Sub-THz tunable push-push oscillators with FinFETs for wireless NoCs

Yunus Kelestemur, Soumyasanta Laha, Savas Kaya, Avinash Kodi, Hao Xin, Ahmed Louri

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

Abstract

This paper investigates the properties of sub-THz compact tunable push-push oscillator in 45 nm FinFET technology. The push-push oscillator is designed to operate at 250 GHz in a modified cross-coupled LC topology. Commanding the FinFET gates separately in independent-mode bestows the push-push oscillator with a simple and efficient means for ~5 GHz tunable performance without external varactors. Moreover, due to the increased transconductance, the stability criteria of oscillation is much relaxed in FinFET based design compared to that of an identical design in single gate MOSFET. No external capacitors are used to realize the LC tank unlike in conventional LC oscillator design. The higher gate-source capacitance of the FinFET is conveniently utilized to substitute for the external capacitor thus reducing parasitics and raising the resonant frequency. The phase noise of the oscillator varies from -82 to -76 dBc/Hz at 1 MHz offset between 0 V and 1 V back gate bias. The compact and tunable characteristics of the proposed sub-THz oscillator, make it ideally suitable for applications such as on-chip wireless interconnects required for kilo-core computing that have hard limits on area and power but requires precision tuning and high bandwidth for extremely fast data rates.

Original languageEnglish (US)
Title of host publication2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages332-335
Number of pages4
ISBN (Electronic)9781538673928
DOIs
Publication statusPublished - Jan 22 2019
Event61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018 - Windsor, Canada
Duration: Aug 5 2018Aug 8 2018

Publication series

NameMidwest Symposium on Circuits and Systems
Volume2018-August
ISSN (Print)1548-3746

Conference

Conference61st IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2018
CountryCanada
CityWindsor
Period8/5/188/8/18

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Kelestemur, Y., Laha, S., Kaya, S., Kodi, A., Xin, H., & Louri, A. (2019). Sub-THz tunable push-push oscillators with FinFETs for wireless NoCs. In 2018 IEEE 61st International Midwest Symposium on Circuits and Systems, MWSCAS 2018 (pp. 332-335). [8623958] (Midwest Symposium on Circuits and Systems; Vol. 2018-August). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSCAS.2018.8623958