Distortion compensating circuit

Details Distortion compensating circuit Distortion compensating circuit

1983-11-08

1986-05-13

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307591, 307494, 328162, 330279, G06G 710, G06G 712

Patent

active

045889090

ABSTRACT:
A distortion compensating circuit for use with voltage-controlled amplifiers and other circuits responsive to a control signal source. The compensating circuit is connected between the control signal source and a control input to the controlled amplifier. The compensating circuit provides a compensated control signal which cancels out non-linearities in the controlled amplifier. The circuit includes reproduction circuitry which provides a feedback signal having a relationship with the compensated control signal similar to the non-linear relationship present in the controlled amplifier. Additional circuitry connected to the control signal source is provided for adjusting the compensated control signal so that a linear relationship is maintained between the uncompensated control signal and the feedback signal. Thus, the non-linearities present in the distortion compensating circuit and in the controlled circuit cancel out one another so that the relationship between the control signal and the gain of the voltage-controlled amplifier is substantailly linear.

REFERENCES:
patent: 3569867 (1971-03-01), Ernst
patent: 3584233 (1971-06-01), Cath et al.
patent: 4380711 (1983-04-01), Cunningham
patent: 4426625 (1984-01-01), Harwood et al.
patent: 4516041 (1985-05-01), Quan
patent: 4523153 (1985-06-01), Itoh

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