Microwave coupler for W-band micro re-entrant square cavities

Paoloni, Claudio and Mineo, Mauro and Yin, Huabi and Zhang, Liang and He, Wenlong and Robertson, Craig W. and Ronald, Kevin and Phelps, Alan D.R. and Cross, Adrian W. (2016) Microwave coupler for W-band micro re-entrant square cavities. IET Microwaves, Antennas & Propagation, 10 (7). pp. 764-769. ISSN 1751-8725

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    Abstract

    Klystrons are vacuum electronic devices widely used for microwave amplification up to the millimetre-wave region. The opportunity to push the operating frequency of conventional klystrons above 30–40 GHz is limited by the fabrication difficulties of the cavities that have very small dimensions. A high order mode micro re-entrant square cavity was purposely devised to be compatible with the available micro fabrication processes and represents a viable solution for the design of millimetre-wave klystrons. In this study, a coupler to correctly excite the higher order mode of the square re-entrant cavities for W-band operation is proposed. The design of the proposed novel coupler structure has been validated by realisation and measurement of a scaled X-band prototype. The post-realisation tuning methods adopted to improve the matching of the high order mode are also presented.

    Author(s):Paoloni, Claudio, Mineo, Mauro, Yin, Huabi ORCID logoORCID: https://orcid.org/0000-0002-6635-9759, Zhang, Liang ORCID logoORCID: https://orcid.org/0000-0002-6317-0395, He, Wenlong ORCID logoORCID: https://orcid.org/0000-0001-7018-0527, Robertson, Craig W. ORCID logoORCID: https://orcid.org/0000-0002-3552-466X, Ronald, Kevin ORCID logoORCID: https://orcid.org/0000-0002-8585-0746, Phelps, Alan D.R. ORCID logoORCID: https://orcid.org/0000-0002-1100-1012 and Cross, Adrian W. ORCID logoORCID: https://orcid.org/0000-0001-7672-1283
    Item type:Article
    ID code:56379
    Notes:This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antennas & Propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.
    Keywords:klystrons, microwave devices, vacuum electronic device, W-band micro re-entrant square cavity, millimetre-wave klystron, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 May 2016 14:46
    Last modified:11 Jan 2020 04:42
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/56379
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