Polar modulation transmission apparatus and radio communication apparatus

摘要

A polar modulation transmission apparatus is provided which can adjust synchronization between an amplitude signal and phase signal in a simple configuration accurately and automatically. A polar signal generation circuit 101 sends an amplitude signal and phase signal for synchronization adjustment to transmission lines of these signals, incorporates the amplitude signal and phase signal for synchronization adjustment output from low pass filters 104, 132 which are final stage circuits that process the respective signals in their baseband signal states into a delay difference detection circuit 109, a synchronization adjustment control circuit 110 obtains a synchronization adjustment value at which the delay difference between the signals is eliminated based on the delay difference detection result and a synchronization adjustment circuit 102 gives delays corresponding to the synchronization adjustment value to the respective signals.