| 摘要 |
PROBLEM TO BE SOLVED: To realize an antenna switch mechanism for effectively and economically sharing a diversity antenna. SOLUTION: An antenna switch circuit is applied to multi-transceiver mobile terminal equipment 10. In the operation mode of a 2nd transceiver 12, a 2nd antenna port PA2 is connected to a 2nd transceiver I/O port PI/O and a 1st transceiver port P1 is disconnected from a 2nd port. In the transmission mode of a 1st transceiver 11, the 1st transceiver port P1 is connected to a 1st antenna port PA1 and the 2nd transceiver I/O port PI/O is disconnected from the 2nd antenna port PA2. When the 2nd transceiver I/O port PI/O is disconnected from the 2nd port in a 1st transceiver receiving mode, the 1st transceiver port P1 is connected to either one of the 1st and 2nd antenna ports PA1, PA2.
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