Noise reducer for microwave amplifier

Details Noise reducer for microwave amplifier Noise reducer for microwave amplifier

1988-05-23

1989-06-06

Wan, Gene

Amplifiers

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

H03F 126

Patent

active

048375225

ABSTRACT:
In a noise reducer for microwave amplifiers working by pulses, a small portion of the amplifier output signal is diverted through an ancillary channel. The amplitude of the pulses of this diverted signal is greatly reduced by a limiter. The noise between the pulses can then be processed in an amplifying circuit and in a phase-shifting circuit so that, by combining the main signal in a second coupler, the noise between the pulses is eliminated. This invention can be applied to transmission amplifiers forming part of a transmission/reception set where reception takes place between the transmission pulses.

REFERENCES:
patent: 2970276 (1983-07-01), Dollinger
patent: 4520476 (1985-05-01), Searl

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