SIGNAL PROCESSING DEVICE AND DIRECT CONVERSION RECEPTION DEVICE

摘要

A base band signal input from an input terminal (10) has a DC component which is blocked off by a high pass filter (12). When the signal which has passed through the high pass filter (12) has a voltage out of a predetermined set voltage range, the signal of the voltage portion out of the voltage range is extracted by a signal extraction circuit (15). According to the signal extracted, the DC potential of the base band signal is adjusted at a feedback point (17).