A differential-ring-oscillator with up to 35 dBc/Hz phase noise improving amplitude feedback loop for ultra low power systems

Peter Toth, Hiroki Ishikuro

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    This work presents a novel idea to dynamically control a differential ring oscillators biasing in order to improve the phase noise performance in the ultra low power domain. This proposed feedback system can be flexibly applied on any type of fully-differential ring oscillator with a tail current source. The following paper covers theoretical and simulative considerations to prove the feasibility of this idea. Finally measurements of a 180 nm standard CMOS integrated prototype system depict the implementability of this idea. A phase noise improvement of up to 35 dBc/Hz can be observed with an active control loop. Moreover, the tuning range of the implemented ring oscillator is extended by 434% in contrast to fixed bias operation. These values are measured at a minimum oscillation power consumption of 55 pW/Hz.

    本文言語English
    ホスト出版物のタイトル2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ350-353
    ページ数4
    ISBN(電子版)9781728109961
    DOI
    出版ステータスPublished - 2019 11
    イベント26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019 - Genoa, Italy
    継続期間: 2019 11 272019 11 29

    出版物シリーズ

    名前2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019

    Conference

    Conference26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
    CountryItaly
    CityGenoa
    Period19/11/2719/11/29

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Control and Optimization
    • Computer Networks and Communications
    • Hardware and Architecture

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