Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Reexamination Certificate
2006-10-24
2006-10-24
Urban, Edward F. (Department: 2681)
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
C333S101000, C455S083000
Reexamination Certificate
active
07127215
ABSTRACT:
A transmitting/receiving switch, in which a transmission terminal connected to a transmission circuit is connected to an antenna terminal through a first switching element, a filter for attenuating harmonic contents in a transmission signal, a phase-shift circuit for significantly increasing an impedance from a node toward said transmission terminal in a reception frequency band by phase-adjusting the amount of phase shift by performing phase adjustment according to the amount of the phase shift generated by said filter. Furthermore, the antenna terminal connected to an antenna ANT is connected to a reception terminal through the node and a second switching element, and the reception terminal is connected to a reception circuit Rx.
REFERENCES:
patent: 4677688 (1987-06-01), Yoshihara et al.
patent: 5023935 (1991-06-01), Vancraeynest
patent: 5193218 (1993-03-01), Shimo
patent: 5507011 (1996-04-01), Chigodo et al.
patent: 5604470 (1997-02-01), Atokawa
patent: 5634200 (1997-05-01), Kitakubo et al.
patent: 5822684 (1998-10-01), Kitakubo
patent: 5896563 (1999-04-01), Kawanami et al.
patent: 6034990 (2000-03-01), Kang
patent: 6108313 (2000-08-01), Lee et al.
patent: 6289204 (2001-09-01), Estes et al.
patent: 0 667 684 (1995-08-01), None
patent: 60-111149 (1985-07-01), None
patent: 4-35324 (1992-02-01), None
patent: 8-237166 (1996-09-01), None
Offical Action from the UK Patent Office corresponding to application No. GB 9925071.4 Dated Nov. 26, 2002.
British Search Report, application No. 9925071.4, dated May 3, 2000.
JPO Office Action issued on Aug. 5, 2003 (partial translation provided).
Ishizaki Toshio
Nakamura Hiroyuki
Sakakura Makoto
Yoshizumi Jyunichi
Matsushita Electric - Industrial Co., Ltd.
RatnerPrestia
Smith S.
Urban Edward F.
LandOfFree
Transmitting/receiving switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmitting/receiving switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmitting/receiving switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3644512