Digital phase-locked loop
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United States of America Patent
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Nov 29, 2005
Grant Date -
Apr 14, 2005
app pub date -
May 8, 2001
filing date -
May 9, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A digital phase-locked loop with a digitally controlled oscillator is disclosed. The phase difference between a reference phase and a phase derived from the output phase of the oscillator is determined by a phase detector device and converted into a corresponding digital set value. The digital set value from the phase detector device is fed through a digital filter, to the digitally controlled oscillator, for the corresponding setting of the output phase thereof. By means of the above architecture any digital loop filter may be used.
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