Patent ID: 7542741
Filing Date: 2009-06-02
Classification: H03G

Abstract:
1. A method for compensating gain control variations in a power amplifier, comprising: providing a power control signal to a power control element; providing an instantaneous envelope power reference signal to the power control element; combining in the power control element the power control signal and the instantaneous envelope power reference signal to obtain a modified power level signal; applying the modified power level signal to a power mapping function, the power mapping function configured to linearize a response of the power control element, the power control element responsive to an output of the power amplifier and having variable gain, wherein a gain of the power control element remains constant over a range of power output from the power amplifier; and using the modified power level signal to alter a control input to a variable gain amplifier, the variable gain amplifier controlling an adjustable input to the power amplifier.