifier divisions main
product lines are primarily IC-based and include discrete, amplifier, low noise amplifier, power amplifier and transceiver IC products, an MCM product line including power amplifier modules and our broadband product line. The Signal Source
divisions main product lines are MCMs used in mobile wireless infrastructure applications to generate and control RF signals, including VCOs, PLLs, coaxial resonator oscillators (CROs), passive and active mixers, an IC-based modulator and
demodulator product line and a line of signal couplers. The A&D divisions main product lines are government and military specified versions of certain of our signal processing components and various passive components.



Revenue Overview



We present our revenue results as net revenues. Net revenues are defined as our revenues less sales discounts, rebates, returns
and other pricing adjustments. Historically, these revenue-related adjustments have not represented a significant percentage of our revenues.



We sell our products worldwide through a direct sales channel and a distribution sales channel. We recognize revenues on sales to our distributors under agreements
providing for rights of return and pricing discount programs at the time our products are sold by the distributors to third party customers. Our distribution channel, which accounted for 11% of total net revenues for the first quarter of 2005,
consists of those sales made by our four distribution channel partners (Avnet, Acal, Nu Horizons, and RFMW) under agreements that provide for rights of return and pricing discounts.



Sales to Avnet and Acal as resellers, and to other resellers of our products, are made on contractual terms that do not include rights of
return and pricing discounts. We recognize revenue from sales to these resellers of our products, and from sales to all other non-distribution customers, at the time product has shipped, title has transferred and no obligations remain. Our direct
sales channel, which accounted for 89% of total net revenues for the first quarter of 2005, consists of those sales made to all non-distributor customers and resellers of our products, including sales to Avnet and Acal as resellers.



Although we have typically not experienced a delay in customer acceptance of our products,
should a customer delay acceptance in the future, our policy is to delay revenue recognition until a customer accepts the products.



Historically, a significant percentage of our net revenues have been derived from a limited number of customers, including our distributors. From 2002 to the first
quarter of 2005, our customer base shifted significantly as a result of our focus on strengthening our direct sales channel. Our sales and marketing efforts contributed to a majority of our 2003 and 2004 net revenues being derived from a specific
set of large wireless infrastructure original equipment manufacturers including (OEMs) Andrew, Ericsson, Lucent and their contract manufacturers (CMs). This trend was strengthened in 2003 by the acquisition of Vari-L whose customers were also large
infrastructure OEMs, including Nokia, Siemens and Motorola. We believe that these and other global OEMs and their CMs will continue to account for a majority of our net revenues for the foreseeable future.



11



---

##### Table of Contents

We have grown our net revenues through the introduction of new products, increasing our market share and adding
complementary products through strategic acquisitions. Our strategy is to continue to grow our net revenues by the same means.



In addition to these strategies, we continue to focus on growing sales to customers in other wireless, wireline and A&D end-markets, through both our direct and
distribution channels.



As we exited 2003, our net revenues were evenly split
between Asia, North America and Europe. Sales into Asia increased during 2004 and in the first quarter of 2005 as a result of OEMs increasingly outsourcing their manufacturing to contract manufacturers, primarily in China. As a result of the
increase in shipments to our OEMs contract manufacturers, we anticipate that a higher percentage of our sales will be in the Asia region.



With respect to products sold in our Amplifier division, we compete primarily with other suppliers of high-performance RF components used in communications infrastructure
equipment, such as Agilent, M/A-COM, NEC and WJ Communications. For our broadband products, we expect our most significant competitors will include Maxim Integrated Products, Microtune, Motorola and Philips. With respect to our Signal Source
division products, our primary competitors are Alps, M/A-COM and Minicircuits. With respect to our A&D division products, our primary competitors are Hittite, Synergy, Remec and Cougar Components. We also compete with communications equipment
manufacturers, some of whom are our customers that design RF components internally, such as Ericsson, Lucent, Motorola, Nokia and Nortel Networks.



Since 2002, our OEM customers have been increasingly outsourcing the manufacturing of their equipment to CMs, including Celestica, Flextronics, Sanmina and Solectron. As
a result, we sell directly to both OEMs and CMs. Currently, our OEM customers make the sourcing decisions for our sales to CMs. When we report customer net revenues in our public announcements, we attribute all net revenues to the ultimate OEM
customer and not the respective CMs.



Cost of Revenues Overview



Cost of revenues consists primarily of costs associated with:



| | 1. | Wafers from third-party wafer fabs for our IC products;
| | -- | -------------------------------------------------------



| | 2. | Raw material components from third-party vendors, for both our IC and MCM products;
| | -- | -----------------------------------------------------------------------------------



| | 3. | Packaging for our IC products performed by third-party vendors;
| | -- | ---------------------------------------------------------------



| | 4. | Assembling and testing of our MCM products in our facility;
| | -- | -----------------------------------------------------------



| | 5. | Testing of our IC products in our facility; and
| | -- | -----------------------------------------------



| | 6. | Costs associated with procurement, production control, quality assurance, reliability and manufacturing engineering.
| | -- | --------------------------------------------------------------------------------------------------------------------



For our IC products, we outsource our wafer manufacturing and packaging and then perform a
significant majority of our final testing and tape and reel assembly at our Colorado manufacturing facility. For our MCMs, we manufacture, assemble and test most of our products at our manufacturing facility in Colorado.



Historically, we have relied upon a limited number of foundries to manufacture most of our
semiconductor wafers for our IC products. We have contractual agreements with most, but not all, of these suppliers in which pricing is established based on volume, and in which price, volume and other terms are reset on a periodic basis through
negotiations between the parties based on current market conditions. We source our IC packaging assembly from a limited number of established, international commercial vendors. We anticipate that we will continue to depend on a limited number of
vendors for our wafer and packaging requirements.



Generally, raw materials
utilized by us for our MCM products are readily available from numerous sources. These vendors are competitive and we expect that to the extent our volumes increase, we may be able to reduce costs by obtaining better volume pricing and delivery
terms.



We currently outsource a portion of our manufacturing and testing
function, and may increasingly do so where economically viable for both the vendor and us.



Gross Profit and Margin Overview



Our
gross profit and gross margin percent can be influenced by a number of factors, including, but not limited to:



1. Product features



Historically, customers have been willing to pay a premium for new or different features or functionality. Therefore, increased sales of such products in a given period
are likely to have a positive effect on our gross margin percent.



12



---

##### Table of Contents

2. Product type



In the markets in which we operate, IC products have historically yielded a higher gross margin percent than MCMs. Therefore, increased
sales of IC products in a given period will have a positive effect on our gross margin percent.



3. Market



Our products are sold into a wide variety of markets and each of these markets has a pricing structure that is dictated by the economics of that particular market.
Therefore, the gross margin percent on our products can vary by the markets into which they are sold. Therefore, increased sales into higher margin markets in a given period will have a positive effect on our gross margin percent.



4. Sales channel



Historically, the gross margin percent on sales to our large OEM customers has been lower
than the gross margin percent on sales through our distribution channel or sales to some of our smaller direct customers. This is primarily due to the bargaining power attendant to large OEM customers based on their higher product volumes.
Therefore, increased sales to our large OEM customers in a given period may have a negative effect on our gross margin percent.



5. Level of integration of the product



Our customers generally seek more integrated products with enhanced functionality, which enables them to procure fewer products from fewer suppliers. These integrated
products typically command a higher average selling price than our stand-alone components. However, the manufacturing costs of these integrated products are higher, which generally results in a lower gross margin percent on initial sales of our
integrated products in comparison to our stand-alone components. Therefore, increased sales of our more integrated products in a given period will generally have a positive impact on our average selling prices and a negative effect on our gross
margin percent.



6. The efficiency and
effectiveness of our manufacturing operations



Our gross margin percent is
generally lower in periods with less volume and higher in periods with increased volume. In periods in which volumes are low, our fixed manufacturing overhead costs are allocated to fewer units, thereby negatively impacting our gross margin percent
when those products are sold. Likewise, in periods in which volumes are high, our fixed manufacturing overhead costs are allocated to more units, thereby positively impacting gross margin percent when those products are sold.



7. Provision for excess inventories



As discussed in more detail in Critical Accounting Policies and Estimates, our
cost of revenues and gross margin percent may be negatively influenced by provisions for excess inventories and positively influenced by the sale of previously written-down inventory. These actions can have material impacts on cost of revenues,
gross profit and gross margin percent.



We believe that each of the above
factors will continue to affect our cost of revenues, gross profit and gross margin percentage for the foreseeable future. In addition, the interaction of the factors listed above could have a significant period-to-period effect on our cost of
revenues, gross profit and gross margin percent.



Operating Expense Overview



Research and development expenses consist primarily of salaries
and salary-related expenses for personnel engaged in R&D activities, material costs for prototype and test units and other expenses related to the design, development and testing of our products and, to a lesser extent, fees paid to consultants
and outside service providers. We expense all of our R&D costs as they are incurred. Our R&D costs can vary significantly from quarter to quarter depending on the timing and quantities of materials bought for prototype and test units. We
believe one of our key competitive advantages is our ability to offer a broad range of highly engineered products designed to meet the needs of our customers. Our strategy is to continue to invest in R&D at levels appropriate for our overall
operating plan in order to maintain our competitive advantage.



We historically
have performed our R&D activities in multiple, geographically dispersed locations in North America. We believe maintaining multiple R&D design centers allows us to attract key personnel we might not otherwise be able to hire. In addition, we
believe that having stand-alone R&D centers allows the personnel there to better concentrate on their development tasks. We plan to continue our strategy of conducting our R&D activities in multiple locations.



Sales and marketing expenses consist primarily of salaries, commissions and
salary-related expenses for personnel engaged in marketing, sales and application engineering functions, as well as costs associated with trade shows, promotional activities, advertising and public relations. We record as an expense commissions to
our external, independent sales representatives when revenues from the associated sale are recognized. We record as an expense quarterly commissions to internal sales employees based on the achievement of targeted net revenue and sales-related
goals.



We continue to invest in increasing the number of direct sales
personnel and application engineers supporting our customers. In particular, to support our customers, we placed both sales personnel and application engineers in various time zones around the world. We believe that our direct sales force and
application engineers provide us with a key competitive advantage in our markets. We intend to maintain our investment in sales and marketing functions in order to sustain our advantage in this area.



General and administrative expenses consist primarily of salaries and salary-related
expenses for executive, finance, accounting, information technology, and human resources personnel, as well as insurance and professional fees. We intend to invest in general and administrative expenses at levels appropriate for our overall
operating plan.



Critical Accounting Policies and Estimates



The discussion and analysis of our financial condition and results of operations are
based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments
that affect the reported amounts of assets, liabilities, revenue, expenses and related disclosures. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the
results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. We evaluate these estimates on an ongoing basis. Actual results may differ from these
estimates under different assumptions or conditions.



13



---

##### Table of Contents

Management believes the following critical accounting policies require the most significant judgments and estimates to be
made in the preparation of our consolidated financial statements. We also have other policies that we consider key accounting policies, such as our policies for revenue recognition, in particular the deferral of revenue on sales to distributors, and
of the valuation of long-lived assets including acquisition-related intangible assets. However, we do not believe these policies currently meet the definition of critical accounting estimates, because they do not generally require us to make
estimates or judgments that are difficult or subjective.



Non-Marketable
Equity Securities: We regularly evaluate our investment in GCS to determine if an other-than-temporary decline in value has occurred. Factors that may cause an other-than-temporary decline in the value of our investment in GCS would include, but
not be limited to, a degradation of the general business environment in which GCS operates, the failure of GCS to achieve certain performance milestones, financial performance below that anticipated in GCS current annual business plan, the
inability of GCS to continue as a going concern or a reduced valuation as determined by a new financing event. Evaluating each of these factors involves a significant amount of judgment on managements part. If we determine that an
other-than-temporary decline in value has occurred, we will write down our investment in GCS to fair value. Such a write-down could have a material adverse impact on our consolidated results of operations in the period in which it occurs. For
example, in the fourth quarters of 2004 and 2002, we wrote down the value of our investment in GCS by $1.5 million and $2.9 million, respectively, after determining that GCS value had experienced an other-than-temporary decline.



The ultimate realization of our investment in GCS will be dependent on the occurrence of a
liquidity event for GCS, and/or our ability to sell our GCS shares, for which there is no public market. The likelihood of any of these events occurring will depend on, among other things, the market conditions surrounding the wireless
communications industry and the related semiconductor foundry industry, as well as the public markets receptivity to liquidity events such as initial public offerings or mergers and acquisition activities.



Valuation of Goodwill: Goodwill is initially recorded when the purchase price paid for
an acquisition exceeds the fair value of the net identifiable tangible and intangible assets acquired. We perform an annual review in the third quarter of each year, or more frequently if indicators of potential impairment exist, to determine if the
recorded goodwill is impaired. Our impairment review process compares the fair value of the reporting unit to its carrying value, including the goodwill related to that reporting unit.



