Patent ID: 8159309

Claim:
Radio frequency (RF) circuitry comprising: a baseband controller adapted to: window a stream of amplitude modulation input signal (AMIS) samples to create a stream of windowed AMIS samples, such that: the stream of AMIS samples is divided into a stream of input windows and the stream of windowed AMIS samples is created from a stream of output windows; each output window is created from a corresponding input window; and each input window includes N of the stream of AMIS samples and each output window provides M of the stream of windowed AMIS samples, such that under at least certain operating conditions, N is greater than one, and M is less than or equal to N; and provide a windowed amplitude modulation power supply input signal (WAMPSIS) using the stream of windowed AMIS samples; an amplitude modulation (AM) power supply adapted to provide an AM power supply output signal based on the WAMPSIS; and a power amplifier stage adapted to: receive and amplify an AM RF input signal to provide an AM RF output signal; and use the AM power supply output signal to provide power for amplification.