Oversized coaxial output cavity for Ka band relativistic klystron

被引：4

作者：

Li, Shifeng ^{[1
,2
]}

Duan, Zhaoyun ^{[1
]}

Huang, Hua ^{[2
]}

Wang, Fei ^{[1
]}

Wang, Xin ^{[1
]}

Liu, Zhenbang ^{[2
]}

He, Hu ^{[2
]}

Wang, Zhanliang ^{[1
]}

Gong, Yubin ^{[1
]}

机构：

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

[2] China Acad Engn Phys, Inst Appl Elect, Sci & Technol High Power Microwave Lab, Mianyang, Peoples R China

来源：

JOURNAL OF ENGINEERING-JOE | 2018年 / 14期

基金：

中国国家自然科学基金;

关键词：

Q-factor; klystrons; cavity resonators; microwave amplifiers; efficiency; 36; percent; power; 1; 08; GW; RKA; electronic efficiency; overmoded ratio; external quality factor; CHIPIC; particle-in-cell software; coupler; three-gap resonator; Ka band relativistic klystron amplifier; oversized coaxial output cavity;

D O I：

10.1049/joe.2018.0107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, an oversized coaxial output cavity is proposed for a Ka band relativistic klystron amplifier (RKA). It consists of a three-gap resonator and a coupler. To ensure the concentricity, the double-row supporting rods are used in the output cavity. The parameters of the output cavity are obtained through theoretical analysis and CST simulation. In addition, the authors evaluate the performance of the output cavity by using particle-in-cell software CHIPIC. They investigate the influences of the period length and the external quality factor on the output power. Furthermore, they study the effect of the overmoded ratio on power and electronic efficiency. The simulation shows that the output power reaches 1.08 GW and electronic efficiency is 36.0%. The simulated results indicate that the proposed output cavity can be used in the RKA with GW-level power at the Ka band.

引用

页码：678 / 681

页数：4

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