Study of a miniaturized dual-beam TWT with planar dielectric-rods-support uniform metallic meander line

被引：24

作者：

Wang, Hexin ^{[1
]}

Wang, Zhanliang ^{[1
]}

Li, Xinyi ^{[1
]}

He, Tenglong ^{[1
]}

Xu, Duo ^{[1
]}

Gong, Huarong ^{[1
]}

Tang, Tao ^{[1
]}

Duan, Zhaoyun ^{[1
]}

Wei, Yanyu ^{[1
]}

Gong, Yubin ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Vacuum Elect, Chengdu 610054, Peoples R China

来源：

PHYSICS OF PLASMAS | 2018年 / 25卷 / 06期

基金：

中国国家自然科学基金;

关键词：

SLOW-WAVE STRUCTURE;

D O I：

10.1063/1.5023776

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A dual-beam planar dielectric-rod-support uniform metallic meander line slow-wave structure (SWS) for high-efficiency Ka-band traveling wave tube (TWT) is proposed in this paper. Two dielectric rods are placed on both sides of metallic meander line to support it, instead of the dielectric substrate in the conventional microstrip meander line. Furthermore, it can not only solve the problem of the electron charge accumulation on microstrip but also leads to a bigger interaction impedance. According to particle-in-cell simulation results, a dual-sheet-beam planar dielectric-rod-support uniform metallic meander line TWT can get an output power of 330.2W at 38 GHz under the case of 10.6 kV beam voltage and 0.2 A beam current. The corresponding maximum gain and electron efficiency are 23.4 dB and 15.5%, respectively, where the length of whole SWS is only 20 mm. Published by AIP Publishing.

引用

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