Patent ID: 7551034
Filing Date: 2009-06-23
Classification: H03G

Abstract:
1. A system comprising: a power amplifier operable to output a signal; a detector associated with the power amplifier and operable to detect the signal output by the power amplifier and, in response, to generate a detector signal; a power control loop to monitor the detector signal and to generate a power control signal in response to the signal output by the detector, and being operable to control the output power of the signal output by the power amplifier, wherein the power control loop includes a digital controller operable to generate the power control signal in response to the signal output by the detector combined with a signal output by the saturation handler; and a saturation handler associated with the power control loop, the saturation handler being operable to monitor the signal output by the detector and the power control signal during implementations of the control loop and to prevent the power control signal from placing the power amplifier into a saturation condition, the saturation handler operable to detect that the power amplifer is approaching a saturation condition and to generate a copy of the signal output by the detector to be used as a target signal output when the approaching saturation condition is detected.