Patent ID: 8766718

Claim:
A system comprising: a linearizer configured to use a predistortion control signal to add predistortion to a receive signal to generate a predistorted signal; a power amplifier configured to amplify power of the predistorted signal to generate a first amplified signal, the power amplifier adding high side and low side amplifier distortion to the predistorted signal, the high side and low side amplifier distortion cancelling at least a portion of the predistortion; a feedback block configured to capture a feedback signal based on a previous amplified signal from the power amplifier, to determine high side and low side distortion of the captured feedback signal, and to generate the predistortion control signal based on the determined high side and low side distortion; a splitter configured to split the feedback signal; a first oscillator and mixer module configured to assist in sampling the low side of the feedback signal from the splitter; a second oscillator and mixer module configured to assist in sampling the high side of the feedback signal from the splitter; and a combiner to combine samples from the first oscillator and mixer module and from the second oscillator and mixer module.