Patent ID: 7873119

Claim:
A transmitter for a wireless communications device, wherein the transmitter comprises: a power amplification block comprising: a pre-amplifier configured to amplify a transmission signal to produce a pre-amplified transmission signal; and a power amplifier coupled to an output of the pre-amplifier and configured to amplify the pre-amplified transmission signal to produce an amplified transmission signal; a detector coupled to the output of the pre-amplifier to sense the pre-amplified transmission signal and provide a detected pre-amp output signal; and a power management block comprising: a power supply block configured to generate a supply voltage signal based on the detected pre-amp output signal, and to provide the supply voltage signal to the power amplifier; and a compensating control block coupled to an output of the power supply block in a compensating feedback loop and configured to generate a gain correction signal based on the supply voltage signal, the gain correction signal for adjusting an automatic gain control (AGC) signal to produce a modified AGC signal for controlling pre-amplifier gain.