Patent ID: 9270239
Filing Date: 2016-02-23
CPC Classification: H03F

Claim Text:
1. A radio frequency (RF) power amplifier system, comprising: a power amplifier to generate a RF output signal from a RF input signal, the power amplifier powered by a supply voltage; a characterization block to generate an adjustment signal for adjusting the supply voltage in a first time period and generate characterization information as the supply voltage is adjusted during the first time period, the characterization information corresponding to a relationship between the supply voltage and performance of the RF power amplifier system for a plurality of levels of one or more operating conditions of the RF power amplifier system; an amplitude estimator block to estimate an amplitude of the RF input signal; and a supply control block to generate a supply voltage control signal for controlling the supply voltage to the power amplifier based on initial supply voltage values in a look up table and the amplitude of the RF input signal during the first time period, and to generate the supply voltage control signal based on the characterization information and the amplitude of the RF input signal in a second time period.