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Chin. Phys. B, 2016, Vol. 25(3): 038401    DOI: 10.1088/1674-1056/25/3/038401

Linear theory of beam-wave interaction in double-slot coupled cavity travelling wave tube

Fang-ming He(何昉明)1,2, Wen-qiu Xie(谢文球)3,4, Ji-run Luo(罗积润)3, Min Zhu(朱敏)3, Wei Guo(郭炜)3
1. Radar Research (Beijing), Leihua Electronic Technology Institute, AVIC, Beijing 100017, China;
2. Aviation Key Laboratory of Science and Technology on AISSS, Wuxi 214063, China;
3. Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;
4. University of Chinese Academy of Sciences, Beijing 100039, China
Abstract  A three-dimensional model of the double-slot coupled cavity slow-wave structure (CCSWS) with a solid round electron beam for the beam-wave interaction is presented. Based on the “cold” dispersion, the “hot” dispersion equation is derived with the Maxwell equations by using the variable separation method and the field-matching method. Through numerical calculations, the effects of the electron beam parameters and the staggered angle between adjacent walls on the linear gain are analyzed.
Keywords:  double-slot coupled cavity slow-wave structure      beam-wave interaction      field matching method      small signal gain  
Received:  13 August 2015      Revised:  08 December 2015      Published:  05 March 2016
PACS:  84.40.Fe (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11205162).
Corresponding Authors:  Ji-run Luo     E-mail:

Cite this article: 

Fang-ming He(何昉明), Wen-qiu Xie(谢文球), Ji-run Luo(罗积润), Min Zhu(朱敏), Wei Guo(郭炜) Linear theory of beam-wave interaction in double-slot coupled cavity travelling wave tube 2016 Chin. Phys. B 25 038401

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