Multi-state load switched power amplifier for polar...

Details Multi-state load switched power amplifier for polar... Multi-state load switched power amplifier for polar...

2007-02-27

2007-02-27

Nguyen, Patricia (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S010000, C330S302000

Reexamination Certificate

active

11026444

ABSTRACT:
A polar modulation power amplifier circuit includes a control circuit (101) to determine and provide a load selection signal (127), wherein the load selection signal (127) is determined responsive to a requested power signal (119). A power amplifier (113) is responsive to a power control signal (141), for amplifying an RF signal (139) to produce an amplified signal (145), having an output power level. A variable impedance matching circuit (117) is responsive to the load selection signal (127), to adjust a relationship between the control level and the output power level, to produce a range-adjusted amplified signal (147).

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patent: 2004/0000948 (2004-01-01), Stengel et al.
patent: WO 02/082637 (2002-10-01), None

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