RADIO APPARATUS

摘要

A radio apparatus is disclosed which includes a modulator that modulates an input signal having an input offset voltage held by an input sample and hold circuit and outputs an output signal having an output offset voltage. A demodulator of the radio apparatus demodulates the output signal and outputs a demodulated signal. The radio apparatus also has an offset compensating circuit which makes the output offset voltage coincide with a demodulated offset voltage of the demodulated signal by comparing the input offset voltage with the demodulated signal in order to output a feedback signal to the modulator.