Patent ID: 9054642
Filing Date: 2015-06-09
Classification: H03C,H03F,H04B,H04L

Abstract:
1. A communications system comprising: a polar conversion component configured to provide an amplitude signal and a phase signal; a polar modulator configured to receive the amplitude signal and the phase signal and to provide a phase modulated local oscillator signal and an RF output signal; an RF front-end component configured to receive the RF output signal and to provide a coupled output signal; a feedback receiver configured to receive the phase modulated local oscillator signal and the coupled output signal and to generate an uncompensated feedback phase information signal; a delay compensation component configured to receive the phase signal from the polar conversion component, to receive the uncompensated feedback phase information signal from the feedback receiver, to utilize an RF delay and a roundtrip delay, and to generate a compensation signal based on the uncompensated feedback phase information signal, the roundtrip delay and the RF delay, wherein the RF delay is at least partially based upon a path of the phase modulated local oscillator signal; and an adder configured to add the compensation signal to the uncompensated feedback phase information signal to generate a compensated feedback phase information signal.