Method and apparatus for measuring the frequency of a received signal
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United States of America Patent
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Jul 6, 2010
Grant Date -
Sep 4, 2008
app pub date -
Sep 13, 2005
filing date -
Sep 13, 2004
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Abstract
A method of measuring the frequency of a received signal comprising the steps of: generating a first phase signal by digitising the phase of the received signal; delaying the first phase signal by a predetermined amount to generate a second phase signal; calculating a phase difference between the first and the second phase signals; and calculating the frequency of the input signal from the phase difference.
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