A high-frequency switch circuit common to a plurality of frequency bands includes a first high-frequency switch adapted to pass transmission signals and block received signals; and a demultiplexer. The high-frequency switch circuit passes one of the received signals of first and second frequency bands and blocks the other.
This is a division of application Ser. No. 09/914,448, filed Aug. 28, 2001 now U.S. Pat. No. 7,003,312 and allowed on Jun. 24, 2005, which was the National Stage of International Application No. PCT/JP00/09435 filed Dec. 28, 2000 under 35 U.S.C. .sctn. 371, which claims the benefit of Japanese Application No. 11-372747, filed Dec. 28, 1999, which are incorporated herein by reference.