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

    8 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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