Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2006-06-06
2006-06-06
Takaoka, Dean (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S132000, C333S185000
Reexamination Certificate
active
07057472
ABSTRACT:
A multi-band antenna switch circuit including a diplexer connected to an antenna terminal for demultiplexing signals of different passing bands, a first and a second switch circuit for switching a high frequency signal and a low frequency signal demultiplexed by the diplexer to a plurality of transmission/reception terminals, a first and a second low pass filter connected to a transmission path between the diplexer and the transmission terminal or between the first and the second switch circuit and the transmission terminal, and a notch filter provided between the diplexer and the first switch circuit or between the diplexer and the second switch circuit. The multi-band antenna switch circuit includes a high pass filter having an input terminal and an output terminal and provided at least between die diplexer and the antenna terminal and including a first inductor connected between the input terminal and the ground, a first capacitor connected between the input terminal and the output terminal, a second inductor connected to the output terminal, and a second capacitor connected between the second inductor and the ground.
REFERENCES:
patent: 4147980 (1979-04-01), Frosch
patent: 5768691 (1998-06-01), Matero et al.
patent: 5793265 (1998-08-01), Spielman
patent: 5815804 (1998-09-01), Newell et al.
patent: 6058000 (2000-05-01), Koenck et al.
patent: 6115585 (2000-09-01), Matero et al.
patent: 6351294 (2002-02-01), Yamamoto et al.
patent: 6633748 (2003-10-01), Watanabe et al.
patent: 6731184 (2004-05-01), Muto et al.
patent: 0 932 216 (1999-07-01), None
patent: 1 037 308 (2000-09-01), None
patent: 1 083 672 (2001-03-01), None
patent: 11-225088 (1999-08-01), None
patent: 2000-165288 (2000-06-01), None
patent: 2001-044883 (2001-02-01), None
patent: 2001044884 (2001-02-01), None
patent: 2001-186047 (2001-07-01), None
patent: WO 00/51012 (2000-08-01), None
Fukamachi Keisuke
Kemmochi Shigeru
Tai Hiroyuki
Taketa Tsuyoshi
Watanabe Mitsuhiro
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Hitachi Metals Ltd.
Takaoka Dean
LandOfFree
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