Design of Ultra Low Power CMOS Oscillators Using Active Inductors

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Abstract

The paper considers the design and tuning of oscillators using active inductors with ungrounded capacitor. The oscillator using this type of active inductor allows one to achieve high oscillation frequencies with low power consumption. Tuning of this oscillator using the variation of bias current or transistor sizes may result in moderate and even weak inversion of the transistors constituting the active inductor. In approaching the operation close to the threshold voltage, the transistor transconductance and the gate-source capacitor are reduced. The paper gives the design examples considering these particularities which are usually neglected and provides the recommendations on the limits of tuning currents and transistor geometry variations.

Original languageEnglish
Title of host publication2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages141-145
Number of pages5
ISBN (Electronic)9781665424615
DOIs
Publication statusPublished - 9 Aug 2021
Event2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021 - Virtual, East Lansing, United States
Duration: 9 Aug 202111 Aug 2021

Publication series

NameMidwest Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2021-August
ISSN (Print)1548-3746

Conference

Conference2021 IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2021
Country/TerritoryUnited States
CityVirtual, East Lansing
Period9/08/2111/08/21

Keywords

  • Active inductors
  • CMOS 130 nm
  • CMOS 65 nm
  • Integrated oscillator
  • Moderate inversion
  • Ultra-low power

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