Patent ID: 8509351

Claim:
Multi-mode radio frequency (RF) circuitry comprising: control circuitry adapted to select between a standard modulation mode and a small signal polar modulation mode; a frequency synthesizer adapted to: during the standard modulation mode, provide an un-modulated RF carrier signal; and during the small signal polar modulation mode, provide a phase-modulated RF carrier signal; an IQ modulator adapted to: during the standard modulation mode: receive an in-phase modulation signal and a quadrature-phase modulation signal, such that the in-phase modulation signal and the quadrature-phase modulation signal comprise phase information; and receive and phase-modulate the un-modulated RF carrier signal using the phase information to provide a standard modulated RF signal; and during the small signal polar modulation mode: receive at least one of the in-phase modulation signal and the quadrature-phase modulation signal, such that the at least one of the in-phase modulation signal and the quadrature-phase modulation signal comprises amplitude information; and receive the phase-modulated RF carrier signal and use the amplitude information to provide a small signal polar modulated RF signal.