High-order mode interaction structure for a W-band CW sheet beam extended interaction klystron

被引：2

作者：

Jin, Qi ^{[1
,2
]}

Geng, Zhihui ^{[1
]}

Zhang, Rui ^{[1
]}

Xie, Bingchuan ^{[1
,2
]}

Wang, Shuzhong ^{[1
]}

Liao, Yunfeng ^{[1
]}

Yang, Xiudong ^{[1
]}

Xu, Shouxi ^{[1
]}

机构：

[1] Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Sci & Technol High Power Microwave Sources, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Elect Elect & Commun Engn, Beijing 100049, Peoples R China

来源：

AIP ADVANCES | 2022年 / 12卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CIRCUIT;

D O I：

10.1063/5.0122835

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

To solve the problem of mode competition in high-order working modes, this paper presents a fast design method based on the TM31-2 pi mode for the dumbbell shaped extended interaction cavity. Based on the equivalent circuit theory, the high-frequency characteristics of the structure are studied. In addition, we propose a W-band continuous wave sheet beam extended interaction klystron high-frequency circuit. The circuit was driven by a 20 kV and 0.85 A sheet electron beam, with a 3.2 x 0.3 mm(2) section. The beam was focused by a 0.8 T permanent magnet system. The high-frequency system adopts five dumbbell shaped five-gap cavities, and the output system adopts a symmetrical output waveguide. The 3D particle-in-cell simulation shows that more than 1.5 kW power can be obtained at an input power of 0.12 W, and the electron efficiency and gain are 9.2% and 41.2 dB, respectively. (C) 2022 Author(s).

引用

页数：7

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