Package filter and combiner network

Details Package filter and combiner network Package filter and combiner network

2007-10-16

2007-10-16

Anderson, Matthew D. (Department: 2618)

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

C455S078000, C455S080000, C333S025000, C333S103000

Reexamination Certificate

active

10262336

ABSTRACT:
A transceiver front end circuit includes an antenna terminal capable of being coupled to an antenna. A first balun circuit has a single input that is coupled to the antenna terminal, and a pair of balanced outputs coupled to a corresponding pair of balanced receiver inputs. The first balun circuit matches an input impedance of the pair of balanced receiver inputs and substantially phase shifts the input reflection coefficient of the pair of balanced receiver inputs by about 180-degrees. A second balun circuit has a single output coupled to the antenna terminal and a pair of balanced inputs coupled to a corresponding pair of balanced transmitter outputs. The second balun circuit matches an output impedance of the pair of balanced transmitter outputs and substantially phase shifts the output reflection coefficient of the pair of balanced transmitter outputs by about 180-degrees. The first balun circuit and the second balun circuit can be contained within a single package. A first shunt switch can be coupled across the pair of receiver inputs. A second shunt switch can be coupled across the pair of transmitter outputs.

REFERENCES:
patent: 5172082 (1992-12-01), Livingston et al.
patent: 5584053 (1996-12-01), Kommrusch et al.
patent: 5673003 (1997-09-01), Zocher
patent: 5867072 (1999-02-01), Logothetis
patent: 6009314 (1999-12-01), Bjork et al.
patent: 6040745 (2000-03-01), Tanaka et al.
patent: 6147571 (2000-11-01), Kitazawa et al.
patent: 6249687 (2001-06-01), Thomsen et al.
patent: 6278340 (2001-08-01), Liu
patent: 6294965 (2001-09-01), Merrill et al.
patent: 6441696 (2002-08-01), Westberg
patent: 6466770 (2002-10-01), Griffith et al.
patent: 6470173 (2002-10-01), Okada et al.
patent: 6670866 (2003-12-01), Ella et al.
patent: 6735418 (2004-05-01), MacNally et al.
patent: 6828881 (2004-12-01), Mizutani et al.
patent: 6844792 (2005-01-01), Koeppe et al.
patent: 6982609 (2006-01-01), McKay et al.
patent: 2002/0034934 (2002-03-01), Watanabe et al.
patent: 2002/0163375 (2002-11-01), Wu et al.
Choonsik Cho, “A New Design Procedure for Single-Layer and Two-Layer Three-Line Baluns”, IEEE Transactions On Microwave Theory And Techniques, vol. 46, No. 12, Dec. 1998.

Affiliated with

Also associated with

Rating

Package filter and combiner network does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Package filter and combiner network, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Package filter and combiner network will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3877846