| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna switch module that contributes to downsizing and weight reduction without losing the stability of operation of a mobile communication unit. SOLUTION: Since an antenna switch 20 requires no external provision of a diplexer DP and coupling capacitors C3, C8, the mount area of a dual bind unit 100 on which the antenna 20 is mounted can be reduced. Furthermore, since the coupling capacitors C3, C8 can be properly changed and the impedance matching between switch circuits SW1, SW2 of the antenna switch 20 single body and the diplexer DP can properly be taken, the high frequency characteristic of the dual band unit 100 can be stabilized. Accordingly, the antenna switch 20 contributes to downsizing and weight reduction without losing the stability of the operation of the dual band unit 100 coping with different frequency bands.
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