Patent ID: 6563396
Filing Date: 2003-05-13
Classification: H03H

Abstract:
A composite high frequency component comprising:a diplexer which accepts transmitted signals from a plurality of signal paths at a time of transmission, and delivers received signals to the plurality of signal paths at a time or reception; a plurality of high frequency switches dividing the plurality of signal paths, respectively, into transmission sections and reception sections; a high frequency filter connected in at least one of the signal paths; a surface acoustic wave filter connected to a respective one of the reception sections at the rear of the corresponding high frequency switch; and a multi-layer substrate comprising a plurality of laminated sheet layers in which the diplexer, the high frequency switches, the high frequency filter, and the surface acoustic wave filter are interconnected, the multi-layer substrate having a top surface and a bottom surface; wherein the multi-layer substrate includes a ground electrode formed on one of said sheet layers adjacent to the bottom surface of the multi-layer substrate, and the surface acoustic wave filter is mounted on the top surface of the multi-layer substrate.