Design of a feedback digitally controlled oscillator for linearity enhancement

Seok Min Jung, Janet Meiling Roveda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

This paper presents a novel feedback digitally controlled oscillator (DCO) to enhance a high linearity. Because of a negative feedback loop, the feedback DCO shows a linear relationship between an input digital control word and an output frequency. In addition, the feedback DCO has a low-pass and high-pass filtering effect on the input digital control word and a DCO noise, respectively. Hence, we are able to change and optimize the bandwidth of the feedback DCO according to the each noise sources. We designed the feedback DCO scheme in 130 nm CMOS technology. The peak-to-peak gain of the proposed feedback DCO is 17 MHz/LSB which is 96% smaller than a conventional DCO. The feedback DCO consumes 1.7 mW at 2.2 GHz output frequency.

Original languageEnglish (US)
Title of host publicationProceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages277-280
Number of pages4
ISBN (Electronic)9781479983636
DOIs
StatePublished - Sep 30 2015
Event11th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015 - Singapore, Singapore
Duration: Jun 1 2015Jun 4 2015

Publication series

NameProceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015

Other

Other11th IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015
CountrySingapore
CitySingapore
Period6/1/156/4/15

Keywords

  • digitally controlled oscillator (DCO)
  • feedback DCO
  • linearity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Jung, S. M., & Roveda, J. M. (2015). Design of a feedback digitally controlled oscillator for linearity enhancement. In Proceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015 (pp. 277-280). [7285104] (Proceedings of the 2015 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EDSSC.2015.7285104