A TRANSMITTER CIRCUIT AND METHOD FOR MODULATION DISTORTION COMPENSATION

A transmitter circuit ( 200, 400, 510 ) and method reduces amplitude modulation distortion in an amplifier ( 210 ). The transmitter circuit ( 200, 400, 510 ) includes a power control error data generator ( 230 ), a feedforward predistortion data generator ( 240 ), feedforward adder logic ( 250 ) and the amplifier ( 210 ). The power control error data generator ( 230 ) receives amplitude modulation data ( 252 ) and an RF coupled output signal ( 254 ) and, in response, produces power control error data ( 256 ). The feedforward predistortion data generator ( 240 ) receives the amplitude modulation data ( 252 ) and, in response, produces feedforward predistortion data ( 258 ). The feedforward adder logic ( 250 ) receives the power control error data ( 256 ) and the feedforward predistortion data ( 258 ) and, in response, produces power control data ( 260 ). The amplifier ( 210 ) receives the power control data ( 260 ) and an RF input signal ( 261 ) and, in response, produces an RF output signal ( 262 ), such that the power control data ( 260 ) reduces amplitude modulation distortion in the RF output signal ( 262 ).