Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2008-04-22
2008-04-22
Nguyen, Patricia (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S286000, C330S310000, C330S053000
Reexamination Certificate
active
07362170
ABSTRACT:
An amplifier has a main amplifier circuit with multiple amplification stages, including a driving stage and an auxiliary amplifier circuit with multiple amplification stages, including a driving stage. A splitter circuit splits an input signal to provide path asymmetry in splitting the input signal between the main amplifier path and auxiliary amplifier path. The driving stage of the auxiliary amplifier circuit has a power rating higher than the power rating of the driving stage of the main amplifier circuit to provide a gain asymmetry in the amplifier circuit paths.
REFERENCES:
patent: 2210028 (1940-08-01), Doherty
patent: 2255476 (1941-09-01), Thomas
patent: 2775657 (1956-12-01), Zeist
patent: 5017888 (1991-05-01), Meinzer
patent: 5420541 (1995-05-01), Upton
patent: 5739723 (1998-04-01), Sigmon
patent: 5786727 (1998-07-01), Sigmon
patent: 5880633 (1999-03-01), Leizerovich
patent: 5966059 (1999-10-01), Sigmon
patent: 6085074 (2000-07-01), Cygan
patent: 6097252 (2000-08-01), Sigmon
patent: 6262629 (2001-07-01), Stengel
patent: 6320464 (2001-11-01), Suzuki
patent: 6329877 (2001-12-01), Bowen
patent: 6396341 (2002-05-01), Pehlke
patent: 6700444 (2004-03-01), Pengelly
patent: 6731172 (2004-05-01), Thompson
patent: 6737922 (2004-05-01), Pengelly
patent: 6791417 (2004-09-01), Pengelly
patent: 6798295 (2004-09-01), Pengelly et al.
patent: 6853244 (2005-02-01), Robinson
patent: 6853245 (2005-02-01), Kim
patent: 6864742 (2005-03-01), Kobayashi
patent: 6917246 (2005-07-01), Thompson et al.
patent: 6922102 (2005-07-01), Myer et al.
patent: 7193473 (2007-03-01), Pengelly et al.
patent: 2001/0030581 (2001-10-01), Dent
patent: 2003/0076167 (2003-04-01), Hellberg
patent: 2003/0137346 (2003-07-01), Hellberg
patent: 2004/0113698 (2004-06-01), Kim
patent: 2004/0174212 (2004-09-01), Kim
patent: 2004/0174213 (2004-09-01), Thompson
patent: 2004/0189381 (2004-09-01), Louis
patent: 2005/0129140 (2005-06-01), Robinson
patent: 1267483 (2002-12-01), None
patent: 1583228 (2005-10-01), None
patent: 2229057 (1990-09-01), None
patent: 2393866 (2004-04-01), None
patent: WO0239577 (2002-05-01), None
patent: WO2004023646 (2004-03-01), None
patent: WO2004023646 (2004-03-01), None
patent: WO2004064247 (2004-07-01), None
patent: WO2004088837 (2004-10-01), None
patent: WO2005031967 (2005-04-01), None
Jangheon Kim, et al.; “Optimum Operation of Asymmetrical-Cells-Based Linear Doherty Power Amplifiers-Uneven Power Drive and Power Matching”; Article; May 5, 2005; 8 pages (1802-1809); IEEE Transactions on Microwave Theory and Techniques; vol. 53; No. 5; Piscataway, NJ, US.
John R. Gajadharsing, et al.; “Analysis and Design of a 200W LDMOS Based Doherty Amplifier for 3G Base Stations”; Article; Jun. 6, 2004; 4 pages (529-532); Microwave Symposium Digest 2004 IEEE MTT-S International; Fort Worth, TX, US; Piscataway, NJ, US.
Cripps, Stephen C.; “Advanced Techniques in RF Power Amplifier Design”, pp. 33-57, Artech House, 2002.
Andrew Corporation
Nguyen Patricia
Wood Herron & Evans LLP
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