Our fair value methodology consists of a forecasted discounted cash flow model and a market value model. The forecasted discounted cash flow
model uses estimates of revenue for the business unit, based on estimates of market segment growth rates, estimated costs, and an estimated appropriate discount rate. These estimates are based on historical data, various internal estimates, various
external market sources of information, and managements expectations of future trends.



Our market value model considers our market capitalization and market multiples of revenue for comparable companies in our industry, as determined by management. This information is derived from publicly available
sources.



All of these estimates, including the selection of comparable
publicly traded companies, involve a significant amount of judgment. If the fair value of the reporting unit exceeds the carrying value of the assets assigned to that unit, goodwill is not impaired and no further testing is performed. If the
carrying value of the assets assigned to the reporting unit exceeds the fair value of the reporting unit, the implied fair value of the reporting units goodwill must be determined and compared to the carrying value of the reporting units
goodwill. If the carrying value of a reporting units goodwill exceeds its implied fair value, then an impairment loss equal to the difference will be recorded.



Our expectations are that the most important factor in our estimation will be our ability to accurately forecast the demand for our
products.



We conducted our annual goodwill impairment analysis in the third
quarter of 2004. We concluded that we did not have any impairment of goodwill based on our forecasted discounted cash flows, our market capitalization and market multiples of revenue of comparable companies in our industry.



Excess and Obsolete Inventories: Our provision for excess inventories is based on
levels of inventory exceeding the forecasted demand of such products within specific time horizons. We forecast demand for specific products based on the number of products we expect to sell, with such assumptions dependent on our assessment of
market conditions and current and expected orders from our customers, considering that orders are subject to cancellation with limited advance notice prior to shipment. The estimation of future demand used in the valuation of inventory is the basis
for our announced revenue outlook and our factory loading factors. If forecasted demand decreases or if inventory levels increase disproportionately to forecasted demand, inventory write-downs may be required. Likewise, if we ultimately sell
inventories that were previously written-down, we would reduce the previously recorded excess inventory provisions which would have a positive impact on our cost of revenues, gross margin percent and operating results.



We recorded a provision for excess inventories of $7.8 million in 2001. We subsequently began
selling some of these written-down inventory products. In the first quarter of 2005, we sold previously written-down inventory products with an original cost basis of approximately $65,000. As the cost basis for written-down inventories is less than
the original cost basis when such products are sold, cost of revenues associated with the sale will be lower, which results in a higher gross margin on that sale. Sales of previously written-down inventories had a positive impact on our gross margin
in the first quarter of 2005 of less than one percentage point.



The following
table illustrates the impact on cost of revenues of additions to written-down inventories and sales of previously written-down inventory products for historical Sirenza Amplifier division products and also provides a schedule of the activity of
Sirenzas written-down inventories (in thousands):



|                             |  |                                                               |   |                                                                   |   |      |                                                          |  |   |                                         |   |  |   |      
|---------------------------- |  | ------------------------------------------------------------- | - | ----------------------------------------------------------------- | - | ---- | -------------------------------------------------------- |  | - | --------------------------------------- | - |  | - | -----
|Three Months Ended March 31, |  | Additions toWritten-DownInventoriesCharged toCost of Revenues |   | Sales ofWritten-DownInventorieswith No AssociatedCost of Revenues |   |      | Disposition ofWritten-DownInventories ViaScrap and Other |  |   | Written-DownInventories atEnd of Period
|2005                         |  | $                                                             |  |                                                                   | $ | (65  | )                                                        |  | $ | 33                                      |   |  | $ | 3,024
|2004                         |  | $                                                             |  |                                                                   | $ | (273 | )                                                        |  | $ | (144                                    | ) |  | $ | 3,690



The single largest factor affecting
the accuracy of our provisions for excess inventories will be the accuracy of our end customers forecasts. Affecting these forecasts will be demand for communications components in our market segments. Also impacting it will be the speed at
which our products are designed in or out of our customers products.



We
will ultimately dispose of written-down inventories by either selling such products or scrapping them. We currently expect sales of written-down inventory products in 2005 to be lower than in 2004. Similarly, we anticipate that we will scrap
additional written-down inventories in the near term.



14



---

##### Table of Contents

Deferred Tax Assets: We perform quarterly and annual assessments of the realization of our deferred tax assets
considering all available evidence, both positive and negative. Assessments of the realization of deferred tax assets require that management make significant judgments about many factors, including the amount and likelihood of future taxable
income. As a result of these assessments, we previously concluded that it was more likely than not that our deferred tax assets would not be realized and established a full valuation allowance against our deferred tax assets in 2001. The valuation
allowance established in 2001 was recorded as a result of our analysis of the facts and circumstances at that time, which led us to conclude that we could no longer forecast future U.S. taxable income under the more likely than not standard required
by SFAS No. 109 Accounting for Income Taxes.



Although we did not
have taxable income in the first quarter of 2005, in 2004, we had taxable income in every quarter. We continue to evaluate the need for a valuation allowance. To the extent we are able to generate taxable income for the remainder of 2005 and if our
projections indicate that we are likely to generate sufficient future taxable income, we may determine that some, or all, of our deferred tax assets will more likely than not be realized, in which case we will reduce our valuation allowance in the
quarter in which such determination is made. In the quarter in which the valuation allowance is reduced, we may recognize a benefit from income taxes on our income statement, which may have a positive impact on our consolidated results of
operations.



Results of Operations



The following table shows selected consolidated statement of operations data expressed as a
percentage of net revenues for the periods indicated:



|                                                                                      |  |                              |   |  |      |  
|------------------------------------------------------------------------------------- |  | ---------------------------- | - |  | ---- | -
|                                                                                      |  | Three Months Ended March 31, |  
|                                                                                      |  | 2005                         |   |  | 2004 |  
|Net revenues                                                                          |  | 100                          | % |  | 100  | %
|Total cost of revenues                                                                |  | 56                           | % |  | 54   | %
|                                                                                      |  |                              |   |  |      |  
|Gross profit                                                                          |  | 44                           | % |  | 46   | %
|Operating expenses:                                                                   |  |                              |   |  |      |  
|Research and development (exclusive of amortization of deferred stock compensation)   |  | 23                           | % |  | 15   | %
|Sales and marketing (exclusive of amortization of deferred stock compensation)        |  | 15                           | % |  | 14   | %
|General and administrative (exclusive of amortization of deferred stock compensation) |  | 18                           | % |  | 13   | %
|Amortization of deferred stock compensation                                           |  | 0                            | % |  | 0    | %
|Amortization of acquisition-related intangible assets                                 |  | 4                            | % |  | 3    | %
|                                                                                      |  |                              |   |  |      |  
|Total operating expenses                                                              |  | 60                           | % |  | 45   | %
|                                                                                      |  |                              |   |  |      |  
|Income (loss) from operations                                                         |  | -16                          | % |  | 1    | %
|Interest and other income (expense), net                                              |  | 0                            | % |  | 0    | %
|Provision for (benefit from) income taxes                                             |  | -1                           | % |  | 0    | %
|                                                                                      |  |                              |   |  |      |  
|Net income (loss)                                                                     |  | -15                          | % |  | 1    | %



15



---

##### Table of Contents

Comparisons of the Three Months Ended March 31, 2005 and March 31, 2004



Net Revenues



The following table sets forth information pertaining to our channel and geographic net revenue composition expressed as a percentage of net
revenues for the periods indicated:



|                 |  |                              |   |  |      |  
|---------------- |  | ---------------------------- | - |  | ---- | -
|                 |  | Three Months Ended March 31, |  
|                 |  | 2005                         |   |  | 2004 |  
|Direct (1)       |  | 89                           | % |  | 87   | %
|Distribution (2) |  | 11                           | % |  | 13   | %
|                 |  |                              |   |  |      |  
|Total            |  | 100                          | % |  | 100  | %
|                 |  |                              |   |  |      |  
|United States    |  | 30                           | % |  | 26   | %
|Asia             |  | 43                           | % |  | 36   | %
|Europe           |  | 23                           | % |  | 35   | %
|Other            |  | 4                            | % |  | 3    | %
|                 |  |                              |   |  |      |  
|Total            |  | 100                          | % |  | 100  | %
|                 |  |                              |   |  |      |  



|(1) | Net revenues from sales to Avnet and Acal to which rights of return and pricing discount programs are not applicable are included in net revenues attributable to our direct channel.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | Net revenues from sales to Avnet and Acal under agreements in which rights of return and pricing discount programs are applicable are included in net revenues attributable to our
distribution channel.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Net revenues decreased to $12.2 million in
the first quarter of 2005 from $13.8 million in the first quarter of 2004. This decrease was primarily the result three factors, all related to our wireless infrastructure OEM customers. First, our OEMs rescheduled certain Amplifier and Signal
Source division shipments from the first quarter of 2005 into the second quarter of 2005. Second, sales to our OEMs in the first quarter of 2005 were at lower average selling prices compared to the first quarter of 2004 as a result of our OEMs
negotiating lower prices for 2005. This also impacted our Amplifier and Signal Source divisions. Lastly, some of our Amplifier division OEMs transitioned to more advanced semiconductor process technology products, which have lower average selling
prices than some of our older products.



Sales into Asia increased to 43% of
total net revenues primarily as a result of our OEMs increasingly outsourcing their manufacturing to contract manufacturers, primarily in China. Also contributing to the percentage increase in sales to Asia was an increase in sales to Chinese OEM
customers as a result of our continued focus in the Asia region. Sales to Europe decreased to 23% of total net revenues, both as a result of the continued outsourcing of our OEM customers to their contract manufacturers and as a result of the order
deferrals and shipment delays by European customers in the first quarter of 2005.



The decrease in distribution net revenues in the first quarter of 2005 compared to 2004 was primarily attributable to our increased focus on large OEM customers, many of whom prefer to have direct relationships with their suppliers,
including us. In addition, in 2004, we began promoting the sales of our products to Asia through one of our resellers instead of through our distribution partners.



Cost of Revenues, Gross Margin and Gross Profit



Cost of revenues decreased to $6.8 million in the first quarter of 2005 from $7.4 million in the first quarter of 2004 primarily as a result
of lower sales in the first quarter of 2005 compared to 2004. The reduction in sales was also the primary contributor to the decrease in our gross profit to $5.3 million in the first quarter of 2005 from $6.4 million in the first quarter of 2004.
Gross margin decreased to 44% in the first quarter of 2005 from 46% in the first quarter of 2004. The decrease in gross margin was primarily attributable to the lower sales volume in our Amplifier and Signal Source divisions, as in periods in which
volumes are low, our fixed manufacturing overhead costs are allocated to fewer units, thereby negatively impacting our gross margin when those products are sold. Also contributing to the decrease in gross margin was a less favorable mix of products
shipped in the first quarter of 2005 compared to the first quarter of 2004 primarily in our Amplifier division. Additionally, in the first quarter of 2005, we experienced lower sales of previously written-down inventories compared to the first
quarter of 2004. Sales of previously written-down inventories had a positive impact on our gross margin in the first quarter of 2005 of less than one percentage point compared to a positive impact on our gross margin in the first quarter of 2004 of
approximately two percentage points. Operations personnel increased to 151 at March 31, 2005 from 149 at March 31, 2004.



Operating Expenses



Research and Development. Research and development expenses increased to $2.8 million in the first quarter of 2005 from $2.1 million in the first quarter of 2004.
This increase was primarily attributable to costs of additional personnel engaged in research and development activities subsequent to the acquisition of ISG. Salaries and salary related expenses increased by approximately $366,000 in the first
quarter of 2005 compared to the first quarter of 2004 primarily due to the acquisition of ISG.



Other contributory factors included additional costs associated with engineering material purchases, which added costs of approximately $171,000, software maintenance, which added costs of approximately $105,000 and
higher facility costs, which added costs of approximately $53,000. Research and development personnel increased to 65 at March 31, 2005 from 52 at March 31, 2004 due to the addition of 13 R&D employees in December of 2004 as a result of the
acquisition of ISG.



Sales and Marketing. Sales and marketing expenses
decreased to $1.8 million in the first quarter of 2005 from $1.9 million in the first quarter of 2004. This decrease was primarily attributable to lower costs associated with inside and outside sales representative commissions due to lower sales in
the first quarter of 2005. Inside and outside sales representative commissions decreased by approximately $139,000 in the first quarter of 2005 compared to the first quarter of 2004. Partially offsetting this decrease was an increase in salaries and
salary related expenses, as a result of an increase in headcount and an increase in compensation for our sales and marketing employees. Sales and marketing and applications engineering personnel increased to 37 at March 31, 2005 from 36 at March 31,
2004. The acquisition of ISG resulted in the addition of one sales and marketing person in December 2004.



