Patent ID: 9749163
Date: 2017-08-29
CPC Classifications: H03F,H04B,H04L

Claim:
1. A power encoder, comprising: a pulse width modulator for modulating a signal according to a set of thresholds including at least two positive voltage thresholds to produce a pulse width modulated (PWM) signal; and a switch mode power amplifier for amplifying the PWM signal by switching states of switching devices according to amplitudes of the PWM signal, wherein at least one or combination of a distribution of values of the voltage thresholds in the set of thresholds and a distribution of values of currents generated by the switching devices are non-uniform such that a distance between neighboring voltages in the set of thresholds and a distance between neighboring currents in the generated currents vary, wherein the set of thresholds includes a first voltage threshold and a second voltage threshold, wherein a ratio of the first voltage threshold and the second voltage threshold is between 0.3 and 0.4.