A 300-GHz SPST Switch with a new coupled-line topology in 65-nm CMOS technology

Jungsoo Kim, Sooyeon Kim, Kiryong Song, Jae Sung Rieh

    Research output: Contribution to journalReview articlepeer-review

    10 Citations (Scopus)

    Abstract

    A single-pole single-throw (SPST) switch operating around 300 GHz has been developed in this letter based on a 65-nm CMOS technology. The SPST switch adopts a novel coupled-line topology, in which MOSFETs are employed as a variable impedance component at the through- A nd coupled-ports to achieve a large isolation. Over the measured frequency band of 220-320 GHz, a minimum insertion loss of 3.9 dB (at 303 GHz) and a maximum isolation of 66 dB (at 250 GHz) were obtained. This achieved peak isolation is the largest value obtained so far beyond 100 GHz with a CMOS switch. An isolation larger than 39 dB was maintained for the entire frequency band measured. The measured return loss showed a maximum value of 29 dB at 312 GHz.

    Original languageEnglish
    Article number8638971
    Pages (from-to)215-218
    Number of pages4
    JournalIEEE Transactions on Terahertz Science and Technology
    Volume9
    Issue number2
    DOIs
    Publication statusPublished - 2019 Mar

    Bibliographical note

    Funding Information:
    This work was supported by the Institute for Information and Communications Technology Planning and Evaluation grant funded by the Korea government (MSIT) under Grant B0717-16-0047.

    Funding Information:
    Manuscript received October 22, 2018; revised December 20, 2018 and January 28, 2019; accepted February 4, 2019. Date of publication February 11, 2019; date of current version March 4, 2019. This work was supported by the Institute for Information & Communications Technology Planning & Evaluation grant funded by the Korea government (MSIT) under Grant B0717-16-0047. (Corresponding author: Jae-Sung Rieh.) The authors are with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail:, [email protected]; ryoungi@ korea.ac.kr; [email protected]; [email protected]).

    Publisher Copyright:
    © 2019 IEEE.

    Keywords

    • CMOS technology
    • THz
    • coupled line
    • single-pole single-throw (SPST)
    • switches

    ASJC Scopus subject areas

    • Radiation
    • Electrical and Electronic Engineering

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