PLL circuit, and radio communication apparatus equipped with same
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United States of America Patent
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Aug 20, 2013
Grant Date -
Apr 26, 2012
app pub date -
Jun 28, 2010
filing date -
Jul 2, 2009
priority date (Note) -
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Abstract
In an ADPLL circuit, on the basis of a gain of a digitally controlled oscillator estimated when a loop gain of a certain value is set in the loop filter and on the basis of a device parameter of the digitally controlled oscillator, the DCO gain estimation unit estimates a gain of the digitally controlled oscillator when a loop gain of another value is set in the loop filter.
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