Patent ID: 7215972
Filing Date: 2007-05-08
Classification: H03G

Abstract:
1. A power control system comprising: a gain control stage configured to amplify an input signal to produce an amplified signal; a power detector coupled to an output of the gain control stage, the power detector to detect a ramp of the amplified signal and to provide an indication of the ramp; and a controller coupled to the power detector and the gain control stage, the controller configured to adjust a supply or control voltage to the gain control stage responsive to the indication of the ramp to cause the supply or control voltage to change as the ramp varies from a predetermined ramp, wherein the predetermined ramp comprises a desired waveform curve modified by a required power level the controller comprising: an error squaring unit; an adaptive filter coefficients calculation unit; and a adaptive filter having multiple taps coupled to the adaptive filter coefficient calculation unit; wherein the ramp of the amplified signal is compared to the predetermined ramp producing an error term; wherein the adaptive filter coefficient calculation unit uses the error term to calculate and adjust one or more of the multiple taps of the adaptive filter; wherein an output of the adaptive filter is fed into a loop filter that accumulates the output signal.