A 253-280 GHz Wide Tuning Range VCO with -3.5 dBm Peak Output Power in 40-nm CMOS

Surajit Kumar Nath, Junghwan Yoo, Jae Sung Rieh, Daekeun Yoon

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

5 Citations (Scopus)

Abstract

This paper presents a wide tuning range push-push voltage-controlled oscillator (VCO) at the sub-THz frequency bands. With the introduction of a novel capacitive splitting feedback (CSF) technique and tunable source degeneration (TSD) network, the proposed VCO can simultaneously archive a wide tuning range while maintaining a high output power. The CSF technique improves the oscillation frequency by reducing the effective transistor capacitances, and a wide tuning range is achieved through the TSD network without employing varactors. The proposed VCO is fabricated in a 40-nm digital CMOS process. It shows a -3.5 dBm peak output power with 1.35% DC-to-RF efficiency and a wide tuning range of 10.16% at a center frequency of 267.2 GHz.

Original languageEnglish
Title of host publicationESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages299-302
Number of pages4
ISBN (Electronic)9781665437479
DOIs
Publication statusPublished - 2021 Sept 13
Event47th IEEE European Solid State Circuits Conference, ESSCIRC 2021 - Virtual, Online, France
Duration: 2021 Sept 62021 Sept 9

Publication series

NameESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings

Conference

Conference47th IEEE European Solid State Circuits Conference, ESSCIRC 2021
Country/TerritoryFrance
CityVirtual, Online
Period21/9/621/9/9

Bibliographical note

Funding Information:
The authors would like to thank Taiwan Semiconductor Research Institute (TSRI), Taiwan, R.O.C for the chip fabrication. This work is financially supported by the Ministry of Science and Technology (MOST), Taiwan, R.O.C (MOST 109-2221-E-009-140-).

Publisher Copyright:
© 2021 IEEE.

Keywords

  • CMOS
  • VCO
  • push-push oscillator
  • source degeneration
  • sub-THz

ASJC Scopus subject areas

  • Artificial Intelligence
  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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