Study of a Wideband TE°21/TE°01 Mode Converter for Subterahertz Gyrotron Traveling-Wave Tubes

Guoxiang Shu; Xinlun Xie; Huaxing Pan; Xingxing Du; Jiacai Liao; Shaochen Ma; Jiawei Tang; Siyuan Liu; Mingze Li; Huabi Yin; Cunjun Ruan; Wenlong He

doi:10.1109/TPS.2023.3287351

Study of a Wideband TE°₂₁/TE°₀₁ Mode Converter for Subterahertz Gyrotron Traveling-Wave Tubes

Guoxiang Shu
, Xinlun Xie
, Huaxing Pan
, Xingxing Du
, Jiacai Liao
, Shaochen Ma
, Jiawei Tang
, Siyuan Liu
, Mingze Li
, Huabi Yin
, Cunjun Ruan
, Wenlong He^*

^*Corresponding author for this work

School of Electronic and Information Engineering

Shenzhen University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

A novel design methodology of a TE°21 /TE°01 mode converter for gyrotron traveling-wave tubes (gyro-TWTs) is presented in this article. This type of mode converter is characterized by its broad bandwidth. The proposed mode converter consists of two-mode conversion sections (TE°10 -TE°20 and TE°20 -TE°21 /TE°01 ) and an overmoded coupling section. The feeding TE°10 mode is first converted into the TE°20 mode, then coupled by using an overmoded coupling structure, and finally converted into the desired TE°21 /TE°01 mode. For verification, two H -band (220-325 GHz) back-to-back joined TE°21 /TE°01 mode converter prototypes were microfabricated and measured. The cold test showed that a measured 3-/2-dB transmission bandwidth of 58.9 GHz (235.2-294.1 GHz)/56.3 GHz (235.2-291.5 GHz) for the TE°21 /TE°01 mode converter was obtained.

Original language	English
Pages (from-to)	2105-2111
Number of pages	7
Journal	IEEE Transactions on Plasma Science
Volume	51
Issue number	7
DOIs	https://doi.org/10.1109/TPS.2023.3287351
State	Published - 1 Jul 2023

Keywords

Gyrotron traveling wave tubes (gyro-TWTs)
mode converter
terahertz band

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10.1109/TPS.2023.3287351

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@article{341da1c329534ef7ab91a53c0b16381a,

title = "Study of a Wideband TE°21/TE°01 Mode Converter for Subterahertz Gyrotron Traveling-Wave Tubes",

abstract = "A novel design methodology of a TE°21 /TE°01 mode converter for gyrotron traveling-wave tubes (gyro-TWTs) is presented in this article. This type of mode converter is characterized by its broad bandwidth. The proposed mode converter consists of two-mode conversion sections (TE°10 -TE°20 and TE°20 -TE°21 /TE°01 ) and an overmoded coupling section. The feeding TE°10 mode is first converted into the TE°20 mode, then coupled by using an overmoded coupling structure, and finally converted into the desired TE°21 /TE°01 mode. For verification, two H -band (220-325 GHz) back-to-back joined TE°21 /TE°01 mode converter prototypes were microfabricated and measured. The cold test showed that a measured 3-/2-dB transmission bandwidth of 58.9 GHz (235.2-294.1 GHz)/56.3 GHz (235.2-291.5 GHz) for the TE°21 /TE°01 mode converter was obtained.",

keywords = "Gyrotron traveling wave tubes (gyro-TWTs), mode converter, terahertz band",

author = "Guoxiang Shu and Xinlun Xie and Huaxing Pan and Xingxing Du and Jiacai Liao and Shaochen Ma and Jiawei Tang and Siyuan Liu and Mingze Li and Huabi Yin and Cunjun Ruan and Wenlong He",

note = "Publisher Copyright: {\textcopyright} 1973-2012 IEEE.",

year = "2023",

month = jul,

day = "1",

doi = "10.1109/TPS.2023.3287351",

language = "英语",

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TY - JOUR

T1 - Study of a Wideband TE°21/TE°01 Mode Converter for Subterahertz Gyrotron Traveling-Wave Tubes

AU - Shu, Guoxiang

AU - Xie, Xinlun

AU - Pan, Huaxing

AU - Du, Xingxing

AU - Liao, Jiacai

AU - Ma, Shaochen

AU - Tang, Jiawei

AU - Liu, Siyuan

AU - Li, Mingze

AU - Yin, Huabi

AU - Ruan, Cunjun

AU - He, Wenlong

PY - 2023/7/1

Y1 - 2023/7/1

N2 - A novel design methodology of a TE°21 /TE°01 mode converter for gyrotron traveling-wave tubes (gyro-TWTs) is presented in this article. This type of mode converter is characterized by its broad bandwidth. The proposed mode converter consists of two-mode conversion sections (TE°10 -TE°20 and TE°20 -TE°21 /TE°01 ) and an overmoded coupling section. The feeding TE°10 mode is first converted into the TE°20 mode, then coupled by using an overmoded coupling structure, and finally converted into the desired TE°21 /TE°01 mode. For verification, two H -band (220-325 GHz) back-to-back joined TE°21 /TE°01 mode converter prototypes were microfabricated and measured. The cold test showed that a measured 3-/2-dB transmission bandwidth of 58.9 GHz (235.2-294.1 GHz)/56.3 GHz (235.2-291.5 GHz) for the TE°21 /TE°01 mode converter was obtained.

AB - A novel design methodology of a TE°21 /TE°01 mode converter for gyrotron traveling-wave tubes (gyro-TWTs) is presented in this article. This type of mode converter is characterized by its broad bandwidth. The proposed mode converter consists of two-mode conversion sections (TE°10 -TE°20 and TE°20 -TE°21 /TE°01 ) and an overmoded coupling section. The feeding TE°10 mode is first converted into the TE°20 mode, then coupled by using an overmoded coupling structure, and finally converted into the desired TE°21 /TE°01 mode. For verification, two H -band (220-325 GHz) back-to-back joined TE°21 /TE°01 mode converter prototypes were microfabricated and measured. The cold test showed that a measured 3-/2-dB transmission bandwidth of 58.9 GHz (235.2-294.1 GHz)/56.3 GHz (235.2-291.5 GHz) for the TE°21 /TE°01 mode converter was obtained.

KW - Gyrotron traveling wave tubes (gyro-TWTs)

KW - mode converter

KW - terahertz band

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M3 - 文章

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IS - 7

ER -

Study of a Wideband TE°₂₁/TE°₀₁ Mode Converter for Subterahertz Gyrotron Traveling-Wave Tubes

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