16



---

##### Table of Contents

General and Administrative. General and administrative expenses increased to $2.2 million in the first quarter of
2005 from $1.8 million in the first quarter of 2004. This increase was primarily attributable to a write-off of $215,000 of previously deferred costs associated with an equity financing and an increase in salaries and salary related expenses of
approximately $183,000. The increase in salaries and salary related expenses was due to an increase in headcount and an increase in compensation for our general and administrative employees. Other contributory factors included higher costs
associated with professional fees (i.e. legal, accounting and public company related expenses) and employee relocation costs that were offset by reduced costs associated with Directors and Officers insurance premiums. General and administrative
personnel increased to 34 at March 31, 2005 from 32 at March 31, 2004. The acquisition of ISG resulted in the addition of one general and administrative person in December 2004.



Amortization of Deferred Stock Compensation. During the three months ended March 31, 2004, we recorded $3,000 of amortization of
deferred stock compensation. The deferred stock compensation was fully amortized in the first quarter of 2004.



Amortization of Acquisition-Related Intangible Assets



We recorded amortization of $465,000 in the first quarter of 2005 and $431,000 in the first quarter of 2004 related to our acquired intangible assets.



Interest and Other Income (Expense), Net



Interest and other income (expense), net, includes income from our cash and
available-for-sale securities, interest expense from capital lease financing obligations and other miscellaneous items. We had net interest and other income of $61,000 in the first quarter of 2005 and $27,000 in the first quarter of 2004. The
increase in net interest and other income in the first quarter of 2005 compared to the first quarter of 2004 was primarily attributable to an increase in interest rates.



Provision for (Benefit from) Income Taxes



We recorded a $77,000 benefit from income taxes in the first quarter of 2005. The benefit from income taxes represents our current estimated
tax rate for the full year of 2005 and consists of federal and state minimum taxes and income taxes on the earnings of certain foreign subsidiaries. The difference between the benefit from income taxes that would be derived by applying the statutory
rate to our loss before income taxes and the benefit actually recorded is due primarily to the impact of state and foreign taxes including other miscellaneous non-deductible items offset by federal net operating losses not utilized.



Liquidity and Capital Resources



We have financed our operations primarily through the private sale in 1999 of mandatorily
redeemable convertible preferred stock (which was subsequently converted to common stock) and from the net proceeds received upon completion of our initial public offering in May 2000. In addition, we generated cash flows from operations of $4.9
million in 2004 and $831,000 in the first quarter of 2005. As of March 31, 2005, we had cash and cash equivalents of $3.0 million and short-term investments of $7.9 million. At March 31, 2005, our working capital approximated $21.4 million. In
addition, we had $1.0 million of restricted cash as of March 31, 2005. At March 31, 2005, short-term debt totaled $38,000 and represented less than one percent of stockholders equity. We did not have any long-term debt at March 31, 2005.



Net cash used in, provided by operating activities



Operating activities provided cash of $831,000 in the first quarter of
2005. In first quarter of 2005, the primary source of cash was a reduction in accounts receivable as well as an increase in accounts payable. Uses of cash in the first quarter of 2005 were increases in other assets and decreases in accrued
acquisition costs and accrued restructuring.



Our accounts receivable were $2.0
million lower at the end of the first quarter of 2005 compared to the end of 2004. The decrease is primarily attributable to a $2.9 million decrease in net revenues in the first quarter of 2005 compared to the fourth quarter of 2004. Also, in the
first quarter of 2005 we collected a significant amount of the accounts receivable on our balance sheet at December 31, 2004 related to the acquisition of ISG at the end of 2004.



Our days sales outstanding remained at 66 days in the first quarter of 2005 consistent with the fourth quarter of 2004. Our DSOs were
positively impacted by collecting a significant amount of the accounts receivable on our balance sheet at December 31, 2004 related to the acquisition of ISG at the end of 2004. This positive effect was offset by an increase in shipments, as a
percentage of net revenues, to our OEM customers, who typically pay us more slowly than our non-OEM customers.



Inventories increased to $8.7 million at March 31, 2005 from $8.5 million at December 31, 2004. The increase was primarily attributable to us carrying a higher level of work-in-process and finished goods inventory as
a result of our OEMs rescheduling certain Amplifier and Signal Source division shipments from the first quarter of 2005. In addition, we increased safety stock levels for certain finished goods products, as we deemed appropriate.



Our inventory turns decreased to 3.2 at March 31, 2005 from 3.6 as we exited 2004. The
decrease in inventory turns was primarily attributable to the build in work-in-process and finished goods inventory as described above.



Accounts payable increased to $3.7 million at March 31, 2005 from $3.1 million at December 31, 2004. The increase in accounts payable in the first quarter of 2005 was
primarily attributable to an increase in purchasing activity.



Accrued
restructuring decreased to $289,000 at March 31, 2005 from $518,000 at December 31, 2004. Accrued restructuring decreased by $229,000 due to severance payments made to terminated employees and lease commitment payments.



Accrued acquisition costs decreased to $30,000 at March 31, 2005 from $779,000 at December
31, 2004 primarily as a result of payments made in the first quarter of 2005 related to our acquisition of ISG.



Other assets (current and non-current) increased to $2.5 million at March 31, 2005 from $2.1 million at December 31, 2004 primarily as a result of purchases of software
licenses.



Net cash used in investing activities totaled $496,000 in the
first quarter of 2005. The primary use of cash in investing activities in the first quarter of 2005 was for purchases of capital equipment.



17



---

##### Table of Contents

As a result of our acquisition of ISG at the end of 2004, additional cash consideration of up to $7,150,000 may become
due and payable for the achievement of margin contribution objectives attributable to sales of selected products for periods through December 31, 2007. The first installment of any such payments would be due in 2006 if earned, and would be a maximum
amount of $1.15 million. Additional payments of up to $3.0 million each may be paid in 2007 and 2008.



Cash provided by financing activities totaled $259,000 in the first quarter of 2005. The major financing inflow of cash in each quarter related to proceeds from employee stock plans. The major financing use of
cash in each quarter was for principal payments on capital lease obligations. We expect that our capital lease payments will decrease in the near future as our capital lease agreements expire. Our capital lease obligations totaled $38,000 as of
March 31, 2005.



Under the current economic and telecommunications market
conditions and the current company structure, and outlook for 2005, we expect that we will be able to fund our working capital and capital expenditure needs from the cash generated from operations for the foreseeable future. Other sources of
liquidity that may be available to us are the leasing of capital equipment, a line of credit at a commercial bank, or the sale of Company securities. The issuance of any additional shares would result in dilution to our existing stockholders. If we
draw on the other sources of liquidity and capital resources noted above to grow our business, execute our operating plans, or acquire complementary technologies or businesses, it could result in increased expense and lower profitability.



Contractual Obligations



As of March 31, 2005, our contractual obligations, including payments due by period, were as
follows (in thousands):



|                                   |  |                        |       |                 |   |           |  |           |       |                  |   |     |  |   |  
|---------------------------------- |  | ---------------------- | ----- | --------------- | - | --------- |  | --------- | ----- | ---------------- | - | --- |  | - | -
|                                   |  | Payments Due by Period
|                                   |  | Total                  |       | Less Than1 year |   | 1-3 Years |  | 3-5 Years |       | More Than5 Years
|Operating lease commitments        |  | $                      | 3,172 |                 | $ | 1,447     |  | $         | 1,598 |                  | $ | 127 |  | $ | 
|Capital lease commitments          |  | $                      | 39    |                 | $ | 39        |  | $         |      |                  | $ |    |  | $ | 
|Unconditional purchase obligations |  | $                      | 1,008 |                 | $ | 1,008     |  | $         |      |                  | $ |    |  | $ | 
|                                   |  |                        |       |                 |   |           |  |           |       |                  |   |     |  |   |  
|Total (1)                          |  | $                      | 4,219 |                 | $ | 2,494     |  | $         | 1,598 |                  | $ | 127 |  | $ | 

---

|(1) | Total does not include certain purchase obligations as discussed in the three paragraphs immediately below.
|--- | -----------------------------------------------------------------------------------------------------------



Purchase commitments are defined as agreements to purchase goods or services that are
enforceable and legally binding and that specify all significant terms, including open purchase orders. We include in purchase commitments contractual obligations we have with our vendors who supply us with our wafer requirements for IC-based
products. Because the wafers we purchase are unique to these suppliers and involve significant expense, our agreements with these suppliers prohibit cancellation subsequent to the production release of the products in our suppliers
manufacturing facilities, regardless of whether our end customers cancel orders with us or our requirements are reduced. Purchase orders or contracts for the purchase of raw materials, other than wafer requirements for IC-based products, and other
goods and services are not included in the table above. We are not able to determine the aggregate amount of such purchase orders that represent contractual obligations, as purchase orders may represent authorizations to purchase rather than binding
agreements. Our purchase orders are based on our current manufacturing needs and are generally fulfilled by our vendors within short time horizons. Except for wafers for our IC-based products, we do not have significant agreements for the purchase
of raw materials or other goods specifying minimum quantities or set prices that exceed our expected requirements for three months.



We also include in purchase commitments contractual obligations we have with a vendor for outsourced manufacturing services. Because certain of the components purchased
by this vendor are unique and cannot be used by its other customers, our agreement to fulfill the contract prohibits cancellation of certain components subsequent to the vendor placing purchase orders with its suppliers. We also enter into contracts
with other vendors for outsourced services; however, the obligations under these contracts were not significant and the contracts generally contain clauses allowing for cancellation without significant penalty.



We expect to fund these commitments with cash flows from operations. The expected timing of
payments of the obligations discussed above is based upon current information. Timing and actual amounts paid may be different depending on the time of receipt of goods or services or changes to agreed-upon amounts for some obligations.



Off-Balance-Sheet Arrangements



As of March 31, 2005 we did not have any off-balance sheet arrangements, as defined in Item
303(a)(4)(ii) of SEC Regulation S-K.



Recent Accounting Pronouncements



In December 2004, the FASB issued SFAS No. 123 (revised 2004),
Share-Based Payment (SFAS 123R), which replaces SFAS No. 123, Accounting for Stock-Based Compensation, (SFAS 123) and supersedes APB Opinion No. 25, Accounting for Stock Issued to
Employees. SFAS 123R requires all share-based payments to employees, including grants of employee stock options, to be recognized in the financial statements based on their fair values beginning with the first period of the next fiscal year
beginning after June 15, 2005. The pro forma disclosures previously permitted under SFAS 123 no longer will be an alternative to financial statement recognition. The Company is required to adopt SFAS 123R in the first quarter of 2006, beginning
January 1, 2006. Under SFAS 123R, the Company must determine the appropriate fair value model to be used for valuing share-based payments, the amortization method for compensation cost and the transition method to be used at the date of adoption.
The transition methods include modified prospective and modified retrospective adoption options. Under the modified retrospective option, prior periods may be restated either



18



---

##### Table of Contents

as of the beginning of the year of adoption or for all periods presented. The modified prospective method requires that compensation expense be recorded for
all unvested stock options and restricted stock at the beginning of the first quarter of adoption of SFAS 123R, while the modified retrospective methods would record compensation expense for all unvested stock options and restricted stock beginning
with the first period restated. The Company is evaluating the requirements of SFAS 123R and expects that the adoption of SFAS 123R will have a material adverse impact on the Companys consolidated results of operations and earnings per share.
The Company has not yet determined the method of adoption or the effect of adopting SFAS 123R.



Business Outlook



This business outlook
represents the view of management as of the date of this Quarterly Report on Form 10-Q and under the current economic and telecommunications market conditions, and the current company structure. It contains many forward-looking statements. Actual
events or results may differ materially from any forward-looking statement as a result of various factors, including those described under Risk Factors below.



In 2004 as compared to 2003, we saw an increase in the demand for our products across a broad spectrum of customers and applications and for
a wide variety of our products. We experienced a slight weakening in our sales in the fourth quarter of 2004 and a more pronounced decline the first quarter of 2005, due in large part to deferrals and shipment delays resulting from revised OEM
forecasts. Given our sales results in the fourth quarter of 2004 and the first quarter of 2005, it is uncertain whether the overall increase in sales in 2004 over 2003 represents a significant long-term upturn in demand from our end customers, or a
short-term upturn, which is a critical uncertainty in assessing our financial outlook.



We believe that the primary factors affecting our revenue outlook for the remainder of 2005 will be the extent of growth in the overall communications and A&D markets, as well as the demand from our customers for any new products we may
introduce. We continue to focus on our goal of growing revenues by increasing the market share of our existing products, and by diversifying our end markets through the development of new products and the addition of complementary products.



We believe the most significant influences on our outlook for gross margin for
the remainder of 2005 will be the factors mentioned under Gross Profit and Margin Overview above, including product features, product type, market, sales channel, level of integration of the product, and the efficiency and effectiveness
of our manufacturing operations. Increasing our gross profit and our gross margin are key goals for the remainder of 2005.



With respect to operating expenses, we believe that the single largest factor affecting our overall operating expenses will be the extent of growth in our customers
end markets and the resulting impact on our net revenues. In response to the decline in sales we experienced in the first quarter of 2005, we have begun to implement cost cutting measures intended to bring our operating expenses more in line with
our revised sales expectations. If the lowered sales activity we experienced in the first quarter of 2005 continues in future quarters, we anticipate taking further actions to adjust our operating expenses accordingly.



