Rights statement: This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antenas and Propagation and is subject to Institution of Engineering and Technology Copyright 2016. The copy of record is available at IET Digital Library
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Microwave coupler for W-band micro re-entrant square cavities
AU - Paoloni, Claudio
AU - Mineo, Mauro
AU - Yin, Huabi
AU - Zhang, Liang
AU - He, Wenlong
AU - Robertson, Craig W.
AU - Ronald, Kevin
AU - Phelps, Alan D.R.
AU - Cross, Adrian W.
N1 - This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antenas and Propagation and is subject to Institution of Engineering and Technology Copyright 2016. The copy of record is available at IET Digital Library
PY - 2016/5/15
Y1 - 2016/5/15
N2 - Klystrons are vacuum electronic devices widely used for microwave amplification up to the millimetre-waveregion. The opportunity to push the operating frequency of conventional klystrons above 30–40 GHz is limited by the 20 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 methods25 adopted to improve the matching of the high order mode are also presented.
AB - Klystrons are vacuum electronic devices widely used for microwave amplification up to the millimetre-waveregion. The opportunity to push the operating frequency of conventional klystrons above 30–40 GHz is limited by the 20 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 methods25 adopted to improve the matching of the high order mode are also presented.
U2 - 10.1049/iet-map.2015.0681
DO - 10.1049/iet-map.2015.0681
M3 - Journal article
VL - 10
SP - 764
EP - 769
JO - IET Microwaves, Antennas and Propagation
JF - IET Microwaves, Antennas and Propagation
SN - 1751-8733
IS - 7
ER -