Psk demodulator using time to digital converter

PURPOSE: A PSK demodulator using a time to digital converter is provided to remove a synchronous circuit for synchronizing a PSK signal and a clock signal by performing sampling according to asynchronous clock signal in a PSK signal. CONSTITUTION: A phase deviation demodulator comprises a band pass filter(10), an amplitude restriction(20), a poly-phase clock generating part(30), and a time to digital converter(40). The band pass filter filters the PSK signal inputted into a phase deviation demodulator and passes through only a recognizable signal band. The amplitude restriction restricts the amplitude of the PSK signal filtered through the band pass filter. The poly-phase clock generating part generates M clock signal having M phases. The poly-phase clock generating part controls the resolution of the time to digital converter by controlling the frequency and phase number of the clock signal.