Direct digital synthesizer with high resolution tracker
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United States of America Patent
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Oct 5, 1999
Grant Date -
N/A
app pub date -
May 2, 1997
filing date -
May 2, 1997
priority date (Note) -
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Abstract
A chirp direct digital synthesizer is formed with a phase and frequency tracker circuit to provide both enhanced resolution and reduced power consumption. The phase and frequency tracker circuit operates at a sub-synchronous clock rate and provides periodic phase and frequency correction data to the direct digital synthesizer. The phase and frequency tracker circuit is suitable for both continuous wave and chirp direct digital synthesizer operation.
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