Fractional-N phase locked loop delta sigma modulator noise reduction using charge pump interpolation

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United States of America Patent

PATENT NO 10177772
APP PUB NO 20180019756A1
SERIAL NO

15272307

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Abstract

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A phase locked loop has a frequency divider included in a feedback path. The frequency divider generates a first output and a delayed output. The phase locked loop also includes a charge pump to generate an output current based on the first output and the delayed output of the frequency divider.

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Patent Owner(s)

Patent OwnerAddress
QUALCOMM INCORPORATED5775 MOREHOUSE DRIVE SAN DIEGO CA 92121-1714

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bossu, Frederic San Diego, US 39 482
Chen, Xinhua San Diego, US 44 134
Tang, Yiwu San Diego, US 50 309
Zhuang, Jingcheng San Diego, US 30 298

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