Patent ID: 7768346

Claim:
An apparatus with linearization feedback, the apparatus including: an amplification stage configured to provide a gain to an input signal and to produce an amplified output signal, wherein the amplification stage includes an interface configured to receive a feedback control signal; an envelope detection feedback network coupled to the amplification stage configured to adjust the feedback control signal, wherein the envelope detection feedback network includes a first interface configured to receive the input signal, a second interface configured to receive the amplified output signal, and a third interface configured to receive an offset adjustment signal, the envelope detection feedback network controlling the gain of the amplification stage based on an envelope of the input signal, an envelope of an attenuated version of the amplified output signal, and the offset adjustment signal; and an offset calibration block including a first interface configured to receive the feedback control signal and a second interface configured to receive an offset reference signal, the offset calibration block generating the offset adjustment signal based on comparing the feedback control signal and the offset reference signal.