Investigation of on-chip phase-noise reduction using self-injection technique on fully integrated frequency dividers

Sanghun Lee, Jusung Kim, Cam Nguyen

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

2 Scopus citations

Abstract

Significant phase-noise improvement is demonstrated using a self-injection technique on a fully integrated 0.18-μm CMOS divide-by-3 (1/3) injection-locked frequency divider (ILFD). The self-injection is realized with an odd-to-even harmonic converter followed by a feedback-amplifier. The self-injection 1/3 ILFD shows superior injection efficiency due to the increased self-injection signal which results in substantial phase noise reduction. The phase noise is improved by 14.77 dB at 1-MHz offset when the self-injection loop is enabled. The core of the 1/3 ILFD occupies 0.048-mm2 area and dissipates 18.2-mW from a 1.8-V power supply. The phase-noise reduction technique can be implemented for other kinds of ILFDs.

Original languageEnglish
Title of host publication2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings
Pages655-657
Number of pages3
DOIs
StatePublished - 2012
Event2012 Asia-Pacific Microwave Conference, APMC 2012 - Kaohsiung, Taiwan, Province of China
Duration: 4 Dec 20127 Dec 2012

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC

Conference

Conference2012 Asia-Pacific Microwave Conference, APMC 2012
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period4/12/127/12/12

Keywords

  • Injection-locked frequency divider
  • phase noise
  • PLL
  • RFIC
  • synthesizer

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