| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multiband antenna switch module capable of sharing at least three communication systems. SOLUTION: The multiband antenna switch module has a plurality of antenna terminals, a switch circuit for switching between a path common to a plurality of transmission systems and a path common to a plurality of reception systems, and first/second branching circuits connected to the switch circuit. The first branching circuit is connected to first/second transmitting terminals respectively via a high-frequency amplifier circuit and a filter circuit. The second branching circuit is connected to first/second receiving terminals respectively via the filter circuit. Each filter circuit is connected between a plurality of the antenna terminals and the switch circuit. A coupler circuit or a distribution circuit is connected between the filter circuit connected to one of the antenna terminals and the switch circuit. The coupler circuit or the distribution circuit is connected to a third transceiving terminal. COPYRIGHT: (C)2007,JPO&INPIT
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