Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2006-05-19
2009-12-08
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S101000, C333S126000, C333S129000
Reexamination Certificate
active
07629862
ABSTRACT:
A composite duplexer includes an antenna terminal, a first receiving terminal, a second receiving terminal, a transmitting terminal, a first switch, a duplexer, and a second switch. The first switch includes a first branch contact, a second branch contact connected with the transmitting terminal, a third branch contact connected with the second receiving terminal, and a first common contact connected with the first antenna terminal. The first common contact of the first switch is connected selectively with the first branch contact, the second branch contact, and the third branch contact. The first duplexer includes a first receiving filter connected with the first receiving terminal, and a first transmitting filter. The duplexer is connected with the first branch contact of the first switch. The second switch is operable to connect and disconnect electrically between the first transmitting filter of the first duplexer and the transmitting terminal. This composite duplexer can separate signals even if their frequency bands are close to each other.
REFERENCES:
patent: 6995630 (2006-02-01), Satoh et al.
patent: 7324493 (2008-01-01), Yamada et al.
patent: 7383024 (2008-06-01), Mueller et al.
patent: 11-313003 (1999-11-01), None
patent: 2002-368646 (2002-12-01), None
patent: 2004-328740 (2004-11-01), None
patent: 2005-64732 (2005-03-01), None
Hashimoto Koji
Ishizaki Toshio
Satoh Yuki
Yuda Naoki
Glenn Kimberly E
Lee Benny
Panasonic Corporation
Pearne & Gordon LLP
LandOfFree
Composite duplexer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite duplexer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite duplexer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4147239