Patent ID: 6701134
Filing Date: 2004-03-02
Classification: H03F,H04B

Abstract:
Wireless communication circuitry for facilitating polar modulation comprising:a) polar modulation logic adapted to provide an amplitude signal and a frequency signal corresponding to polar coordinates of symbols to be transmitted; b) power amplifier circuitry comprising a driver stage coupled in series with an output stage to amplify a function of the frequency signal and provide an amplified signal at an output of the output stage, the driver stage adapted to receive a first function of the amplitude signal as a supply voltage and the output stage adapted to selectively receive a second function of the amplitude signal as a supply voltage; and c) power control logic adapted to receive the amplitude signal and an output stage enable signal and selectively provide the second function of the amplitude signal to the output stage, wherein the output stage further amplifies the function of the frequency signal amplified by the driver stage when the second function of the amplitude signal is applied to the output stage, and capacitively couples the function of the frequency signal amplified by the driver stage to the output of the output stage when the second function of the amplitude signal is not applied.