Patent ID: 8824978
Filing Date: 2014-09-02
Classification: H03F,H04B

Abstract:
1. A radio frequency (RF) power amplifier system, comprising: an RF power amplifier; a digital-to-RF modulator to generate an RF input signal for the RF power amplifier based on input information indicative of amplitude values and phase values; a voltage control unit to provide a variable supply voltage to the RF power amplifier in response to a control signal, the variable supply voltage being selected from a plurality of discrete voltage levels; and a controller to provide the input information to the digital-to-RF modulator and the control signal to the voltage control unit based, at least in part, on data to be transmitted from the RF transmitter, the controller being configured to make decisions about voltage level changes for the RF power amplifier based, at least in part, on a window of data samples representing data to be transmitted by the RF transmitter.