| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein a conventional switch circuit requires a large chip. SOLUTION: A switch circuit 1 comprises capacitors 12, 14, an inductor 20, and a unit circuit having an FET 30 (switching element). The capacitors 12, 14 are provided in a path P1 (first path) for connecting I/O terminals 92, 94. The capacitors 12, 14 are connected in series each other. The path P2 (second path) is connected to the path P1. In the second path P2, the inductor 20 and the FET 30 are connected in series mutually. Concretely, one end of the inductor 20 is connected to a connection point N, and the other of the inductor 20 is connected to the source or drain of the FET 30. The drain or source of the FET 30 is grounded. COPYRIGHT: (C)2007,JPO&INPIT
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