Patent ID: 8219045
Filing Date: 2012-07-10
Classification: H03F,H03G

Abstract:
1. A method of feedback transmitter power control, comprising the steps of: sensing transmitter temperature; sensing forward and reflected transmitter power; and generating a control voltage using the transmitter temperature and the forward and reflected transmitter power; applying the control voltage, as a voltage controlled attenuator (VCA) control voltage, to a voltage controlled attenuator in a feedback path from a power amplifier to a controller IC; controlling an RF signal through the voltage controlled attenuator based on the VCA control voltage; applying the controlled RF signal as an RF input to the controller IC in the feedback path; generating a power amplifier (PA) voltage control signal by the controller IC based on the RF input; and applying the PA voltage control signal to the power amplifier, wherein the PA voltage control signal modifies transmitter power of the power amplifier.