Investigation of low-voltage broadband overmoded folded rectangular coaxial waveguide TWT at W-band

被引：0

作者：

Xu Duo ^{[1
]}

Wang Shao-Meng ^{[2
]}

Shao Wei ^{[1
]}

He Teng-Long ^{[1
]}

Wang He-Xin ^{[1
]}

Tang Tao ^{[1
]}

Gong Hua-Rong ^{[1
]}

Lu Zhi-Gang ^{[1
]}

Wang Zhan-Liang ^{[1
]}

Duan Zhao-Yun ^{[1
]}

Wei Yan-Yu ^{[1
]}

Feng Jin-Jun ^{[3
]}

Gong Yu-Bin ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China

[2] Nanyang Technol Univ, Satellite Res Ctr, Singapore 639798, Singapore

[3] Beijing Vacuum Elect Res Inst, Beijing 100015, Peoples R China

来源：

JOURNAL OF INFRARED AND MILLIMETER WAVES | 2020年 / 39卷 / 04期

基金：

中国国家自然科学基金;

关键词：

overmoded traveling wave tube; planar slow wave structure; broadband amplifier; folded coaxial waveguide; DESIGN;

D O I：

10.11972/j.issn.1001-9014.2020.04.005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

To develop high frequency, broad bandwidth and low voltage traveling wave tube (TWT) the folded rectangular coaxial waveguide slow wave structure (FRCW-SWS) is proposed in this paper. Operating at overmoded condition, the proposed FRCW-SWS has relatively high operating frequency and acceptable transmission characteristics. A double ridge-loaded waveguide-to-coaxial-waveguide converter is designed and applied as the input/output coupler to incorporate the broadband characteristics of the FRCW-SWS. The hot performance of this ovennoded FRCW-TWT at W-band is investigated using particle-in-cell (PIC) simulation. The simulation results indicate that the output power can be over 13. 7 W in the frequency range of 76 - 110 GHz , when the length of the SWS , the beam voltage and beam current are 32 nun, 3230 V and 150mA, respectively. The maximal output power is about 27. 4 W at the frequency of 108 GHz , corresponding to the RF efficiency of 5. 65%.

引用

页码：422 / 429

页数：8

共 23 条

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