As mentioned earlier in this MD&A, we believe our continued success is dependent on
technological advancement, including developing new technologies and differentiated products for our various market segments, driven by our research and development spending for 2005. Our research and development expenses could vary significantly
from quarter to quarter depending largely on the timing of wafer and mask set purchases.



Regarding general and administrative expense, we believe the most significant factor that might impact our estimates will be the amount and timing of the cost for complying with corporate governance and accounting
rule pronouncements.



Our expenses will also vary depending upon the level and
type of any acquisition or offering activity we may engage in during a given period. These activities may result in transaction-related, one-time charges and amortization of acquisition-related intangible assets.



We believe the most significant factors influencing our cash flow from operations for the
remainder of 2005 will be our ability to generate net income, the length of time it takes to collect our accounts receivable and the amount of inventory we will have to buy to support our customer orders. We believe the most significant factors
influencing our non-operating cash flow for the remainder of 2005 will be our capital expenditures and the amount of cash received from employee stock plans. We expect that we will be able to fund our working capital and capital expenditure needs
for the foreseeable future from the cash generated from operations.



We believe
the most important items affecting our accounts receivable management will be the linearity of our shipments to, and the percentage of total net revenue from, our large OEM customers, and their CMs. Also impacting our accounts receivable management
will be the geographic location of our shipments, particularly in Asia. Our large OEMs, and in particular their CMs, as well as our customers in Asia, generally pay more slowly than our other customers thereby slowing our cash collection of our
accounts receivable. We expect the current trend toward large wireless OEMs outsourcing their manufacturing to continue. We also expect the trend of increasing sales into Asia to continue. With the visibility we have now into this mix, we expect our
DSOs to increase in 2005 compared to 2004.



We believe that the two
largest factors affecting our cash usage in inventory will be the order pattern of our customers and the amount of inventory required to support our forecasted demand. As a result of our expectations regarding our future sales, we may have to
increase our inventory. With the visibility we now have into these factors, our goal is to keep our inventory turns reasonably consistent with our experience in 2004.



We believe the largest factors influencing cash usage for capital expenditures will be the order patterns of our customers. We will continue
to purchase a limited amount of capital equipment in response to these orders.



Factors that may influence the level of proceeds we receive from employee stock plans include our stock price level and employee cash needs for personal reasons.



RISK FACTORS



Set forth below and elsewhere in this Quarterly Report on Form 10-Q and in other documents we file with the SEC are risks and uncertainties that could cause actual
results to differ materially from the results contemplated by the forward-looking statements contained in this Quarterly Report on Form 10-Q.



We have a history of significant operating losses. If we are unable to increase our gross profit sufficiently to offset our operating expenses, our history of
operating losses will continue.



Although our income from operations
approximated $186,000 for 2004, we incurred significant losses from operations in the first quarter of 2005 and the years ended December 31, 2003 and 2002. Losses from operations approximated $2.0 million in the first quarter of 2005, $6.7 million
in the year ended December 31, 2003 and $11.4 million in the year ended December 31, 2002. As of March 31, 2005, our accumulated deficit was approximately $91.0 million. It is possible that we will not generate a sufficient level of gross profit to
return to or increase our profitability.



19



---

##### Table of Contents

Our gross profit depends on a number of factors, some of which are not within our control, including:



| |  |  | changes in our product mix and in the markets in which our products are sold, and particularly in the relative mix of IC and MCM products sold;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | changes in the relative percentage of products sold through distributors as compared to direct sales; and
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | the cost of raw materials used in producing our products.
| | - |  | ---------------------------------------------------------



As a result of these factors, we may be unable to maintain or increase our gross profit in future periods. If we are unable to increase our gross profit sufficiently to
offset our operating expenses, we will not return to profitability, and our history of operating losses will continue.



Even if we do achieve significant gross profit from our product sales, our operating expenses may increase over the next several quarters, as we may, among other things:



| |  |  | expand our selling and marketing activities;
| | - |  | --------------------------------------------



| |  |  | experience increases in general and administrative expense related to corporate governance and accounting rule pronouncements; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------



| |  |  | increase our research and development activities for both existing and new products and technologies.
| | - |  | -----------------------------------------------------------------------------------------------------



As a result, we may need to significantly increase our gross profit to the extent we experience an increase in operating expenses. We may be
unable to do so, and therefore, we cannot be certain that we will be able to return to or increase profitability on a quarterly or annual basis, if at all.



Our operating results will fluctuate and we may not meet quarterly financial expectations, which could cause our stock price to decline.



Our quarterly operating results have varied significantly in the past and are likely to vary
significantly in the future based upon a number of factors, many of which we have little or no control over. Factors that could cause our operating results to fluctuate include:



| |  |  | the reduction, rescheduling or cancellation of orders by customers, whether as a result of slowing demand for our products or our customers products, over-ordering of our
products or otherwise;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | general economic growth or decline;
| | - |  | -----------------------------------



| |  |  | fluctuations in manufacturing output, yields, quality control or other potential problems or delays in the fabrication, assembly, testing or delivery of our products;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | telecommunications and A&D industry conditions, generally and demand for products containing RF components specifically;
| | - |  | ------------------------------------------------------------------------------------------------------------------------



| |  |  | the timing and success of new product and technology introductions by us or our competitors;
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | our ability to introduce and deliver new products on a timely basis;
| | - |  | --------------------------------------------------------------------



| |  |  | market acceptance of our products;
| | - |  | ----------------------------------



20



---

##### Table of Contents

| |  |  | availability of raw materials, semiconductor wafers and manufacturing capacity;
| | - |  | -------------------------------------------------------------------------------



| |  |  | increase in the costs or discontinuance of products obtained from suppliers;
| | - |  | ----------------------------------------------------------------------------



| |  |  | changes in customer purchasing cycles and component inventory levels;
| | - |  | ---------------------------------------------------------------------



| |  |  | changes in selling prices for our RF components due to competitive or currency exchange rate pressures;
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | the gain or loss of a key customer or significant changes in the financial condition of one or more key customers;
| | - |  | ------------------------------------------------------------------------------------------------------------------



| |  |  | amounts and timing of investments in R&D;
| | - |  | -----------------------------------------



| |  |  | costs associated with acquisitions and the integration of acquired companies;
| | - |  | -----------------------------------------------------------------------------



| |  |  | factors affecting our reported income taxes and income tax rate;
| | - |  | ----------------------------------------------------------------



| |  |  | the effects of changes in accounting standards, including rules regarding recognition of expense for employee stock options; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | the effects of war, acts of terrorism or global threats, such as disruption in general economic activity, and the effects on the economy and our business due to increasing oil
prices.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



The occurrence of these and other factors could cause us
to fail to meet quarterly financial expectations, which could cause our stock price to decline. For example, in the first quarter of 2005 and the fourth quarter of 2004, our financial results were below investment community expectations, in part due
to rescheduling of customer orders, and our stock price subsequently declined.



Our results may suffer if we are not able to accurately forecast demand for our products.



Our business is characterized by short-term orders and shipment schedules. Customer orders can typically be cancelled or rescheduled without significant penalty to the
customer. Because we do not have substantial non-cancelable backlog, we typically plan our production and inventory levels based on internal forecasts of customer demand, which can be highly unpredictable and can fluctuate substantially.



During periods of industry downturn, such as we have experienced in the past, customers do
not generally order products as far in advance of the scheduled shipment date as they do during periods when our industry is not in a downturn. We therefore experienced lower levels of backlog during the last downturn, making it more difficult for
us to forecast production levels, capacity and net revenues. We are currently in a period where it is difficult to predict future growth in the markets we serve, making it more difficult to estimate requirements for production capacity. If we are
unable to plan inventory and production levels effectively, our business, financial condition and results of operations could be materially adversely affected.



From time to time, in response to anticipated long lead times to obtain inventory and materials from our outside suppliers and foundries, we may order materials in
advance of customer demand. This advance ordering has in the past and may in the future result in excess inventory levels or unanticipated inventory write-downs if expected orders fail to materialize, or other factors make our products less
saleable. Accordingly, our business, financial condition and results of operations could be materially, adversely affected.



We expect to make future acquisitions, which involve numerous risks.



We have in the past and will continue to evaluate potential acquisitions of, and investments in, complementary businesses, technologies,
services or products, and expect to pursue such acquisitions and investments if appropriate opportunities arise. However, we may not be able to identify suitable acquisition or investment candidates in the future, or if we do identify suitable
candidates, may not be able to make such acquisitions or investments on commercially acceptable terms, or at all. In the event we pursue acquisitions, we will face numerous risks including:



| |  |  | difficulties in integrating the personnel, operations, technology or products and service offerings of the acquired company;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------



| |  |  | diversion of managements attention from normal daily operations of the business;
| | - |  | ---------------------------------------------------------------------------------



21



---

##### Table of Contents

| |  |  | difficulties in entering markets where competitors in such markets have stronger market positions;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | difficulties in managing and integrating operations in geographically dispersed locations;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | the loss of any key personnel of the acquired company;
| | - |  | ------------------------------------------------------



| |  |  | maintaining customer, supplier or other favorable business relationships of acquired operations;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | insufficient net revenues to offset increased expenses associated with acquisitions; and
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | additional expense associated with amortization or depreciation of acquired tangible and intangible assets.
| | - |  | -----------------------------------------------------------------------------------------------------------



Even if an acquisition or alliance is successfully integrated, we may not receive the
expected benefits or synergies of the transaction. Past transactions have resulted, and future transactions may result, in significant costs and expenses and charges to earnings. The accounting treatment for any acquisition may result in significant
goodwill, which, if impaired, will negatively affect our consolidated results of operations. The accounting treatment for any acquisition may also result in significant in-process research and development charges, which will negatively affect our
consolidated results of operations in the period in which an acquisition is consummated. In addition, any completed, pending or future transactions may result in unanticipated expenses or liabilities associated with the acquired assets or
businesses. Furthermore, we may incur indebtedness or issue equity securities to pay for any future acquisitions. The incurrence of indebtedness could be detrimental to our results of operations, and the issuance of equity securities could be
dilutive to our existing stockholders. Any or all of the above factors may differ from the investment communitys expectations in a given quarter, which could negatively affect our stock price.



Our gross margin will fluctuate from period to period.



Numerous factors will cause our gross margin to fluctuate from period to period. For
example, the gross margin on sales to our large OEM customers has historically been lower than on sales through our distribution channel or sales to some of our smaller direct customers, primarily due to the bargaining power attendant with large OEM
customers and their higher product volumes. If, as we expect, these larger equipment OEMs and other global OEMs continue to account for a majority of our net revenues for the foreseeable future, the continuance of this trend will likely have a
negative impact on our gross margins in future periods. In addition, sales of our IC products have historically yielded a higher gross margin than our MCM products. Therefore, increased sales of MCM products in a given period will likely have a
negative effect on our gross margin. In addition, we anticipate that sales of certain of our recently acquired broadband products, in particular satellite radio antennas, will have lower gross margins than sales of our wireless infrastructure
products. Therefore, increased sales of satellite radio antenna products in a given period will likely have a negative effect on our gross margin. Other factors that could cause our gross margin to fluctuate include the features of the products we
sell, the markets into which we sell our products, the level of integration of our products, the efficiency and effectiveness of our manufacturing operations, provisions for excess inventories and sales of previously written-down inventories. As a
result of these or other factors, we may be unable to maintain or increase our gross margin in future periods.



Our growth depends on the growth of the wireless and wireline communications infrastructure market. If this market does not grow, or if it grows at a slow rate, demand for our products may fail to grow or
diminish.



Our growth will depend on the growth of the
telecommunications industry in general and, in particular, the market for wireless and wireline infrastructure components. We cannot assure you that the market for these products will grow at all. If the market does not grow or experiences a
downturn, we may be unable to expand our business. In the past, there have been reductions throughout the worldwide telecommunications industry in component inventory levels and equipment production volumes, and delays in the build-out of new
wireless and wireline infrastructure. These events have had an adverse effect on our operations and caused us, in the past, to lower our previously announced expectations for our financial results, which caused the market price of our common stock
to decrease. The occurrence of the events described above could result in lower or erratic sales for our products and could have a material adverse effect on our business, financial condition and results of operations. A substantial portion of our
net revenues are currently derived from sales of components for wireless infrastructure applications. As a result, downturns in the wireless communications market, such as the significant downturn that began in 2001, could have a material adverse
effect on our business, financial condition and results of operations.



We depend on a relatively small number of customers, many of which are concentrated in the wireless communications market, for a significant portion of our net revenues. The loss of sales to any of these customers, or a downturn in
that market, could adversely affect our net revenues.



