Fractional-N PLL with multi-element fractional divider for noise reduction

Arindam Sanyal, Xueyi Yu, Yanlong Zhang, Nan Sun

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


A novel technique to suppress quantisation noise in a fractional-N phase-locked loop (PLL) using a fine-resolution multi-element fractional divider is presented. The proposed technique suppresses noise uniformly over the entire frequency range. It is mostly digital and is applicable for both analogue and digital PLLs. The proposed technique with an eight-element fractional divider can suppress the quantisation noise by 18 dB compared with a conventional fractional-N PLL.

Original languageEnglish (US)
Pages (from-to)809-810
Number of pages2
JournalElectronics Letters
Issue number10
StatePublished - May 12 2016
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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