Power amplifier saturation detection and correction method and a

Details Power amplifier saturation detection and correction method and a Power amplifier saturation detection and correction method and a

1991-06-03

1994-01-11

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

With feedback of modulated output signal

330278, 455115, H04B 104, H03G 320

Patent

active

052789942

ABSTRACT:
A power amplifier controller for detecting saturation of the power amplifier (203) and corrects the automatic output control voltage (231) to avoid any further saturation. A detector (211) detects the power of the radio frequency (RF) output signal (211) and generates a signal (229) correlated to the detected power. Comparator (217) compares changes in that signal (229) to changes in the voltage of the AOC signal (231). The comparator (217) generates a signal (233) correlated to saturation of the power amplifier (203) for a DSP (223). The DSP (223) checks the status of this signal (233). Upon detecting saturation, an algorithm contained within the DSP methodically reduces the voltage of the AOC signal (231) until there is a change in the power of the RF output signal (211).

REFERENCES:
patent: 4114108 (1978-09-01), Faulkenberry et al.
patent: 4367443 (1983-01-01), Hull et al.
patent: 4602218 (1986-07-01), Vilmur et al.
patent: 4727337 (1988-02-01), Jason
patent: 4945314 (1990-07-01), Van Den Bungelaar

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