A relatively
small number of customers account for a significant portion of our net revenues in any particular period. For example, in the first quarter of 2005, sales to Motorola, represented 16% of net revenues; sales through Avnet, one of our distributors and
resellers, represented 14% of net revenues; and sales through Acal, another of our distributors and resellers, represented 12% of net revenues. In addition, wireless infrastructure OEMs, such as Ericsson, account for a significant amount of our net
revenues, either directly or through sales to their contract manufacturers such as Celestica. For example, in the first quarter of 2005, Ericsson and Motorola each accounted for, directly or indirectly, more than 10% of our net revenues. While we do
enter into long-term supply agreements with customers from time to time, these contracts typically do not require the customer to buy any minimum amount of our products, and orders are typically handled on a purchase order by purchase order basis.
The loss of any one of these customers could limit our ability to sustain and grow our net revenues.



Sales to our large OEM customers have been affected by a pattern of product price decline, which can harm our business.



The market for our wireless communications products is characterized by rapid technological change, evolving industry standards, product
obsolescence, and significant price competition, and, as a result, is subject to decreases in selling



22



---

##### Table of Contents

prices. We are unable to predict future prices for our products, but we expect that prices for products that we sell to our large wireless infrastructure OEM
customers, who we expect to continue to account for a majority of our net revenues for the foreseeable future, will continue to be subject to significant downward pressure. Wireless infrastructure OEMs continue to require components from their
suppliers, including us, to deliver improved performance at lower prices. Accordingly, our ability to maintain or increase net revenues will be dependent on our ability to increase unit sales volumes of existing products and to successfully develop,
introduce and sell new products with higher prices into both the wireless infrastructure and other markets. We are also making a significant effort to develop new sales channels and customer bases in which we hope price competition will not be as
significant as it is in selling to large wireless infrastructure OEMs. There can be no assurance that we will be able to develop significant new customers outside the wireless infrastructure market, increase unit sales volumes of existing products,
or develop, introduce and/or sell new products.



The declining selling prices
we have experienced in the past and the pricing pressure we continue to face in the wireless infrastructure market have also negatively affected and may in the future negatively affect our gross margins. To maintain or increase our gross margins, we
must continue to meet our customers design and performance needs while reducing our costs through efficient raw material procurement and process and product improvements. Even if we are able to increase unit sales volumes and reduce our costs
per unit, there can be no assurance that we would be able to maintain or increase net revenues or profits.



If we fail to introduce new products in a timely and cost-effective manner, our ability to sustain and increase our net revenues could suffer.



The markets for our products are characterized by new product introductions, evolving
industry standards and changes in manufacturing technologies. Because of this, our future success will in large part depend on our ability to:



| |  |  | continue to introduce new products in a timely fashion;
| | - |  | -------------------------------------------------------



| |  |  | gain market acceptance of our products;
| | - |  | ---------------------------------------



| |  |  | improve our existing products to meet customer requirements;
| | - |  | ------------------------------------------------------------



| |  |  | adapt our products to support established and emerging industry standards;
| | - |  | --------------------------------------------------------------------------



| |  |  | adapt our products to support evolving wireless and wireline equipment architectures; and
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | access new process and product technologies.
| | - |  | --------------------------------------------



We estimate that the development cycles of some of our products from concept to production could last more than 12 months. We have in the past experienced delays in the
release of new products. We may not be able to introduce new products in a timely and cost-effective manner, which would impair our ability to sustain and increase our net revenues.



Product quality, performance and reliability problems could disrupt our business and harm our financial condition and results of
operations.



Our customers demand that our products meet stringent
quality, reliability and performance standards. RF components such as those we produce may contain undetected defects or flaws when first introduced or after commencement of commercial shipments. In addition, some of our products are manufactured
using process technologies that are relatively new and for which long-term field performance data are not available. As a result, defects or failures have in the past, and may in the future occur relating to our product quality, performance and
reliability, despite testing by us, our suppliers or our customers. If these failures or defects occur or become significant, we could experience:



| |  |  | loss of net revenues;
| | - |  | ---------------------



| |  |  | delays in, or cancellations or rescheduling of, orders or shipments;
| | - |  | --------------------------------------------------------------------



| |  |  | loss of, or delays in, market acceptance of our products;
| | - |  | ---------------------------------------------------------



| |  |  | significant expenditures of capital and resources to resolve such problems;
| | - |  | ---------------------------------------------------------------------------



| |  |  | other costs including inventory write-offs and costs associated with customer support;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | product returns or discounts;
| | - |  | -----------------------------



23



---

##### Table of Contents

| |  |  | diversion of technical and other resources from our other development efforts;
| | - |  | ------------------------------------------------------------------------------



| |  |  | warranty and product liability claims, lawsuits and liability for damages caused by such defects; and
| | - |  | -----------------------------------------------------------------------------------------------------



| |  |  | loss of credibility with our current and prospective customers.
| | - |  | ---------------------------------------------------------------



We may encounter difficulties managing our business if there is a decrease in demand for our products in future periods.



The world economy in general and the telecommunications industry in particular experienced a
significant slowdown that began in 2001. Economic downturns may cause us to experience difficulties maintaining employee morale, retaining employees, completing research and development initiatives, maintaining relationships with our customers and
vendors and obtaining financing on favorable terms or at all. Significantly lower sales would likely lead to further provisions for excess inventories and further actions to restructure our operations. These actions could include, but would not be
limited to, further abandonment or obsolescence of equipment, impairment of assets, consolidation of facilities and a workforce reduction. The occurrence of any of these events could have a material adverse effect on our business, financial
condition and results of operations.



Our customers reliance on
contract manufacturers to build their products makes it more difficult for us to forecast future demand.



Our OEM customers are increasingly outsourcing the manufacturing of their equipment to CMs. As a result, we sell directly to both OEMs and CMs. While our OEM customers
currently make the sourcing decision for our sales to CMs, the existence of an additional layer in the supply chain between us and the end OEM customer can make it more difficult for us to accurately forecast demand. In addition, the ability of CMs
to manufacture and test high performance RF components tends to be more limited than that of the OEMs. These factors can be disruptive to the normal flow of our business and reduce our operating efficiency. Either of these factors could result in
lower than expected net revenues and a resulting decline in our stock price.



Our efforts to diversify our product portfolio and expand into new markets have attendant execution risk.



While historically we have derived most of our net revenues from the sale of products to the mobile wireless infrastructure market, one of our corporate strategies
involves leveraging our core strengths in high-performance RF component design, modular design process technology and wireless systems application knowledge to expand into new markets which have similar product performance requirements, such as the
broadband wireless access, VoIP, cable, satellite radio and RFID markets. We do not have a long history in many of these markets or to consumer-oriented markets generally, and our lack of market knowledge relative to other participants in such
markets may prevent us from competing effectively in them. It is possible that our competitive strengths will not translate effectively into these markets, or that these markets will not develop at the rates we anticipate. Any of these events could
negatively affect our future operating results.



Our reliance on
third-party wafer fabs to manufacture our semiconductor wafers may cause a significant delay in our ability to fill orders and limits our ability to assure product quality and to control costs.



We do not own or operate a semiconductor fabrication facility. We currently rely on six
third-party wafer fabs to manufacture our semiconductor wafers. These fabs include Northrop Grumman (NG) (formerly TRW) and RF Micro Devices (RFMD) for aluminum gallium arsenide (AlGaAs), Atmel for silicon germanium (SiGe), TriQuint Semiconductors
for our discrete devices, GCS for our indium gallium phosphide heterojunction bipolar (InGaP HBT) devices, and an Asian foundry that supplies us with laterally diffused metal on oxide (LDMOS) devices. In the first quarter of 2005, a significant
majority of our semiconductors in terms of both volume and revenue were provided by Northrop Grumman, RFMD and Atmel.



The loss of one of our third-party wafer fabs, or any reduction of capacity, manufacturing disruption, or delay or reduction in wafer supply, would negatively impact our
ability to fulfill customer orders, perhaps materially, and could damage our relationships with our customers, either of which could significantly harm our business and operating results.



Our contracts with these foundries, with the exception of that with TriQuint, feature last-time buy (LTB) arrangements. An LTB
arrangement typically provides that, if the vendor decides to obsolete or materially change the process by which our products are made, we will be given prior notice and opportunity to make a last purchase of wafers in volume. While the goal of the
LTB arrangement is to allow us a sufficient supply of wafers in such instances to either meet our future needs or give us time to transition our products to, and qualify, another supply source, there can be no assurance that the volume of wafers
provided for under any LTB arrangement will adequately meet our future requirements.



In December 2004, NG notified us that, as of December 2005, they were discontinuing the operation of the fabrication line on which our products are made. We believe that through a combination of our current inventory, our LTB arrangement
with NG, transitioning our customers to products using SiGe, and potential access to a similar fabrication plant at RFMD, we will have a sufficient wafer supply to meet our currently anticipated customer needs. However, there can be no assurance
that sufficient supplies of such wafers will become available to the Company. In addition, any transfer of our designs to the RFMD production process could be hampered by delays that can arise whenever we are required to qualify a new supplier or
begin using a new process.



Upon the discontinuation of the NG AlGaAs process
in 2005, Atmel, GCS, RFMD, TriQuint, and our Asian foundry will each be our sole source for parts in the particular fabrication technology manufactured at their facility. GCS is a private company with a limited operating history.



Because there are limited numbers of third-party wafer fabs that use the particular process
technologies we select for our products and that have sufficient capacity to meet our needs, it would be difficult to find an alternative source of supply. Even if we were able to find an alternative source, using alternative or additional
third-party wafer fabs would require an extensive qualification process that could prevent or delay product shipments, which could have a material adverse effect on our business, financial condition and results of operations.



24



---

##### Table of Contents

Our reliance on these third-party wafer fabs involves several additional risks, including reduced control over the
manufacturing costs, delivery times, reliability and quality of our components produced from these wafers. The fabrication of semiconductor wafers is a highly complex and precise process. We expect that our customers will continue to establish
demanding specifications for quality, performance and reliability that must be met by our products. Our third-party wafer fabs may not be able to achieve and maintain acceptable production yields in the future. To the extent our third-party wafer
fabs suffer failures or defects, we could experience warranty and product liability claims, lost net revenues, increased costs, and delays in, cancellations or rescheduling of orders or shipments, any of which could have a material adverse effect on
our business, financial condition and results of operations.



In the past, we
have experienced delays in product shipments, quality issues and poor manufacturing yields from our third-party wafer fabs, which in turn delayed product shipments to our customers and resulted in higher costs of production and lower gross margins.
We may in the future experience similar delays or other problems, such as inadequate wafer supply.



Our reliance on subcontractors to package our products could cause a delay in our ability to fulfill orders or could increase our cost of revenues.



We do not package the RF semiconductor components that we sell but rather rely on
subcontractors to package our products. Packaging is the procedure of electrically bonding and encapsulating the IC into its final protective plastic or ceramic casing. We provide the wafers containing the ICs to third-party packagers. Although we
currently work with five packagers, substantially all of our Amplifier division net revenues in the first quarter of 2005 were attributable to products packaged by two subcontractors. We do not have long-term contracts with our third-party packagers
stipulating fixed prices or packaging volumes. Therefore, in the future, we may be unable to obtain sufficiently high quality or timely packaging of our products. The loss or reduction in packaging capacity of any of our current packagers,
particularly Circuit Electronic Industries Public Co., Ltd. (CEI), or Unisem, would significantly damage our business. In addition, increased packaging costs would adversely affect our gross margins and profitability.



The fragile nature of the semiconductor wafers that we use in our components requires
sophisticated packaging techniques and has in the past resulted in low packaging yields. If our packaging subcontractors fail to achieve and maintain acceptable production yields in the future, we could experience increased costs, including warranty
and product liability expense and costs associated with customer support, delays in or cancellations or rescheduling of orders or shipments, product returns or discounts and lost net revenues, any of which could have a material adverse effect on our
business, financial condition and results of operations.



We currently
outsource the manufacture and test of some of our products and may increasingly adopt this practice in the future. We may not be able to outsource these functions on favorable terms, or at all.



We currently outsource a portion of our product manufacturing and testing function, and may
increasingly do so where economically viable for both the vendor and us. However, we may be unable to successfully outsource this function in the near term, or at all. The selection and ultimate qualification of subcontractors to manufacture and
test our products could be costly and increase our cost of revenues. In addition, we also do not know if we will be able to negotiate long-term contracts with subcontractors to manufacture and test our products at acceptable prices or volumes.
Because our components require sophisticated testing techniques, we may also be unable to obtain sufficiently high quality or timely manufacture and testing of our products. If a potential subcontractor to manufacture and test RF components is not
successful in adopting such techniques, we could experience increased costs, including warranty and product liability expense and costs associated with customer support, delays in or cancellations or rescheduling of orders or shipments, delayed
qualification of new products with our customers, product returns or discounts and lost net revenues, any of which could have a material adverse effect on our business, financial condition and results of operations.



We may experience difficulties in managing any future growth.



