Amplifiers – With semiconductor amplifying device – Including plural amplifier channels
Reexamination Certificate
2007-03-20
2007-03-20
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including plural amplifier channels
C330S12400D, C330S149000
Reexamination Certificate
active
11090577
ABSTRACT:
A high power Doherty RF amplifier utilizes multi-stage amplifier modules for both the main amplifier and the peak amplifiers. In one embodiment of a two way two stage amplifier, the first stage of each amplifier module can include signal pre-distortion whereby the first stage compensates for distortion in both the first and second stages. The design is simple and results in a high efficiency amplifier with high gain. In one embodiment, a commercially available CREE PFM19030SM power module is used in both the main amplifier and the peak amplifier.
REFERENCES:
patent: 5786727 (1998-07-01), Sigmon
patent: 6320462 (2001-11-01), Alley
patent: 6700444 (2004-03-01), Pengelly
patent: 6737922 (2004-05-01), Pengelly et al.
patent: 6791417 (2004-09-01), Pengelly et al.
patent: 6798295 (2004-09-01), Pengelly et al.
patent: 6864742 (2005-03-01), Kobayashi
patent: 6947711 (2005-09-01), Leyonhjelm
patent: 7061314 (2006-06-01), Kwon et al.
patent: 2006/0114064 (2006-06-01), Shiikuma
Crescenzi et al., “30 Watt Surface-Mount Power Amplifiers for PCS and UMTS Applications,” 2003 Radio and Wireless Conference (RA WCON), Digest Paper W4.1 pp. 393-396.
Wood et al., “A High Power, High Efficiency UMTS Amplifier using a Novel Doherty Configuration,” RA WCON 2003, Digest Paper P2.20 pp. 329-333.
Crescenzi E. James
Dekker Tom Stewart
Pengelly Raymond S.
Wood Simon M.
Beyer & Weaver, LLP
Cree Inc.
Nguyen Patricia
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