Patent ID: 7443261
Filing Date: 2008-10-28
Classification: H03C,H04L

Abstract:
1. A phase modulation apparatus that generates a phase modulation signal by performing phase modulation on an input signal, said phase modulation apparatus comprising: a modulation signal generation section that generates a first baseband modulation signal and a second baseband modulation signal based on said input signal; a phase locked loop circuit; and a switching section that switches between having said phase locked loop circuit generate a phase modulation signal by performing 1-point modulation and generate a phase modulation signal by performing 2-point modulation, by switching between inputting said first baseband modulation signal and inputting said first baseband modulation signal and said second baseband modulation signal, to said phase locked loop circuit, according to a communication mode setting signal that is inputted identifying one of a plurality of communication system modes.