Phase frequency detector and accurate low jitter high frequency wide-band phase lock loop
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United States of America Patent
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Oct 8, 2019
Grant Date -
Dec 28, 2017
app pub date -
Jan 22, 2016
filing date -
Jan 24, 2015
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Abstract
A novel phase locked loop design utilizing novel phase-frequency detector, charge pump, loop filter and voltage controlled oscillator is disclosed. The phase-frequency detector includes a dual reset D-flip flop for use in multi-GHz phase locked loops. Traditional dead zone issues associated with phase frequency detector are improved/addressed by use with a charge transfer-based PLL charge pump.
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