Abstract: According to one embodiment, for an amplifier circuit employing feed-forward distortion compensation, phase and amplitude adjusters in the carrier cancellation and error cancellation loops can be continuously and simultaneously controlled to compensate for changes in the operating characteristics of the amplifier circuit. For the carrier cancellation loop, the two signals that are used to generate the error signal are sampled and used to generate control signals for the phase and amplitude adjusters that adjust the signal applied to the main amplifier. For the error cancellation loop, the two signals that are used to generate the output signal are sampled and used to generate control signals for the phase and amplitude adjusters that adjust the signal applied to the error amplifier. In each case, the control signals can be generated in the analog domain using relatively simple measurement circuitry.