High-frequency switch

Details High-frequency switch High-frequency switch

2006-07-12

2008-08-12

Tran, Anh Q (Department: 2819)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S032000, C333S103000

Reexamination Certificate

active

07411471

ABSTRACT:
A high-frequency switch operating in a millimeter wave band that includes a signal path having a λ/4 transmission path, for part of two or more branch signal paths that branch from an input connection path via a branch point; an FET, which is shunt-connected between a grounding end and the branch signal paths that are positioned between the λ/4 transmission path and a terminal end, as viewed from the branch point, and used to connect or disconnect the branch signal paths and the grounding end; an output matching circuit, which is positioned on the branch signal paths that are positioned between a terminal end and a connection point for the FET as viewed from the branch point, and includes a shunt-connected stub; and a matching FET, which is connected between the stub and the grounding end and used to connect or disconnect the stub and the grounding end in accordance with the FET's connection/disconnection.

REFERENCES:
patent: 7106146 (2006-09-01), Tsukahara et al.
patent: 2005/0093646 (2005-05-01), Tsukahara et al.
patent: 2007/0024389 (2007-02-01), Mizutani
patent: 09-162602 (1997-06-01), None
patent: 2005-136630 (2005-05-01), None
patent: WO 03/032431 (2003-04-01), None

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