NONLINEAR DISTORTION CORRECTOR Russian patent published in 2004 - IPC

FIELD: correction of nonlinear distortions in complex-nonlinearity radio equipment by input signal predistortions.

SUBSTANCE: corrector is built around channels 21 through 2n of which first one has variable-gain amplifier and each of other ones is quadrature channel that has quadrature signal divider 3, cophasal adder 7, and two structurally identical circuits set up of first variable-gain amplifier 4.1, 4.2, diode section 5.1, 5.2, and second variable-gain amplifier 6.1, 6.2. Channel input is that of input-signal adder 1 each of whose outputs is coupled with input of one of channels; channel output is that of channel-signal adder 8 each of whose inputs is coupled with output of one of signal passing channels. Adequate choice of parameters for nonlinear distortion corrector provides for its complex amplitude response reverse to that of nonlinear device being corrected thereby affording correction of nonlinear distortions.

EFFECT: simplified design and facilitated adjustment at high effectiveness of suppressing nonlinear distortions.

1 cl, 10 dwg