Patent ID: 8009765

Claim:
A digital polar transmitter, comprising: a baseband processor configured to receive an input signal and to convert the input signal into a baseband amplitude component and a baseband phase component; a phase modulator in communication with the baseband processor, wherein the phase modulator is configured to modulate an RF carrier signal based on the phase component and to generate a phase-modulated RF carrier signal; a power amplifier in communication with the baseband processor and the phase modulator, wherein the power amplifier is configured to amplify the phase-modulated RF carrier signal based on the baseband amplitude component and to generate an amplified RF signal; and a digital feedback loop in communication with the power amplifier and the baseband processor, wherein the digital feedback loop is configured to detect the amplified RF signal and the phase-modulated RF carrier signal, and to provide a digital amplitude feedback signal and a digital phase feedback signal to the baseband processor, based upon the amplified RF signal and the phase-modulated RF carrier signal.