Patent ID: 8874050
Filing Date: 2014-10-28
Classification: H01P,H03F,H03H

Abstract:
1. A closed loop power amplifier (PA) control system comprising: power amplifier circuitry adapted to amplify a radio frequency (RF) signal; and power control circuitry adapted to provide an adjustable power control signal for controlling an output power of the power amplifier circuitry, wherein the power control circuitry is further adapted to adjust the adjustable power control signal in response to a feedback signal from the power amplifier circuitry and in response to a dynamic baseband signal having an amplitude for urging an increase in the output power of the power amplifier circuitry before the beginning of a transmission of the RF signal and for urging a decrease in the output power after the transmission of the RF signal and in response to a fixed dc signal having a voltage that urges a constant output power in place of the dynamic baseband signal during the transmission of the RF signal, wherein the fixed dc signal is derived from a sample voltage of the feedback signal by subtracting a correction offset voltage derived from the sample voltage that is taken at a predetermined time that is referenced to the dynamic baseband signal.