| 摘要 |
PROBLEM TO BE SOLVED: To provide antenna switching circuit arrangement with a small amount of the leakage of transmission signals to a reception signal terminal in transmission. SOLUTION: The antenna switching circuit arrangement comprises an antenna terminal 2, a transmission signal terminal 3 connected to the antenna terminal 2 via a first switch element 5 for performing on-operation only in transmission, and the reception signal terminal 4. A ground capacity electrode that opposes a first ground electrode is connected to the connection of the first switch element 5 in the antenna terminal 2 via first wiring 12, the reception signal terminal is connected to the halfway of first wiring via a strip line and second wiring, the first ground electrode is connected to the connection to the second wiring in the reception signal terminal via the second switch element for performing the on-operation only in transmission and third wiring, and the first ground electrode is connected to the second ground electrode that opposes it via fourth wiring. COPYRIGHT: (C)2006,JPO&NCIPI
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