ULTRA LOW POWER WIDEBAND NON-COHERENT BPSK DEMODULATOR USING 1ST ORDER SIDEBAND FILTERS WITH PHASE ZERO ALIGNMENT

摘要

Accoridng to an embodiment, the present invention relates to an ultralow power wideband non-coherent discrete phase deviation demodulator (BPSK) demodulating method, and a structure of a circuit for the same. The structure of the BPSK demodulating circuit comprises: a sideband separation and upper side band signal delay unit for separating a modulated signal into an upper sideband and a lower sideband through a first high band filter and first low band filter in which a blocking frequency is a carrier frequency, and outputting a lower side wideband analog signal and an analog signal delayed as much as 1/4 of a carrier frequency from an upper sideband analog signal; a data demodulating unit for demodulating digital data by latching a signal generated by a difference in the analog signals through a hysteresis circuit since the delayed upper sideband analog signal and lower sideband analog signal are arranged with a phase difference of 0^o, wherein the signal generated by a difference in the analog signals is an analog pulse signal shown corresponding to a phase changing part of a BPSK modulation signal; and a data clock restoring unit for generating a data clock by using a data signal and a signal digitalized from the lower sideband analog signal through a comparing unit.