Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2007-05-22
2007-05-22
Choe, Henry (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S295000
Reexamination Certificate
active
10537986
ABSTRACT:
A composite power amplifier structure includes a first power amplifier configured as an auxiliary amplifier of a Doherty amplifier and connected to an output node and an even number of further power amplifiers configured into at least one Chireix pair connected to the same output node. The Chireix pairs are driven at least partially in outphasing modes and the first power amplifier is driven in the same manner as the auxiliary amplifier of a Doherty amplifier.
REFERENCES:
patent: 5012200 (1991-04-01), Meinzer
patent: 5886575 (1999-03-01), Long
patent: 6897721 (2005-05-01), Hellberg
patent: 6940349 (2005-09-01), Hellberg
patent: 01/91282 (2001-11-01), None
Doherty, “A New High Efficiency Power Amplifier for Modulated Waves”, Proc. IRE, vol. 24, No. 9, pp. 1163-1182, Sep. 1936.
Chireix, “High Power Outphasing Modulation”, Proc. IRE, vol. 23, No. 2, pp. 1370-1392, Nov. 1935.
Raab, “Efficiency of Doherty RF Power Amplifier Systems”, IEEE Trans. Broadcasting, vol. BC-33, No. 3, pp. 77-83, Sep. 1987.
Raab, “Efficiency of Outphasing RF Power Amplifier Systems”, IEEE Trans. Communications, vol. COM-33, No. 10, pp. 1094-1099, Oct. 1985.
Stengel et al., “LINC Power Amplifier combiner Method Efficiency Optimization”, IEEE Trans. Vehicular Technology, vol. 49, No. 1, pp. 229-234, Jan. 2000.
Hellberg Richard
Klingberg Mats
Choe Henry
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
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