D.C. current compensation circuit for a nonlinear amplifier

Details D.C. current compensation circuit for a nonlinear amplifier D.C. current compensation circuit for a nonlinear amplifier

1994-03-31

1995-07-11

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

327362, H03F 130

Patent

active

054324793

ABSTRACT:
A D.C. current compensation circuit for a nonlinear amplifier includes a compensating amplifier of substantially the same circuit configuration as that of the nonlinear amplifier, and a current mirror for coupling the compensation amplifier to the nonlinear amplifier to be compensated. The compensating amplifier is provided with feedback from its output to its input, so that a D.C. current provided to the output of the compensating amplifier can be used to compensate the D.C. input current of the nonlinear amplifier. In this manner, the nonlinear amplifier can be compensated for changes in gain due to temperature or manufacturing process variations.

REFERENCES:
patent: 3935478 (1976-01-01), Okada et al.
patent: 3999139 (1976-12-01), Fennell
patent: 5150076 (1992-09-01), Asazawa

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