Our ability to successfully manage our business plan in a rapidly evolving market requires
us to effectively plan and manage any future growth. Our ability to manage future growth will be dependent in large part on a number of factors, including:



| |  |  | maintaining access to sufficient manufacturing capacity to meet customer demands;
| | - |  | ---------------------------------------------------------------------------------



| |  |  | arranging for sufficient supply of key components to avoid shortages of components that are critical to our products;
| | - |  | ---------------------------------------------------------------------------------------------------------------------



| |  |  | retaining and/or hiring additional skilled technical, marketing and managerial personnel;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | adhering to our high quality and process execution standards, particularly as we hire and train new employees;
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | upgrading our operational and financial systems, procedures and controls, including possible improvement of our accounting and internal management systems; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | maintaining high levels of customer satisfaction.
| | - |  | -------------------------------------------------



In 2004, we experienced a significant increase in the overall demand for our products as compared to the prior year. If we are unable to effectively manage any future
growth, our operations may be impacted and we may experience delays in delivering products to our customers. Any such delays could affect our customers ability to deliver products in accordance with their planned manufacturing schedules, which
could adversely affect our customer relationships. We may also be required to build additional component inventory in order to offset expected future component shortages. If we do not manage any future growth properly, our business, financial
condition and results of operations could be materially adversely affected.



25



---

##### Table of Contents

A significant portion of our products are sold to international customers, which exposes us to numerous risks.



A significant portion of our direct sales and sales through our
distributors are to foreign purchasers, particularly in China, Germany, Sweden, and Finland. International sales approximated 70% of our net revenues in the first quarter of 2005. Demand for our products in foreign markets could decrease, which
could have a material adverse effect on our business, financial condition and results of operations. Moreover, sales to international customers may be subject to numerous risks, including:



| |  |  | changes in trade policy and regulatory requirements;
| | - |  | ----------------------------------------------------



| |  |  | duties, tariffs and other trade barriers and restrictions;
| | - |  | ----------------------------------------------------------



| |  |  | timing and availability of export licenses;
| | - |  | -------------------------------------------



| |  |  | delays in placing orders;
| | - |  | -------------------------



| |  |  | difficulties in managing distributors sales to foreign countries;
| | - |  | ------------------------------------------------------------------



| |  |  | the complexity and necessity of using foreign representatives;
| | - |  | --------------------------------------------------------------



| |  |  | compliance with a variety of foreign and U.S. laws affecting activities abroad;
| | - |  | -------------------------------------------------------------------------------



| |  |  | potentially adverse tax consequences;
| | - |  | -------------------------------------



| |  |  | trade disputes; and
| | - |  | -------------------



| |  |  | political, social and economic instability.
| | - |  | -------------------------------------------



We are also subject to risks associated with the imposition of legislation and regulations relating to the import or export of high technology products. We cannot predict
whether quotas, duties, taxes or other charges or restrictions upon the importation or exportation of our products will be implemented by the United States or other countries.



Because sales of our products have been denominated to date in United States dollars, increases in the value of the United States dollar
could increase the price of our products so that they become relatively more expensive to customers in the local currency of a particular country, leading our customers to order fewer of our products, thereby reducing our sales and profitability in
that country. Some of our customer purchase orders and agreements are governed by foreign laws, which may differ significantly from United States laws; therefore, we may be limited in our ability to enforce our rights under such agreements and to
collect damages, if awarded.



Our reliance on foreign suppliers and
manufacturers exposes us to the economic and political risks of the countries in which they are located.



Independent third parties in other countries, primarily in Thailand, Malaysia, South Korea and the Philippines, package substantially all of our semiconductor products.
In addition, we obtain some of our semiconductor wafers from one supplier located in Germany. Due to our reliance on foreign suppliers and packagers, we are subject to the risks of conducting business outside the United States. These risks include:



| |  |  | unexpected changes in, or impositions of, legislative or regulatory requirements;
| | - |  | ---------------------------------------------------------------------------------



| |  |  | shipment delays, including delays resulting from difficulty in obtaining export licenses;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | tariffs and other trade barriers and restrictions;
| | - |  | --------------------------------------------------



26



---

##### Table of Contents

| |  |  | political, social and economic instability; and
| | - |  | -----------------------------------------------



| |  |  | potential hostilities and changes in diplomatic and trade relationships.
| | - |  | ------------------------------------------------------------------------



In addition, we currently transact business with our foreign suppliers and packagers in U.S. dollars. Consequently, if the currencies of our suppliers countries
were to increase in value against the U.S. dollar, our suppliers may attempt to raise the cost of our semiconductor wafers, packaging materials and services, and other materials, which could have a material adverse effect on our business, financial
condition and results of operations.



Sources for certain components and
materials are limited, which could result in delays or reductions in product shipments.



The semiconductor industry from time to time is affected by limited supplies of certain key components and materials. For example, we rely on limited sources for certain packaging materials. If we, or our packaging
subcontractors, are unable to obtain these or other materials in the required quantity and quality, we could experience delays or reductions in product shipments, which would materially and adversely affect our profitability. Although we have not
experienced any significant difficulty to date in obtaining these materials, shortages may arise in the future. If key components or materials are unavailable, our net revenues could decline.



We face several risks associated with our Aerospace and Defense division.



In 2003 we announced the creation of our A&D business unit that
targets customers in the military, defense, avionics, space and homeland security market segments. In the first quarter of 2005, we reorganized our business segments and now report A&D as a division. While we have increased sales for this
division in 2004 in comparison to 2003, we can make no assurance that we will be able to successfully serve the needs of potential customers in these markets or realize any significant increase in net revenues from this business in the future.
Through our participation in this market, we may make sales to companies doing business with the U.S. government as prime contractors or subcontractors. Although unlikely, we may also do business directly with the U.S. government. In addition to
normal business risks, we face several unique risks, largely beyond our control, associated with doing business, directly or indirectly, with the U.S. government, including:



| |  |  | the reliance of our customers and us on the availability of government funding and their and our ability to obtain future government contractor awards;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the intense competition for future government contractor awards;
| | - |  | ----------------------------------------------------------------



| |  |  | changes in government or customer priorities due to program reviews or revisions to strategic objectives;
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | difficulty of forecasting costs and schedules when bidding on developmental and highly sophisticated technical work;
| | - |  | --------------------------------------------------------------------------------------------------------------------



| |  |  | the ability of the U.S. government to terminate, without prior notice, partially completed government programs that were previously authorized, resulting in possible termination of
our customer contracts;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | significant changes in contract scheduling; and
| | - |  | -----------------------------------------------



| |  |  | government import and export policies and other government regulations.
| | - |  | -----------------------------------------------------------------------



The termination of funding for a government program for which we serve as a supplier would result in a loss of anticipated future net revenues attributable to that
program. Our government business is also subject to specific procurement regulations and a variety of socio-economic and other requirements, including necessary security clearances. These requirements, although customary in government contracts,
increase our performance and compliance costs and could result in delays in fulfilling customer orders or our inability to meet customer demand for products. Government contract performance and compliance costs might increase in the future, which
could reduce our gross margins and have a material adverse effect on our business, financial condition and results of operations.



We depend on Avnet, Acal, Planet Technology (H.K.) Ltd. and other distributors and resellers of our products for a significant portion of our sales. The loss of
such a distributor or reseller, or the failure to develop new and viable distribution and reseller relationships, may adversely affect our revenues.



Although sales through distribution have significantly decreased since 2003, two distributors who also serve as resellers for our products, Acal and Avnet, accounted for
a substantial portion of our net revenues in recent periods. Sales through Acal, including sales to Acal as a reseller, represented 12% of net revenues in the first quarter of 2005. Sales to Avnet, including sales to Avnet as a reseller, represented
14% of net revenues in the first quarter of 2005. Acal and Avnet distribute our products to a large number of end customers. In addition, sales to Planet Technology (H.K.) Ltd., a reseller in China, exceeded 10% of our total revenues in 2004 and
slightly less than 10% in the first quarter of 2005. We anticipate that sales through Acal, Avnet and Planet Technology will continue to account for a substantial portion of our net revenues in the near term. The loss of any of these distribution or
reseller relationships or our failure to develop new and viable distribution or reseller relationships could materially harm our ability to sustain and grow our net revenues. Moreover, any transition involving our distribution or reseller partners
could also have a negative impact on our operating results.



27



---

##### Table of Contents

Intense competition in our industry could prevent us from increasing net revenues and sustaining profitability.



The RF component industry is intensely competitive in each of the
markets we serve and is characterized by the following:



| |  |  | rapid technological change;
| | - |  | ---------------------------



| |  |  | rapid product obsolescence;
| | - |  | ---------------------------



| |  |  | limited number of wafer fabs for particular process technologies;
| | - |  | -----------------------------------------------------------------



| |  |  | price erosion; and
| | - |  | ------------------



| |  |  | unforeseen manufacturing yield problems.
| | - |  | ----------------------------------------



With respect to products sold in our Amplifier division, we compete primarily with other suppliers of high-performance RF components used in the infrastructure of
communications networks such as Agilent, M/A-COM, NEC and WJ Communications. For our newer broadband products, we expect our most significant competitors will include Maxim Integrated Products, Microtune, Motorola and Philips. With respect to our
Signal Source division products, our primary competitors are Alps, M/A-COM and Minicircuits. With respect to our A&D division products, our primary competitors are Hittite, Synergy, Remec and Cougar Components. We also compete with
communications equipment manufacturers, some of whom are our customers, who design RF components internally such as Ericsson, Lucent, Motorola, Nokia and Nortel Networks. We expect continuing competition both from existing competitors and from a
number of companies that may enter the RF component market, and we may see future competition from companies that may offer new or emerging technologies. In addition, future competition may come from component suppliers based in countries with lower
production costs that could translate into pricing pressures; companies that provide a more comprehensive active and passive RF component portfolio that would provide our customers with an attractive supply alternative; and IC manufacturers as they
add additional functionality at the chip level to compete with our products. Many of our current and potential competitors have significantly greater financial, technical, manufacturing and marketing resources than we have. As a result, prospective
customers may decide not to buy from us due to their concerns about our size, financial stability or ability to interact with their logistics systems. Our failure to successfully compete in our markets would have a material adverse effect on our
business, financial condition and results of operations.



If
communications equipment OEMs increase their internal production of RF components, our net revenues would decrease and our business would be harmed.



Currently, communications equipment OEMs obtain their RF components by either developing them internally or by buying RF components from third-party suppliers. We have
historically generated a majority of our net revenues through sales of components to these OEMs through our distributors and direct sales force. If communications equipment manufacturers increase their internal production of RF components and reduce
purchases of RF components from third parties, our net revenues could decrease and our business, financial condition and results of operations could be materially adversely affected.



We have a material amount of goodwill and long-lived assets, including finite-lived acquired intangible assets, which, if impaired,
could materially and adversely affect our results of operations.



We
have a material amount of goodwill, which is the amount by which the cost of an acquisition accounted for using the purchase method exceeds the fair value of the net assets acquired. Goodwill is subject to a periodic impairment evaluation based on
the fair value of the reporting unit. We also have a material amount of long-lived assets, including finite-lived acquired intangible assets recorded on our balance sheet.



These assets are evaluated for impairment whenever events or changes in circumstances indicate the carrying value of the related assets may
not be recoverable. Any impairment of our goodwill, long-lived assets, including finite-lived acquired intangible assets, could have a material adverse effect on our business, financial condition and results of operations.



Our strategic investment in GCS, a privately held semiconductor foundry, could be
further impaired or never redeemed, which could have a material adverse impact on our results of operations.



In the first quarter of 2002, we invested $7.5 million in GCS, a privately held semiconductor foundry. We regularly evaluate our investment in GCS to determine if an
other-than-temporary decline in value has occurred. Factors that may cause an other-than-temporary decline in the value of our investment in GCS would include, but not be limited to, a degradation of the general business environment in which GCS
operates, the failure of GCS to achieve certain performance milestones, a series of operating losses in excess of GCS current annual business plan, the inability of GCS to continue as a going concern or a reduced valuation as determined by a
new financing event. If we determine that an other-than-temporary decline in value has occurred, we will write-down our investment in GCS to its estimated fair value. Such a write-down could have a material adverse impact on our consolidated results
of operations in the period in which it occurs. For example, in the fourth quarter of 2004 and 2002, we wrote down the value of our investment in GCS by approximately $1.5 million and $2.9 million, respectively, after determining that GCS had
experienced an other-than-temporary decline in value.



The ultimate realization
of our investment in GCS will be dependent on the occurrence of a liquidity event for GCS, and/or our ability to sell our GCS shares, for which there is no public market. The likelihood of any of these events occurring will depend on, among other
things, market conditions surrounding the wireless communications industry and the related semiconductor foundry industry, as well as the public markets receptivity to liquidity events such as initial public offerings or merger and acquisition
activities. Even if we are able to sell these shares, the sale price may be less than the price we paid, which could materially and adversely affect our results of operations.



28



---

##### Table of Contents

If we lose our key personnel or are unable to attract and retain key personnel, we may be unable to pursue business
opportunities or develop our products.



