Development of low phase noise digitally controlled CMOS ring oscillator with quadrature outputs

Prapto Nugroho, Ramesh Pokharel, Awinash Anand, Abishek Tomar, Haruichi Kanaya, Keiji Yoshida

Research output: Contribution to journalArticle

Abstract

This article present a development of low phase noise 14-bit digitally controlled oscillator (DCO) based on ring oscillator with quadrature output in 0.18-μm CMOS technology. Proposed design use digital control and feed-forward technique to obtain wider output swing and stable quadrature output on even number of stages respectively. Designed DCO has tuning frequency range from 212 MHz to 1 GHz. Phase noise at 1-MHz frequency offset is -123.93 dBc/Hz, which is the lowest among the recently published result.

Original languageEnglish
Pages (from-to)1479-1483
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume54
Issue number6
DOIs
Publication statusPublished - Jun 1 2012

Fingerprint

Phase noise
quadratures
CMOS
oscillators
output
rings
Tuning
frequency ranges
tuning

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Development of low phase noise digitally controlled CMOS ring oscillator with quadrature outputs. / Nugroho, Prapto; Pokharel, Ramesh; Anand, Awinash; Tomar, Abishek; Kanaya, Haruichi; Yoshida, Keiji.

In: Microwave and Optical Technology Letters, Vol. 54, No. 6, 01.06.2012, p. 1479-1483.

Research output: Contribution to journalArticle

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