Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2006-07-04
2006-07-04
Nguyen, Patricia (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S295000
Reexamination Certificate
active
07071775
ABSTRACT:
A power amplifier that includes: an input drive controller (310) for receiving an input signal (312) and for generating from the input signal at least a first drive signal (314), a second drive signal (316), and a third drive signal (318); an outphasing amplifier network (320) coupled to the input drive controller that includes at least a first outphasing amplifier (322) for amplifying the first drive signal and a second outphasing amplifier (326) for amplifying the second drive signal; a peaking amplifier network (330) coupled to the input drive controller that includes at least a first peaking amplifier (332) for amplifying the third drive signal; and a combining network (340) coupled to the outphasing amplifier network and the peaking amplifier network for combining at least the amplified first, second and third drive signals to generate an output signal at a load.
REFERENCES:
patent: 2210028 (1940-08-01), Doherty
patent: 2282714 (1942-05-01), Fagot
patent: 5646631 (1997-07-01), Arntz
patent: 5786727 (1998-07-01), Sigmon
patent: 5966059 (1999-10-01), Sigmon
patent: 6133788 (2000-10-01), Dent
patent: 6262629 (2001-07-01), Stengel et al.
patent: 6369651 (2002-04-01), Dent
patent: 6472934 (2002-10-01), Pehlke
patent: WO 2004/057755 (2004-07-01), None
patent: WO 2005/031966 (2005-04-01), None
Frederick H. Raab, “Efficiency of Doherty RF-Power Amplifier Systems”, Green Mountain Radio Research Company, Winooksi, Vermont, IEEE Transactions on Broadcasting, vol. BC-33, No. 3, Sep. 1987.
Frederick H. Raab, “Efficiency of Doherty RF-Power Amplifier Systems”, Green Mountain Radio Research Company, Winooksi, Vermont, Aug. 4, 1984; Revised Jul. 12, 1985; Revised Oct. 8, 1985; Revision C 10 14, 1988.
Srirattana, et al., “A High Efficiency Multistage Doherty Power Amplifier for WCDMA”, School of Electrical and Computer Engineering; Georgia Institute of Technology, Atlanta, GA, 0-7803-7829-6/03 2003 IEEEI.
Iwamoto, et al., “An Extended Doherty Amplifier with High Efficiency Over a Wide Power Range”, Dept of Computer and Electrical Engineering, University of California at San Diego; La Jolla, CA, WE3A-6, 2001 IEEE MTT-S Digest.
Raab, et al., “RF and Microwave Power Amplifier and Transmitter Technologies—Part 3”, High Frequency Electronics, Sep. 2003, Summit Technical Media, LLC.
Cygan Lawrence F.
Gailus Paul H.
Davis Valerie M.
Motorola Inc.
Nguyen Patricia
LandOfFree
Method and apparatus for an enhanced efficiency power amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for an enhanced efficiency power amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for an enhanced efficiency power amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3606498