Patent ID: 7778352

Claim:
A radio frequency (RF) polar transmitter, comprising: a digital processor coupled to receive a complex modulated digital signal and a feedback signal and operable to compare the complex modulated digital signal to the feedback signal to determine an error signal indicative of a difference between the complex modulated digital signal and the feedback signal and further operable to produce a correction signal from the error signal and to add the correction signal to the complex modulated digital signal to produce a corrected complex modulated digital signal, the corrected complex modulated digital signal including an amplitude-modulated digital signal and a phase-modulated digital signal; a Digital-to-Analog Converter (DAC) for converting the amplitude-modulated digital signal from analog to digital to produce an amplitude-modulated analog signal; a translational loop operable to produce a phase-modulated RF signal from the phase-modulated digital signal; a power amplifier operable to produce a modulated RF signal from the phase-modulated RF signal and the amplitude-modulated analog signal; and a feedback loop coupled to receive the modulated RF signal from the power amplifier and operable to produce the feedback signal from the modulated RF signal.