Patent ID: 8060034

Claim:
A polar modulation transmission apparatus that inputs a phase modulated signal generated from a phase component of an input complex signal to a signal input port of a power amplifier and that inputs a power supply voltage, which is adjusted by an amplitude modulated signal generated from an amplitude component from the input complex signal, to a power supply input port of the power amplifier, the polar modulation transmission apparatus comprising: a detector that detects an output power of the power amplifier; a peak to average power ratio calculating section that calculates a peak to average power ratio of the input complex signal; a compensation value generating section that outputs a compensation value corresponding to the calculated peak to average power ratio; an arithmetic operation section that performs an arithmetic operation using the compensation value and a detection result obtained by the detector; and a transmission power control section that, by scaling the phase modulated signal and the power supply voltage based on an arithmetic operation result obtained by the arithmetic operation section, controls the output power of the power amplifier.