<PAGE> 1
EXHIBIT D
JOINT FILING AGREEMENT
The undersigned hereby agree that the Statement on Schedule
13D, dated October 23, 2000 ("Schedule 13D"), with respect to the shares of
common stock, par value $0.01 per share of Microwave Power Devices, Inc. is, and
any amendments thereto executed by each of us shall be, filed on behalf of each
of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under
the Securities and Exchange Act of 1934, as amended, and that this Agreement
shall be included as an Exhibit to the Schedule 13D and each such amendment.
Each of the undersigned agrees to be responsible for the timely filing of the
Schedule 13D and any amendments thereto, and for the completeness and accuracy
of the information concerning itself contained therein. This Agreement may be
executed in any number of counterparts, all of which taken together shall
constitute one and the same instrument.
IN WITNESS WHEREOF, the undersigned have executed this
Agreement dated October 23, 2000.
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
/s/ Rolf Eriksson
--------------------------------------------
Name: Rolf Eriksson
Title: Vice President
ERICSSON INC.
/s/ Lawrence F. Lyles
--------------------------------------------
Name: Lawrence F. Lyles
Title: Vice President and General Counsel
ERICSSON MPD ACQUISITION CORP.
/s/ Lawrence F. Lyles
--------------------------------------------
Name: Lawrence F. Lyles
Title: President and Chairman
