Control system for the linearization of an amplifier circuit

Details Control system for the linearization of an amplifier circuit Control system for the linearization of an amplifier circuit

1998-08-21

1999-12-14

Pascal, Robert

Amplifiers

Hum or noise or distortion bucking introduced into signal...

330136, 455126, H03F 126, H03G 320, H01Q 1112

Patent

active

060023007

ABSTRACT:
A control system for the linearization of an amplifier circuit having a power amplifier operating in the non-linear region for the amplification of an RF input signal. In a modulator a local oscillator is derived from a coupled-out input measurement signal. In a mixer, the local oscillator signal is mixed with the input and output measurement signal to form a respective intermediate-frequency signal. In a detector, level signals are derived from the intermediate-frequency signal and are compared in an amplitude controller. A derived amplitude control signal controls an amplitude controlling element for the linearization of the amplification of the input signal.

REFERENCES:
patent: 3900823 (1975-08-01), Sokal et al.
patent: 5675288 (1997-10-01), Peyrotte et al.

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