Patent ID: 8908751
Filing Date: 2014-12-09
Classification: H03F,H04B

Abstract:
1. A transmitter circuit, comprising: one or more transmission chain elements configured to receive an input signal and to generate an output signal; a figure of merit measurement element configured to receive information about the output signal from a feedback loop, extending from the one or more transmission chain elements to the figure of merit measurement element, and to determine a measured figure of merit of the output signal; an adaptive biasing element configured to adaptively bias the one or more transmission chain elements to iteratively reduce a current consumption of the one or more transmission chain elements until the measured figure of merit violates a predetermined quality standard; and a pre-distortion element located upstream of the one or more transmission chain elements and configured to generate a distorted input signal to improve the measured figure of merit and thus account for non-linearities introduced into the output signal during the adaptive biasing, until the measured figure of merit no longer violates the predetermined quality standard.