Phase detection circuit and differential detection

专利名称：Phase detection circuit and differential

detection demodulator

发明人：Kojima, Toshiharu, c/o Mitsubishi Denki K.K.申请号：EP97120803.8申请日：19921224公开号：EP0831625A2公开日：19980325

专利附图：

摘要：A phase detection circuit (400) for detecting a phase shift of an input signalrelative to a phase referenced signal and for generating a relative phase signal includes: ahalf-period detection means (901) consisting of a delay element (401) and an exclusives

OR element (402); a phase reference signal generation means (902) consisting of amodulo 2N counter (403); and a phase shift measurement means (903) consisting of aphase inversion corrector (500) and a D flip-flop array (404). A delay element (40) delaysthe relative phase signal by one symbol period and a subtractor (41) outputs the phasedifference signal representing the phase transition over each symbol period of thereceived signal. A decision circuit (42) obtains the demodulated data from the phasedifference signal.

申请人：MITSUBISHI DENKI KABUSHIKI KAISHA

地址：2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100 JP

国籍：JP

代理机构：Pfenning, Meinig & Partner

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