Theoretical study of a W-band-covering frequency tunable gyrotron

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Li, Fanhong and Du, Chao-hai and Gao, Zi-chao and Pan, Shi and Zhang, Liang and Liu, Pu-kun and Ronald, K. and Cross, Adrian W. (2020) Theoretical study of a W-band-covering frequency tunable gyrotron. IEEE Transactions on Electron Devices, 67 (2). pp. 659-666. 8945210. ISSN 0018-9383 (https://doi.org/10.1109/TED.2019.2957040)

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Abstract

The gyrotron has already demonstrated the capability of generating high-power coherent electromagnetic (EM) radiation at high frequencies and finds application in fusion plasma heating and magnetic resonance spectroscopy. In this article, we propose a W-band gyrotron, which uses a so-called multimode switching scheme to realize ultrabroadband frequency tuning capability, nearly covering about 70% of the W-band (75-110 GHz) range. The tuning strategy used to suppress mode competition and stabilize gun parameters in such an open-cavity multimode switching gyrotron is presented. Theoretical study shows that the multimode switching gyrotron can generate a frequency tuning range much wider than a conventional step-tuning gyrotron or a single-mode tuning gyrotron. In addition, another technology that uses a slot-assisted circuit to select only axis-symmetrical TE operating modes is presented. Using such a circuit, a tuning range of about 25 GHz in the W-band is obtainable. The proposed multimode switching gyrotron is a promising ultrabroadband source for millimeter-wave and terahertz-wave applications.

ORCID iDs

Li, Fanhong, Du, Chao-hai, Gao, Zi-chao, Pan, Shi, Zhang, Liang ORCID logoORCID: https://orcid.org/0000-0002-6317-0395, Liu, Pu-kun, Ronald, K. ORCID logoORCID: https://orcid.org/0000-0002-8585-0746 and Cross, Adrian W. ORCID logoORCID: https://orcid.org/0000-0001-7672-1283;
  • Item type:Article
    ID code:70658
    Dates:
    Date
    Event
    29 February 2020
    Published
    30 December 2019
    Published Online
    28 November 2019
    Accepted
    Notes:© © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:28 Nov 2019 12:07
    Last modified:16 Dec 2024 02:10
    URI:https://strathprints.strath.ac.uk/id/eprint/70658
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