Radio-frequency switching circuit and semiconductor device

Details Radio-frequency switching circuit and semiconductor device Radio-frequency switching circuit and semiconductor device

2006-11-02

2009-02-17

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S101000

Reexamination Certificate

active

07492238

ABSTRACT:
A common terminal500is connected to drains of FETs101and102via a capacitor400.FETs111to114are serially connected, and inserted between a source of the FET101and a terminal501via a capacitor401.Similarly, each of: FETs121to124;FETs131to133;FETs141to143;FETs151to153;and FETs161to163is inserted between the source of the FET101or an FET102and a corresponding one of terminals502to506.This configuration allows a stray capacitance value of a transmission/reception path to be reduced at the time of transmission/reception, thereby obtaining a favorable radio-frequency characteristic.

REFERENCES:
patent: 7295814 (2007-11-01), Yamashita et al.
patent: 7307490 (2007-12-01), Kizuki et al.
patent: 9-238059 (1997-09-01), None

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