POLAR TRANSMITTER FOR MODULATING HIGH FREQUENCY COMPONENT OF AMPLITUDE SIGNAL WITH AMPLITUDE OF PHASE MODULATOR

摘要

The present invention relates to a polar transmitter comprising: a high frequency pass filter for receiving an amplitude signal outputted via a polar converter and outputting a high frequency signal; a low frequency pass filter for receiving the amplitude signal and outputting a low frequency signal at a lower band than the high frequency signal; an amplitude/phase modulator for receiving the high frequency signal and a phase signal outputted via the polar converter and outputting an amplitude/phase modulation signal with modulated amplitude and phase; an amplitude modulator for amplitude-modulating the low frequency signal and outputting a low frequency amplitude modulation signal; and a power amplifier for receiving the amplitude/phase modulation signal and the low frequency amplitude modulation signal and outputting an RF signal.