POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby authorizes
Rainer Growitz and Joan Coffman of WJ Communications Inc.
(the "Company"), singularly, to execute for and on behalf of the
undersigned, in the undersigned's capacity as a Director or Officer
of the Company, Forms 3, 4 and 5, and any amendments thereto, and
cause such form(s) to be filed with the United States Securities
and Exchange Commission pursuant to Section 16(a) of the Securities
Act of 1934, relating to the undersigned's beneficial ownership of
securities in the Company.  The undersigned hereby grants to each
such attorney-in-fact full power and authority to do and perform
any and every act and thing whatsoever requisite, necessary, or
proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do
or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges
that the foregoing attorneys-in-fact, in serving in such capacity
at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4 and 5 with
respect to the undersigned's holdings of, and transactions in,
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing
attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has cause this Power of
Attorney to be executed as of this 28th day of April, 2003.

/s/ James A. Mravca