| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission and reception control circuit capable of obtaining a balanced output with high degree of balance and an excellent transmission characteristic by providing a correction circuit for the degree of balance in the transmission and reception control circuit. SOLUTION: In this transmission and reception control circuit 3 for performing connection processing between an antenna 4 and a receiving circuit 3, and between the transmitting circuit and the antenna 4 by selectively controlling a transmission/reception signal, an impedance matching circuit 15, a filter circuit 11, an unbalance-balance converting circuit 12 and a degree of balance correction circuit 13 are arranged. COPYRIGHT: (C)2004,JPO
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