Digital phase correlator
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United States of America Patent
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Aug 5, 1986
Grant Date -
N/A
app pub date -
Jan 4, 1985
filing date -
Jan 4, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital phase correlator compares the relative phase of two or more high-frequency clocks and corrects for any detected phase difference. The phase detector includes a pair of flip-flops whose output is an indication of which of the two clock pulses is leading the other. The output of the flip-flop controls, through a circuit including a rotating shift register and a multitap delay line, the delay introduced to one of the clocks in a manner such that the phase difference between the clocks is reduced to a minimum.
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