EXHIBIT 32.2 CERTIFICATION OF PERIODIC REPORT I, William A. Priddy, Jr., Chief Financial Officer of RF Micro Devices, Inc. (the "Company"), certify pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that: (1) the Quarterly Report on Form 10-Q of the Company for the quarterly period ended June 30, 2003 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /S/ WILLIAM A. PRIDDY, JR. ----------------------------- WILLIAM A. PRIDDY, JR. Chief Financial Officer and Corporate Vice President of Administration August 12, 2003