Loss less RF feedback for power amplifier linearization

Details Loss less RF feedback for power amplifier linearization Loss less RF feedback for power amplifier linearization

1994-10-03

1995-11-21

Mullins, James B.

Amplifiers

Signal feedback

Phase shift means in loop path

330 53, 330294, 330306, H03F 134

Patent

active

054691141

ABSTRACT:
The method and apparatus for improving linearization of a radio frequency power amplifier which includes extracting a small portion of the output signal of the power amplifier and utilizing this extracted signal as a feedback signal. The feedback signal is then adjusted in phase, attenuated, and combined with the input signal of the power amplifier and then filtered prior to being transmitted to the power amplifier.

REFERENCES:
patent: 3638134 (1972-01-01), Beurrier et al.
patent: 3909742 (1975-09-01), Cox et al.
patent: 4656434 (1987-04-01), Selin
patent: 4816788 (1989-03-01), Ishikawa et al.
patent: 5237288 (1993-08-01), Cleveland

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