Duplexer and composite module having a package with an...

Details Duplexer and composite module having a package with an... Duplexer and composite module having a package with an...

2005-05-24

2005-05-24

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S126000, C333S129000, C333S132000, C333S187000, C333S193000

Reexamination Certificate

active

06897740

ABSTRACT:
A duplexer includes a transmission band filter and a reception band filter connected in parallel to each other and connected to an antenna terminal. The transmission band filter and the reception band filter are accommodated in a package covered with an electroconductive lid. The package is mounted on a mounting substrate having the antenna terminal and covered with an electroconductive shield mounted on the mounting substrate. At least one of the transmission band filter and the reception band filter has a ground terminal connected to the lid. The lid is electrically connected to the shield.

REFERENCES:
patent: 6351194 (2002-02-01), Takahashi et al.
patent: 6469593 (2002-10-01), Nishizawa et al.
patent: 6700061 (2004-03-01), Kishimoto
patent: 6714099 (2004-03-01), Hikita et al.
patent: 9-98046 (1997-04-01), None
patent: 9-181567 (1997-07-01), None
patent: 2001-24476 (2001-01-01), None
patent: 2002-198774 (2002-07-01), None

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