We believe that our future
success will depend in large part upon our continued ability to recruit, hire, retain and motivate highly skilled technical, marketing and managerial personnel. Competition for these employees is significant. Our failure to retain our present
employees and hire additional qualified personnel in a timely manner and on reasonable terms could materially adversely affect our business, financial condition and results of operations. In addition, from time to time we may recruit and hire
employees from our customers, suppliers and distributors, which could damage our business relationship with these parties. Our success also depends on the continuing contributions of our senior management and technical personnel, all of whom would
be difficult to replace. The loss of key personnel could adversely affect our ability to execute our business strategy, which could have a material adverse effect on our business, financial condition and results of operations. We may not be
successful in retaining these key personnel.



The outcome of litigation
in which we have been named as a defendant is unpredictable and an adverse decision in any such matter could have a material adverse effect on our business, financial position and results of operations.



We are defendants in litigation matters that are described under the heading Legal
Proceedings in this Quarterly Report on Form 10-Q. These claims may divert financial and management resources that would otherwise be used to benefit our operations. Although we believe that we have meritorious defenses to the claims made in
each and all of the litigation matters to which we have been named a party, and intend to contest each lawsuit vigorously, no assurances can be given that the results of these matters will be favorable to us. An adverse resolution of any of these
lawsuits, including the results of any amicable settlement, could have a material adverse effect on our business, financial condition and results of operations.



Perceived risks relating to process technologies we may adopt in the future to manufacture our products could cause reluctance among potential customers to
purchase our products.



We may adopt new process technologies in the
future to manufacture our products. Prospective customers of these products may be reluctant to purchase these products based on perceived risks of these new technologies. These risks could include concerns related to manufacturing costs and yields
and uncertainties about the relative cost-effectiveness of products produced using these new technologies. If our products fail to achieve market acceptance, our business, financial condition and results of operations would be materially adversely
affected.



The timing of the adoption of industry standards may
negatively impact widespread market acceptance of our products.



The
markets in which we and our customers compete are characterized by rapidly changing technology, evolving industry standards and continuous improvements in products and services. If technologies or standards supported by us or our customers
products, such as 2.5G and 3G, fail to gain widespread commercial acceptance, our business will be significantly impacted. For example, the installation of 2.5G and 3G equipment has occurred at a much slower rate than was initially expected. In
addition, while historically the demand for wireless and wireline communications has exerted pressure on standards bodies worldwide to adopt new standards for these products, such adoption generally only occurs following extensive investigation of,
and deliberation over, competing technologies. The delays inherent in the standards approval process have in the past and may in the future cause the cancellation, postponement or rescheduling of the installation of communications systems by our
customers. If further delays in adoption of industry standards were to occur, it could result in lower sales of our products.



Recent changes in environmental laws and regulations applicable to manufacturers of electrical and electronic equipment have required us to redesign some of our
products, and may increase our costs and expose us to liability.



The
implementation of new technological or legal requirements, such as recycling requirements and lead-free initiatives, has impacted our products and solutions and manufacturing processes, and could affect the timing of product introductions, the cost
of our production or products as well as their commercial success. For example, a recent directive in the European Union bans the use of lead, other heavy metals and certain flame retardants in electrical and electronic equipment beginning in 2006.
As a result, in advance of this deadline, some of our customers selling products in Europe have begun demanding products from component manufacturers that do not contain these banned substances and have indicated that they will not design in
non-compliant components beginning in 2005. Because most of our existing IC products utilize a tin-lead alloy as a soldering material in the manufacturing process, our MCM products contain circuit boards plated with a tin-lead surface and certain
molded active components in our MCM products are molded with a banned substance, we must redesign our products and obtain compliant raw materials from our suppliers to respond to the new legislation and to meet customer demand. Although we began
this process in the first quarter of 2004 and have released many compliant products to date, we have numerous products that remain noncompliant. In addition, our industry has no long-term data to assess the effectiveness, shelf-life, moisture
sensitivity, and thermal tolerance of alternative materials, so we may experience product quality and performance issues as we transition our products to such materials.



Further, for our MCM products we rely on third party suppliers, over which we have little or no control, to provide certain of the
components needed for our products to meet applicable standards. In addition, this redesign is resulting in increased research and development and manufacturing and quality control costs. Moreover, if we are unable to successfully and timely
redesign existing products and introduce new products that meet the standards set by environmental regulation and our customers, sales of our products could decline, which could materially adversely affect our business, financial condition and
results of operations.



Another recent directive in the European Union imposes
a take-back obligation on manufacturers of electrical and electronic equipment. This obligation requires manufacturers of electrical or electronic equipment to finance the collection, recovery and disposal of the electrical or electronic
equipment that they produce. At this time, member states in the European Union have not adopted legislation implementing this directive. In addition, methods of complying with these potential take-back obligations have not been developed by our
industry. Even if the specific legislation does not directly apply to us or our products and solutions, our customers could potentially shift some of their costs to us through contractual provisions. We are unable to assess the impact of this
proposed legislation on us at this time but it could result in increased costs to us, which could materially adversely affect our business, financial condition and results of operations.



Our limited ability to protect our proprietary information and technology may adversely affect our ability to compete.



Our future success and ability to compete is dependent in part upon
our proprietary information and technology. Although we have patented technology and have patent applications pending, we primarily rely on a combination of contractual rights and copyright, trademark and trade secret laws and practices to establish
and protect our proprietary technology. We generally enter into confidentiality agreements with our employees, consultants, resellers, wafer suppliers, vendors, customers and potential customers, and strictly limit the disclosure and use of our
proprietary information. The steps taken by us in this regard may not be adequate to prevent misappropriation of our technology. Additionally, our competitors may independently develop technologies that are substantially equivalent or superior to
our technology.



Despite our efforts to protect our proprietary rights,
unauthorized parties may attempt to copy or otherwise obtain or use our products or technology. Our ability to enforce our patents, copyrights, software licenses and other intellectual property is limited by our financial resources and is subject to
general litigation risks, as well as uncertainty as to the enforceability of various intellectual property rights in various countries. If we seek to enforce our rights, we may be



29



---

##### Table of Contents

subject to claims that the intellectual property right is invalid, is otherwise not enforceable or is licensed to the party against whom we are asserting a
claim. In addition, our assertion of intellectual property rights could result in the other party seeking to assert alleged intellectual property rights of its own against us.



Our products could infringe the intellectual property rights of others, and resulting claims against us could be costly and require us
to enter into disadvantageous license or royalty arrangements.



Our
industry is characterized by the existence of a large number of patents and litigation based on allegations of patent infringement and the violation of intellectual property rights. Although we attempt to avoid infringing known proprietary rights of
third parties in our product development efforts, we may be subject to legal proceedings and claims for alleged infringement by us or our licensees of third-party proprietary rights, such as patents, trade secrets, trademarks or copyrights, from
time to time in the ordinary course of business. In addition, our sales agreements often contain intellectual property indemnities, such as patent and copyright indemnities, and our customers may assert claims against us for indemnification if they
receive claims alleging that their products infringe others intellectual property rights.



Any claims relating to the infringement of third-party proprietary rights, even if not meritorious, could result in costly litigation, divert managements attention and resources, or require us to enter into
royalty or license agreements which are not advantageous to us or pay material amounts of damages. In addition, parties making these claims may be able to obtain an injunction, which could prevent us from selling our products. We may increasingly be
subject to infringement claims as the number of our products grows.



Some
of our stockholders can exert control over us, and they may not make decisions that reflect our interests or those of other stockholders.



Our founding stockholders control a significant amount of our outstanding common stock. As a result, these stockholders are able to exert a significant degree of
influence over our management and affairs and control matters requiring stockholder approval, including the election of our directors and approval of significant corporate transactions. In addition, this concentration of ownership may delay or
prevent a change in control of us and might affect the market price of our securities. In addition, the interests of these stockholders may not always coincide with our interests or the interests of other stockholders.



Our charter and bylaws and Delaware law contain provisions that may delay or prevent a
change of control.



Provisions of our charter and bylaws may have the
effect of making it more difficult for a third party to acquire, or of discouraging a third party from attempting to acquire, control of us. These provisions could limit the price that investors might be willing to pay in the future for our
securities. These provisions include:



| |  |  | division of the board of directors into three separate classes;
| | - |  | ---------------------------------------------------------------



| |  |  | elimination of cumulative voting in the election of directors;
| | - |  | --------------------------------------------------------------



| |  |  | prohibitions on our stockholders from acting by written consent and calling special meetings;
| | - |  | ---------------------------------------------------------------------------------------------



| |  |  | procedures for advance notification of stockholder nominations and proposals; and
| | - |  | ---------------------------------------------------------------------------------



| |  |  | the ability of the board of directors to alter our bylaws without stockholder approval.
| | - |  | ---------------------------------------------------------------------------------------



In addition, our board of directors has the authority to issue up to 5,000,000 shares of preferred stock and to determine the price, rights,
preferences, privileges and restrictions, including voting rights, of those shares without any further vote or action by the stockholders. The issuance of preferred stock, while providing flexibility in connection with possible financings or
acquisitions or other corporate purposes, could have the effect of making it more difficult for a third party to acquire a majority of our outstanding voting stock. We are also subject to Section 203 of the Delaware General Corporation Law that,
subject to exceptions, prohibits a Delaware corporation from engaging in any business combination with any interested stockholder for a period of three years following the date that this stockholder became an interested stockholder. The preceding
provisions of our charter and bylaws, as well as Section 203 of the Delaware General Corporation Law, could discourage potential acquisition proposals, delay or prevent a change of control and prevent changes in our management.



|Item 3. | Quantitative and Qualitative Disclosures About Market Risk
|------- | ----------------------------------------------------------



Although 70% of our sales were to non-U.S. based customers and distributors in the first quarter of 2005, all sales continue to be
denominated in U.S. dollars. As a result, we have not had any material exposure to factors such as changes in foreign currency exchange rates. We expect sales into foreign markets to continue at current levels or increase in future periods,
particularly in Europe and Asia. Because Sirenzas sales are denominated in U.S. dollars, a strengthening of the U.S. dollar could make its products less competitive in foreign markets. Alternatively, if the U.S. dollar were to weaken, it would
make our products more competitive in foreign markets, but could result in higher prices from our foreign vendors.



At March 31, 2005, our cash and cash equivalents consisted primarily of bank deposits, federal agency and related securities and money market funds issued or managed by
large financial institutions in the United States. We did not hold any derivative financial instruments. Our interest income and expense are sensitive to changes in the general level of interest rates. In this regard, changes in interest rates can
affect the interest earned on our cash equivalents and available-for-sale investments. For example, assuming that our cash and available-for-sale investments balance at March 31, 2005 remains unchanged, a one percent increase or decrease in interest
rates would increase or decrease Sirenzas annual interest income by approximately $110,000.



30



---

##### Table of Contents

|Item 4. | Controls and Procedures
|------- | -----------------------



Evaluation of Disclosure Controls and Procedures



Our management evaluated, with the participation of our Chief Executive Officer and our Chief Financial Officer, the effectiveness of our disclosure controls and
procedures as of the end of the period covered by this Quarterly Report on Form 10-Q. Based on this evaluation, our Chief Executive Officer and our Chief Financial Officer have concluded that our disclosure controls and procedures are effective to
ensure that information we are required to disclose in reports that we file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission
rules and forms.



Changes in Internal Control Over Financial Reporting



There was no change in our internal control over financial reporting
that occurred during the period covered by this Quarterly Report on Form 10-Q that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting



Part II. Other Information



|Item 1. | Legal Proceedings
|------- | -----------------



In November 2001, we, various officers and certain underwriters of the Companys initial public offering of securities were named in a purported class action lawsuit filed in the United States District Court for
the Southern District of New York. The suit, In re Sirenza Microdevices, Inc. Initial Public Offering Securities Litigation, Case No. 01-CV-10596, alleges improper and undisclosed activities related to the allocation of shares in our initial public
offering, including obtaining commitments from investors to purchase shares in the aftermarket at pre-arranged prices. Similar lawsuits concerning more than 300 other companies initial public offerings were filed during 2001, and this lawsuit
is being coordinated with those actions (the coordinated litigation). Plaintiffs filed an amended complaint on or about April 19, 2002, bringing claims for violation of several provisions of the federal securities laws and seeking an
unspecified amount of damages. On or about July 1, 2002, an omnibus motion to dismiss was filed in the coordinated litigation on behalf of the issuer defendants, of which we and our named officers and directors are a part, on common pleadings
issues. On October 8, 2002, pursuant to stipulation by the parties, the court dismissed the officer and director defendants from the action without prejudice. On February 19, 2003, the court granted in part and denied in part a motion to dismiss
filed on behalf of defendants, including us. The courts order dismissed all claims against us except for a claim brought under Section 11 of the Securities Act of 1933.



In June 2004, a stipulation of settlement and release of claims against the issuer defendants, including us, was submitted to the court for
approval. The terms of the settlement, if approved, would dismiss and release all claims against the participating defendants (including us). In exchange for this dismissal, D&O insurance carriers would agree to guarantee a recovery by the
plaintiffs from the underwriter defendants of at least $1 billion, and the issuer defendants would agree to an assignment or surrender to the plaintiffs of certain claims the issuer defendants may have against the underwriters. The settlement is
subject to a number of conditions, including court approval. If the settlement does not occur, and litigation against us continues, we believe we have meritorious defenses and intend to defend the case vigorously.



