Exhibit 4.1

                      FOURTH AMENDMENT TO RIGHTS AGREEMENT

     This Fourth  Amendment,  dated as of November 10, 2009  ("Amendment"),  and
effective as of the date set forth below,  amends that certain Rights Agreement,
dated as of December 20, 1994 (as amended,  "Rights  Agreement"),  as amended on
August 14, 1996 ("First Amendment"), December 11, 2000 ("Second Amendment" ) and
December 17, 2004 ("Third  Amendment," and together with the First Amendment and
Second  Amendment,  the "Former  Amendments"),  between RF Monolithics,  Inc., a
Delaware  corporation (the "Company"),  and  Computershare  Trust Company,  N.A.
(formerly known as EquiServe Trust Company,  N.A. and successor  rights agent to
Fleet National Bank) ("Rights Agent").

     WHEREAS,  the Company and the  predecessor of the Rights Agent entered into
the Rights Agreement specifying the terms of the Rights (as defined therein);

     WHEREAS,  pursuant  to  Section  27 of the Rights  Agreement,  the  Company
desires to amend the Rights Agreement as set forth below;

     WHEREAS, the Board of Directors of the Company has approved this Amendment.

     NOW, THEREFORE,  in consideration of the premises and the mutual agreements
herein set forth, the parties hereby agree as follows:

     Section 1. Certain Definitions. For purposes of this Amendment, capitalized
terms not  otherwise  defined  shall have the  meaning  given them in the Rights
Agreement.

     Section 2. Amendment. The Rights Agreement is hereby amended as follows:

            (a) Clause (i) of Section 7(a) of the Rights Agreement is hereby
      amended by deleting "December 20, 2009" contained therein and inserting in
      lieu thereof "December 20, 2014."

            (b) Section 2 of the Rights Agreement is hereby amended by deleting
      from the first sentence thereof the language "and the holders of the
      Rights (who, in accordance with Section 3 hereof, shall prior to the
      Distribution Date also be the holders of the Common Shares)".

            (c) Section 5 of the Rights Agreement is hereby amended by deleting
      from the second sentence thereof the language "manually countersigned" and
      replacing it in its entirety with the language "countersigned, either
      manually or by facsimile signature".

            (d) Section 7(b) of the Rights Agreement is hereby amended by
      deleting "$74.40" contained therein and inserting in lieu thereof
      "$10.00."

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            (e) Section 26 of the Rights Agreement is hereby amended by deleting
      the Rights Agent notice information in its entirety and replacing it with
      the following:

                 Computershare Trust Company, N.A.
                 250 Royall Street
                 Canton, MA  02066
                 Attention: Client Services

     Section 3. Date of Effectiveness.  This Amendment shall be deemed effective
as of November 10, 2009, as if executed by both parties hereto on such date.

     Section 4. Effect of Amendment.  Except as expressly  amended hereby and by
the Former  Amendments,  the  Rights  Agreement  shall  remain in full force and
effect.

     Section 5. Severability. If any term, provision, covenant or restriction of
this Amendment is held by a court of competent  jurisdiction  or other authority
to be invalid,  void or unenforceable,  the remainder of the terms,  provisions,
covenants  and  restrictions  of this  Amendment  shall remain in full force and
effect and shall in no way be affected, impaired or invalidated.

     Section 6. Governing Law. This Amendment and each Right Certificate  issued
hereunder  shall be deemed to be a contract  made under the laws of the State of
Delaware and for all purposes  shall be governed by and  construed in accordance
with the laws of such State  applicable  to contracts  to be made and  performed
entirely within such State.

     Section 7.  Counterparts.  This  Amendment may be executed in any number of
counterparts and each of such  counterparts  shall for all purposes be deemed to
be an original,  and all such counterparts shall together constitute but one and
the same instrument.  A signature to this Amendment  transmitted  electronically
shall  have  the same  authority,  effect,  and  enforceability  as an  original
signature.

     Section  8.  Descriptive  Headings.  Descriptive  headings  of the  several
Sections of this  Amendment  are  inserted  for  convenience  only and shall not
control or affect the meaning or construction of any of the provisions hereof.

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     IN WITNESS  WHEREOF,  parties  hereto have caused this Amendment to be duly
executed and effective as of the date set forth above.


                                         RF MONOLITHICS, INC.

                                         By:  /s/ Harley E Barnes III
                                            ------------------------------
                                            Harley E Barnes III
                                            Chief Financial Officer


                                         COMPUTERSHARE TRUST
                                         COMPANY, N.A.

                                         By:    /s/ Dennis V. Moccia
                                                --------------------
                                         Name:  Dennis V. Moccia
                                                ----------------
                                         Title: Manager, Contract Administration
                                                --------------------------------