Noise performance of fractional-order phase-locked loop

Reyad El-Khazali, Wajdi Ahmad, Zulfiqar A. Memon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

An analog fractional-order phase-locked loop (FOPLL) is investigated under noisy conditions. The FOPLL using fractional voltage-controlled oscillator (FVCO) and a fractional loop filter (FLF) outperforms its integer-order counterpart for both noisy and noiseless signals. Reducing the loop fractional orders increases both the locking and capturing ranges, and the bandwidth of the FOPLL, which substantially improves the loop transient behavior. However, an increase in the FOPLL bandwidth makes it susceptible to noisy signals. Hence, a compromise has to be made between the loop gain and the loop fractional order to alleviate the effect of noisy signals. The main points of this work are illustrated via simple numerical example.

Original languageBritish English
Title of host publicationICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications
Pages572-575
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007 - Dubai, United Arab Emirates
Duration: 14 Nov 200727 Nov 2007

Publication series

NameICSPC 2007 Proceedings - 2007 IEEE International Conference on Signal Processing and Communications

Conference

Conference2007 IEEE International Conference on Signal Processing and Communications, ICSPC 2007
Country/TerritoryUnited Arab Emirates
CityDubai
Period14/11/0727/11/07

Keywords

  • Fractional filters
  • Fractional VCO
  • Fractional-order systems
  • Phase-locked loop

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