FREQUENCY CORRECTION CIRCUIT, FREQUENCY CORRECTION METHOD, AND WIRELESS COMMUNICATION APPARATUS USING SAME

摘要

A frequency correction circuit which is able to correct frequency errors of received signals with good precision and prevent deterioration of demodulated signals while further minimizing circuit size increase.  The frequency correction circuit includes demodulating means for imparting preset frequency offsets corresponding to a plurality of frequency errors to received wireless signals and demodulating the signals using a plurality of preset in-phase addition lengths, and a selecting means for selecting one demodulated signal from a plurality of demodulated signals demodulated by these demodulating means.