Instantaneous frequency measurement apparatus and method
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United States of America Patent
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Dec 1, 1992
Grant Date -
N/A
app pub date -
Nov 15, 1991
filing date -
Nov 15, 1991
priority date (Note) -
Expired
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Abstract
An apparatus and method for measuring the frequencies of a pair of signals simultaneously present in a composite signal, comprising the steps of includes components for squaring the composite signal, filtering the squared signal for separating a first pass band and a higher frequency second pass band, instantaneously measuring the frequencies of the first and second pass bands and determining the individual frequencies of the pair of signals from the measured frequencies of the first and second pass bands.
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