Distortion correction circuit for a power amplifier

Details Distortion correction circuit for a power amplifier Distortion correction circuit for a power amplifier

1980-07-10

1983-01-04

Mullins, James B.

Amplifiers

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

330 84, 330146, 330126, 330295, 330306, H03F 126

Patent

active

043674429

ABSTRACT:
An amplifying device comprising a pre-amplifier, a first high power amplifier of a relatively bad lineality for amplifying the outputs of the pre-amplifier, a first impedance element for applying the outputs of the first amplifier to a load, a negative feedback circuit for feeding back the outputs of the first amplifier to the input of the pre-amplifier and a second low power amplifier of the relatively good linearity for amplifying the inputs of the first amplifier and supplying the outputs through a second impedance element to the load. The amplifying device can cancel the distortion in the high frequency band caused in the first amplifier through the first and second impedance elements by the outputs of the first amplifier.

REFERENCES:
patent: 3725727 (1973-04-01), Waehner
patent: 3801858 (1974-04-01), Grangaard et al.
patent: 3970953 (1976-07-01), Walker et al.

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