An example wireless communication device is provided with a binarizing
circuit which precisely carries out binarization even if a level of an
input signal is kept substantially consistent for a long period. The
binarizing circuit includes: a comparator which outputs a data slicer
output by comparing a generated signal generated from a demodulated
signal with 0 level; a feedback circuit which detects a direct current
level of the generated signal, thereby outputting an inversion signal of
the direct current level; and an adder circuit which outputs the
generated signal by adding the inversion signal to the demodulated
signal. Since an offset canceller of the feedback circuit outputs 0 to an
integration circuit when the generated signal falls within a
predetermined range, the generated signal does not follow the demodulated
signal even if the demodulated signal is kept at a substantially
consistent level, thereby reducing errors.