Duplexer

Details Duplexer Duplexer

2005-12-02

2009-08-25

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S193000

Reexamination Certificate

active

07579927

ABSTRACT:
A duplexer includes: a transmission filter and a reception filter that have different band center frequencies from each other; a phase matching circuit that performs phase matching on the transmission filter and the reception filter; and a laminated package that includes a first layer on which the transmission filter, the reception filter, and the phase matching circuit are mounted. In this duplexer, the first layer includes a first ground line pattern that is connected to a ground of the transmission filter, a second ground line pattern that is connected to a ground of the reception filter, a third ground line pattern that is connected to a ground of the phase matching circuit, and signal line patterns. The laminated package also includes a second layer that is located below the first layer. The second layer includes a partition ground line pattern that is located between the signal line patterns, a signal foot pad for external connection, and a ground foot pad. The first ground line pattern and the second ground line pattern are connected to the partition ground line pattern via the ground foot pad.

REFERENCES:
patent: 6462631 (2002-10-01), Bradley et al.
patent: 6566981 (2003-05-01), Urabe et al.
patent: 6714098 (2004-03-01), Nishida et al.
patent: 6822537 (2004-11-01), Taniguchi et al.
patent: 6919778 (2005-07-01), Iwamoto et al.
patent: 2003/0098757 (2003-05-01), Iwamoto et al.
patent: 2005/0146397 (2005-07-01), Koga et al.
patent: 2006/0197630 (2006-09-01), Fuse
patent: 1421999 (2003-06-01), None
patent: 09-098046 (1997-04-01), None
patent: 11186872 (1999-07-01), None
patent: 2001-313542 (2001-11-01), None
patent: 2004080233 (2004-03-01), None
patent: 2004-328676 (2004-11-01), None
patent: 2002-0041518 (2002-06-01), None

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