Frequency synthesizer and associated method
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United States of America Patent
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Jun 10, 2014
Grant Date -
Apr 18, 2013
app pub date -
Apr 18, 2012
filing date -
Oct 17, 2011
priority date (Note) -
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Abstract
A frequency synthesizer includes an oscillator for providing an RF clock, a phase shifter arranged to provide a shifted reference clock by changing phase of a frequency reference clock, and a time-to-digital converter (TDC) for producing a digital TDC output by quantizing a time difference between said RF clock and said shifted reference clock; wherein a range of said TDC covers significantly less than a full range of said RF clock period. An associated method is also provided.
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