Systems and Methods of RF Power Transmission, Modulation, and Amplification, Including Embodiments for Compensating for Waveform Distortion

Abstract

Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

1 . A method for phase and amplitude error correction in a power amplifier, comprising:
 measuring phase and amplitude error differential signals using any structure depicted in  FIGS. 59A-D  and  FIGS. 63A-D ; and   adjusting phase and amplitude of constant envelope signals of the power amplifier according to said error differential signals.