TRANSMISSION MODULATION APPARATUS, COMMUNICATION DEVICE, AND MOBILE WIRELESS UNIT

摘要

A transmission modulation apparatus using a polar modulation of the two-point modulation scheme that can complete the timing adjustment of a BB phase modulation signal and a BB amplitude modulation signal in a short time. In a phase modulating part (10) using a PLL circuit to perform a two-point modulation, a switch (17) is provided to change the PLL circuit to an open loop, and when a first delay part (5) is used to correct the synchronization deviation of the BB phase modulation signal and the BB amplitude modulation signal, the switch (17) is turned off to change the PLL circuit to the open loop.