**EXHIBIT 31.2**

 

**CERTIFICATION PURSUANT TO RULE 13a-14(a) OR15d-14(a) OF THE EXCHANGE ACT, AS ADOPTED PURSUANT TO SECTION 302 OF THESARBANES-OXLEY ACT OF 2002**

I, William A.Priddy, Jr., certify that:

1.      I havereviewed this quarterly report on Form 10-Q of RF Micro Devices, Inc.;2.      Based on my knowledge, this report does not contain any untruestatement of a material fact or omit to state         a material  fact necessary to make the statements made, in light of thecircumstances under which such         statements were made, not  misleading with respect to the period covered by this report; 3.      Based on my knowledge, the financial statements, and other financialinformation included in this report, fairly         present in all material respects the financial condition, results ofoperations and cash flows of the registrant as         of, and for, the periods presented in this report; 4.      The registrant's other certifying officer(s) and I are responsible forestablishing and maintaining disclosure         controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) andinternal control         over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for theregistrant         and have:         a)     Designed such disclosure controls and procedures, or causedsuch disclosure controls and procedures to be                  designed under our supervision, to ensure that materialinformation relating to the registrant, including its                   consolidated subsidiaries, is made known to us by otherswithin those entities, particularly during the period                 in which this report is being prepared;

         b)    Designed such internal control over financial reporting, or caused suchinternal control over financial                 reporting to be designed under our supervision, to provide reasonableassurance regarding the reliability                 of financial reporting and the preparation of financial statements forexternal purposes in accordance with                 generally accepted accounting principles;         c)     Evaluated the effectiveness of the registrant's disclosurecontrols and procedures and presented in this report                 our conclusions about the effectiveness of the disclosurecontrols and procedures, as of the end of the                 period covered by this report based on such evaluation; and         d)     Disclosed in this report any change in the registrant'sinternal control over financial reporting that occurred                 during the registrant's most recent fiscal quarter (the registrant'sfourth fiscal quarter in the case of an annual                 report) that has materially affected, or is reasonably likely tomaterially affect, the registrant's internal                 control over financial reporting; and5.      The registrant's other certifying officer(s) and I have disclosed,based on our most recent evaluation of internal         control over financial reporting, to the registrant's auditors and the auditcommittee of the registrant's board         of directors (or persons performing the equivalent functions):         a)     All significant deficiencies and material weaknesses in thedesign or operation of internal control over                 financial reporting which are reasonably likely to adversely affect theregistrant's ability to record,                 process, summarize and report financial information; and         b)     Any fraud, whether or not material, that involves management orother employees who have a                 significant role in the registrant's internal control over financial reporting. 

           Date:  November 6, 2008

                                                                                    /s/William A. Priddy, Jr.                                                                                                  WilliamA. Priddy, Jr.                                                                                          Chief Financial Officer, Corporate Vice                                                                                           Presidentof Administration and Secretary

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