Frequency synthesizer using voltage-controlled oscillator (VCO) core of wideband synthesizer with integrated VCO

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United States of America Patent

PATENT NO 11870451
SERIAL NO

18084805

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Abstract

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A frequency synthesizer employs a combination of a low divide ratio divider phase-locked loop (PLL) and a wide band, on-chip voltage-controlled oscillator (VCO). To reduce phase noise, low divide ratio phase detection is employed. By using the off-chip PLL with a bank of on-chip VCOs, the frequency synthesizer may have enhanced frequency stability and avoid having to include an acquisition circuit. A separation between the PLL and VCO may reduce integer boundary spurs (IBS) eliminating or reducing a need for a filter bank and switches reducing a complexity of the frequency synthesizer.

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Patent Owner(s)

  • VIAVI SOLUTIONS INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
An, Byung-Kuk Seoul, KR 4 10
Hong, Young-Joung Seoul, KR 1 0
Park, Hyoung-Kyoun Seoul, KR 1 0

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