Fractional-R frequency synthesizer
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United States of America Patent
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Jun 17, 2008
Grant Date -
Mar 24, 2005
app pub date -
Oct 31, 2002
filing date -
Oct 31, 2001
priority date (Note) -
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Abstract
A fractional-R synthesizer having a divider with rational increments and configurable in rational steps able to generate a plurality of frequencies in rational increments from a reference frequency. A voltage-controlled oscillator frequency (f.sub.VCO) is related to the reference frequency (f.sub.REF) by: f.sub.REF=f.sub.VCO/R.sub.AVG, where R.sub.AVG is the average value of the rational divide value 'R' over a large number of reference cycles.
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