Exhibit 99.1


      CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

        I, Tamer Husseini, certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the
Quarterly Report of Celeritek, Inc. on Form 10-Q for the quarterly period ended
June 30, 2002 fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934 and that information contained in such
Quarterly Report fairly presents in all material respects the financial
condition and results of operations of Celeritek, Inc.


        By:      /s/  TAMER HUSSEINI
                 -------------------------------
        Name:    Tamer Husseini
        Title:   Chief Executive Officer


        I, Margaret Smith, certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the
Quarterly Report of Celeritek, Inc. on Form 10-Q for the quarterly period ended
June 30, 2002 fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934 and that information contained in such
Quarterly Report fairly presents in all material respects the financial
condition and results of operations of Celeritek, Inc.

        By:      /s/  MARGARET E. SMITH
                 -------------------------------
        Name:    Margaret E. Smith
        Title:   Chief Financial Officer