On April 16, 2003, Scientific Components Corporation d/b/a Mini-Circuits Laboratory
(Mini-Circuits) filed a complaint against us in the United States District Court for the Eastern District of New York alleging, among other things, breach of warranty by us for alleged defects in certain goods sold to Mini-Circuits.
Mini-Circuits seeks compensatory damages plus interest, costs and attorneys fees. On July 30, 2003, we filed an answer to the complaint and asserted counterclaims against Mini-Circuits. Even though we believe Mini-Circuits claims to be
without merit and we intend to defend the case and assert our claims vigorously, if we ultimately lose or settle the case, we may be liable for monetary damages and other costs of litigation. Even if we are entirely successful in the lawsuit, we may
incur significant legal expenses and our management may expend significant time in the defense.



On August 11, 2003, OneSource Financial Corp. filed a complaint against us and John and Susan Ocampo in the District Court for Travis County, Texas. Sirenza was served with the complaint on September 15, 2003 and
filed its answer on October 16, 2003. The complaint alleges breach of contract by Sirenza and breach of guaranty by John and Susan Ocampo with respect to an equipment lease entered into in 1999. OneSource alleges that the terms of the lease provided
for an automatic renewal of the lease upon expiration of the original term in April 2003 and seeks additional monthly rental payments on the equipment in addition to a fair market value buyout of the equipment, accrued interest, liquidated damages
and attorneys fees. Sirenza believes OneSources claims for breach of contract to be without merit and we intend to defend the case vigorously. However, if we ultimately lose or settle the case, we may be liable for the amounts claimed by
OneSource and other costs of litigation. Even if we are entirely successful in the lawsuit, we may incur significant legal expenses and our management may expend significant time in the defense.



In addition, we currently are involved in litigation and regulatory proceedings incidental to
the conduct of our business and expect that we will be involved in other litigation and regulatory proceedings from time to time. While we currently believe that an adverse outcome with respect to such pending matters would not materially affect our
business or financial condition, there can be no assurance that this will ultimately be the case.



|I
tem 2. | Unregistered Sales of Equity Securities and Use of Proceeds
|-------- | -----------------------------------------------------------



The effective date of our Registration Statement filed on Form S-1 under the Securities Act of 1933 (File No. 333-31382), relating to our initial public offering of our
common stock was May 24, 2000. Public trading commenced on May 25, 2000. The offering closed on May 31, 2000. The managing underwriters of the public offering were Deutsche Banc Alex. Brown, Banc of America Securities LLC, CIBC World Markets and
Robertson Stephens. In the offering (including the exercise of the underwriters overallotment option on June 16, 2000), we sold an aggregate of 4,600,000 shares of our common stock for an initial price of $12.00 per share.



The aggregate proceeds from the offering were $55.2 million. We paid expenses of
approximately $5.4 million, of which approximately $3.9 million represented underwriting discounts and commissions and approximately $1.5 million represented expenses related to the offering. Net proceeds from the offering were approximately $49.8
million. As of March 31, 2005 approximately $47.9 million of the net proceeds have been used to purchase property and equipment, make capital lease payments, fund our operating activities, and fund our acquisitions of Xemod, Vari-L and ISG and
investment in GCS. The remaining $1.9 million of net proceeds have been invested in interest bearing cash equivalents and investments.



31



---

##### Table of Contents

|Ite
m 3. | Defaults Upon Senior Securities
|-------- | -------------------------------



None



|Item 4. | Submission of Matters to a Vote of Security Holders
|------- | ---------------------------------------------------



None



|Ite
m 5. | Other Information
|-------- | -----------------



None



|Ite
m 6. | Exhibits and Reports on Form 8-K
|-------- | --------------------------------



| | (a) | Exhibits:
| | --- | ---------



|              |   |  |                                                                                                                                                                                                                                                                                    
|------------- | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |   |  | Description                                                                                                                                                                                                                                                                        
|              |  
|2.1           |   |  | Asset Purchase Agreement, by and among Registrant, Olin Acquisition Corporation, and Vari-L Company, Inc., dated as of December 2, 2002. (1)                                                                                                                                       
|              |  
|2.2           |   |  | Agreement and Plan of Reorganization, by and among Registrant, Xavier Merger Sub, Inc. and Xemod Incorporated, dated as of August 15, 2002. (2)                                                                                                                                    
|              |  
|2.3           |   |  | Agreement and Plan of Reorganization, by and among Registrant, ISG Broadband, Inc., Comet Acquisition Corporation, California Eastern Laboratories, U.S. Bank, N.A, as escrow agent and
California Eastern Laboratories, as securityholder agent, dated as of December 7, 2004. (3)
|              |  
|3.1           |   |  | Restated Certificate of Incorporation of Registrant. (4)                                                                                                                                                                                                                           
|              |  
|3.2           |   |  | Certificate of Ownership and Merger of SMDI Sub, Inc. into Stanford Microdevices, Inc. (effecting corporate name change of Registrant to Sirenza Microdevices, Inc.).
(5)                                                                                                        
|              |  
|3.3           |   |  | Bylaws of Registrant, as amended, as currently in effect. (6)                                                                                                                                                                                                                      
|              |  
|4.1           |   |  | Form of Registrants Common Stock certificate. (7)                                                                                                                                                                                                                                 
|              |  
|4.2           |   |  | Registration Rights Agreement, by and among Registrant and the parties named therein, dated as of January 30, 2004. (7)                                                                                                                                                            
|              |  
|10.1          | * |  | Executive Employment Agreement effective as of March 1, 2005 and related letter agreements dated February 7, 2005, each by and between Sirenza Microdevices, Inc. and Clay Simpson.
(8)                                                                                            
|              |  
|11.1          |   |  | Statement regarding computation of per share earnings. (9)                                                                                                                                                                                                                         
|              |  
|31.1          |   |  | Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                
|              |  
|31.2          |   |  | Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                
|              |  
|32.1          |   |  | Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                
|              |  
|32.2          |   |  | Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                



|* | Management contract or compensation plan or arrangement in which directors and/or executive officers are eligible to participate.
|- | ---------------------------------------------------------------------------------------------------------------------------------



|(1) | This exhibit is incorporated by reference to the Registrants Registration Statement on Form S-4 and all amendments thereto, Registration No. 333-102099, initially filed with
the Securities and Exchange Commission on December 20, 2002.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | This exhibit is incorporated by reference to the Registrants Current Report on Form 8-K dated September 11, 2002, filed with the Securities and Exchange Commission on
September 25, 2002.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



32



---

##### Table of Contents

|(3) | This exhibit is incorporated by reference to the Registrants Current Report on Form 8-K dated December 7, 2004, filed with the Securities and Exchange Commission on December
10, 2004.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(4) | This exhibit is incorporated by reference to the Registrants Registration Statement on Form S-1 and all amendments thereto, Registration No. 333-31382, initially filed with
the Securities and Exchange Commission on March 1, 2000.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(5) | This exhibit is incorporated by reference to the Registrants Annual Report on Form 10-K for its fiscal year ended December 31, 2001, filed with the Securities and Exchange
Commission on March 27, 2002.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(6) | This exhibit is incorporated by reference to the Registrants Annual Report on Form 10-K for its fiscal year ended December 31, 2000, filed with the Securities and Exchange
Commission on March 29, 2001.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(7) | This exhibit is incorporated by reference to the Registrants Registration Statement on Form S-3 and all amendments thereto, Registration No. 333-112382, initially filed with
the Securities and Exchange Commission on January 30, 2004.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(8) | This exhibit is incorporated by reference to the Registrants Current Report on Form 8-K dated February 7, 2005, filed with the Securities and Exchange Commission on February
11, 2005.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(9) | This exhibit has been omitted because the information is shown in the Consolidated Financial Statements or Notes thereto.
|--- | -------------------------------------------------------------------------------------------------------------------------



33



---

##### Table of Contents



SIGNATURES



Pursuant to the requirements of the
Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



|                  |  |  |  |                                                                         
|----------------- |  |  |  | ------------------------------------------------------------------------
|DATE: May 6, 2005 |  |  |  | SIRENZA MICRODEVICES, INC.                                              
|                  |  | 
|                  |  |  |  | /s/ Robert Van Buskirk                                                  
|                  |  |  |  | ROBERT VAN BUSKIRK                                                      
|                  |  |  |  | President, Chief Executive Officer and Director                         
|                  |  | 
|DATE: May 6, 2005 |  |  |  | /s/ Thomas J. Scannell                                                  
|                  |  |  |  | THOMAS J. SCANNELL                                                      
|                  |  |  |  | Vice President, Finance, Chief Financial Officer and Assistant Treasurer



34



---

##### Table of Contents

EXHIBIT INDEX



|              |   |  |                                                                                                                                                                                                                                                                                    
|------------- | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|ExhibitNumber |   |  | Description                                                                                                                                                                                                                                                                        
|              |  
|2.1           |   |  | Asset Purchase Agreement, by and among Registrant, Olin Acquisition Corporation, and Vari-L Company, Inc., dated as of December 2, 2002. (1)                                                                                                                                       
|              |  
|2.2           |   |  | Agreement and Plan of Reorganization, by and among Registrant, Xavier Merger Sub, Inc. and Xemod Incorporated, dated as of August 15, 2002. (2)                                                                                                                                    
|              |  
|2.3           |   |  | Agreement and Plan of Reorganization, by and among Registrant, ISG Broadband, Inc., Comet Acquisition Corporation, California Eastern Laboratories, U.S. Bank, N.A, as escrow agent and
California Eastern Laboratories, as securityholder agent, dated as of December 7, 2004. (3)
|              |  
|3.1           |   |  | Restated Certificate of Incorporation of Registrant. (4)                                                                                                                                                                                                                           
|              |  
|3.2           |   |  | Certificate of Ownership and Merger of SMDI Sub, Inc. into Stanford Microdevices, Inc. (effecting corporate name change of Registrant to Sirenza Microdevices, Inc.).
(5)                                                                                                        
|              |  
|3.3           |   |  | Bylaws of Registrant, as amended, as currently in effect. (6)                                                                                                                                                                                                                      
|              |  
|4.1           |   |  | Form of Registrants Common Stock certificate. (7)                                                                                                                                                                                                                                 
|              |  
|4.2           |   |  | Registration Rights Agreement, by and among Registrant and the parties named therein, dated as of January 30, 2004. (7)                                                                                                                                                            
|              |  
|10.1          | * |  | Executive Employment Agreement effective as of March 1, 2005 and related letter agreements dated February 7, 2005, each by and between Sirenza Microdevices, Inc. and Clay Simpson.
(8)                                                                                            
|              |  
|11.1          |   |  | Statement regarding computation of per share earnings. (9)                                                                                                                                                                                                                         
|              |  
|31.1          |   |  | Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                
|              |  
|31.2          |   |  | Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                
|              |  
|32.1          |   |  | Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                
|              |  
|32.2          |   |  | Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                



|* | Management contract or compensation plan or arrangement in which directors and/or executive officers are eligible to participate.
|- | ---------------------------------------------------------------------------------------------------------------------------------



|(1) | This exhibit is incorporated by reference to the Registrants Registration Statement on Form S-4 and all amendments thereto, Registration No. 333-102099, initially filed with
the Securities and Exchange Commission on December 20, 2002.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | This exhibit is incorporated by reference to the Registrants Current Report on Form 8-K dated September 11, 2002, filed with the Securities and Exchange Commission on
September 25, 2002.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | This exhibit is incorporated by reference to the Registrants Current Report on Form 8-K dated December 7, 2004, filed with the Securities and Exchange Commission on December
10, 2004.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(4) | This exhibit is incorporated by reference to the Registrants Registration Statement on Form S-1 and all amendments thereto, Registration No. 333-31382, initially filed with
the Securities and Exchange Commission on March 1, 2000.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(5) | This exhibit is incorporated by reference to the Registrants Annual Report on Form 10-K for its fiscal year ended December 31, 2001, filed with the Securities and Exchange
Commission on March 27, 2002.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(6) | This exhibit is incorporated by reference to the Registrants Annual Report on Form 10-K for its fiscal year ended December 31, 2000, filed with the Securities and Exchange
Commission on March 29, 2001.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(7) | This exhibit is incorporated by reference to the Registrants Registration Statement on Form S-3 and all amendments thereto, Registration No. 333-112382, initially filed with
the Securities and Exchange Commission on January 30, 2004.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(8) | This exhibit is incorporated by reference to the Registrants Current Report on Form 8-K dated February 7, 2005, filed with the Securities and Exchange Commission on February
11, 2005.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(9) | This exhibit has been omitted because the information is shown in the Consolidated Financial Statements or Notes thereto.
|--- | -------------------------------------------------------------------------------------------------------------------------