Linearizer for microwave power amplifiers

Details Linearizer for microwave power amplifiers Linearizer for microwave power amplifiers

1988-01-22

1988-09-20

LaRoche, Eugene R.

Amplifiers

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

332 17, H03G 920

Patent

active

047728558

ABSTRACT:
A linearizer circuit is described having a main radio frequency or intermediate frequency network and secondary baseband frequency network. The main network includes a directional coupler, a delay line, a phase modulator and an amplitude modulator. The secondary network includes means for amplitude detecting and filtering an input signal and a pair of adjustable-gain amplifiers which receive the amplitude detected signal and on the basis of the gain adjustment act on the two modulators as to give them nonlinear response curves so as to compensate for the nonlinearity of the power amplifier placed downstream from the linearizer.

REFERENCES:
patent: 4268802 (1981-05-01), Fisher et al.
patent: 4373115 (1983-02-01), Kahn
patent: 4600892 (1986-07-01), Wagner et al.

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