PHASE DETECTION CIRCUITS AND METHODS

专利名称：PHASE DETECTION CIRCUITS AND

METHODS

发明人：ARYANFAR, Farshid,LEE, Hae-Chang,WERNER,

Carl

申请号：EP10844298.9申请日：20101230公开号：EP2526623A2公开日：20121128

摘要：A phase detector circuit compares the phases of first and second periodic inputsignals to generate an output signal. The phase detector includes a circuit that makestwo different combinations of the first and the second periodic input signals to generatethird and fourth periodic signals. This circuit causes the third periodic signal to be basedon a first combination of the first periodic signal and the second periodic signal thatimparts a first relative phase shift. The circuit causes the fourth periodic signal to bebased on a second combination of the first periodic signal and the second periodic signalto provide a different relative phase shift. The phase detector also includes a comparisoncircuit that compares a measure of the power of the third periodic signal to a measure ofthe power of the fourth periodic signal to generate the phase comparison output signal.

申请人：Rambus Inc.

地址：1050 Enterprise Way Suite 700 Sunnyvale, CA 94089 US

国籍：US

代理机构：Eisenführ, Speiser & Partner

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