Phase detector
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United States of America Patent
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-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Jul 31, 1987
filing date -
Aug 2, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A phase detector for indicating the magnitude of a phase difference between two electrical signals applied to it, is provided with means for introducing a deliberate phase shift into one of the signals so that the measured phase difference never closely approaches 0.degree. or a multiple of 360.degree.. The detector is capable of providing a smooth output signal over a very wide range of phase difference which can exceed many multiples of 360.degree.. Furthermore, the phase comparator is never required to perform measurements in those regions of least accuracy close to zero phase difference.
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