EXHIBIT A --------- Agreement of Joint Filing ------------------------- The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of Metawave Communications Corporation shall be filed on behalf of...

                                                                   Page 19 of 21


                                   EXHIBIT A
                                   ---------


                           Agreement of Joint Filing
                           -------------------------

     The undersigned hereby agree that a single Schedule 13G (or any amendment
thereto) relating to the Common Stock of Metawave Communications Corporation
shall be filed on behalf of each of the undersigned and that this Agreement
shall be filed as an exhibit to such Schedule 13G.

Dated: February 14, 2001


XXXXX XXXXX FUND IV L.P.               /s/ Xxxx X. Xxxxxxx
                                       -------------------
By SRB ASSOCIATES IV L.P.,             Signature
Its General Partner

                                       Xxxx X. Xxxxxxx
                                       General Partner


SRB ASSOCIATES IV L.P.                 /s/ Xxxx X. Xxxxxxx
                                       -------------------
                                       Signature

                                       Xxxx X. Xxxxxxx
                                       General Partner


XXXXX XXXXX FUND V L.P.                /s/ Xxxx X. Xxxxxxx
                                       -------------------
By SRB ASSOCIATES V L.P.,              Signature
Its General Partner

                                       Xxxx X. Xxxxxxx
                                       General Partner


XXXXX XXXXX V AFFILIATES FUND L.P.     /s/ Xxxx X. Xxxxxxx
                                       -------------------
By SRB ASSOCIATES V L.P.,              Signature
Its General Partner

                                       Xxxx X. Xxxxxxx
                                       General Partner


SRB ASSOCIATES V L.P.                  /s/ Xxxx X. Xxxxxxx
                                       -------------------
                                       Signature

                                       Xxxx X. Xxxxxxx
                                       General Partner


                                                                   Page 20 of 21

XXX X. XXXXXXX                /s/ Xxxx X. Xxxxxxx
                              -------------------
                              Signature

                              Xxxx X. Xxxxxxx
                              Attorney-In-Fact


XXXXXXX X. XXX                /s/ Xxxx X. Xxxxxxx
                              -------------------
                              Signature

                              Xxxx X. Xxxxxxx
                              Attorney-In-Fact


XXXXXXX X. DOMENIK            /s/ Xxxx X. Xxxxxxx
                              -------------------
                              Signature

                              Xxxx X. Xxxxxxx
                              Attorney-In-Fact


XXXX X. XXXXXXX               /s/ Xxxx X. Xxxxxxx
                              -------------------
                              Signature


XXXXXXX X. XXXXXX             /s/ Xxxx X. Xxxxxxx
                              -------------------
                              Signature

                              Xxxx X. Xxxxxxx
                              Attorney-In-Fact


XXXXXXXX XXXX XXXXXXX         /s/ Xxxx X. Xxxxxxx
                              -------------------
                              Signature

                              Xxxx X. Xxxxxxx
                              Attorney-In-Fact