中国物理B ›› 2013, Vol. 22 ›› Issue (10): 108401-108401.doi: 10.1088/1674-1056/22/10/108401

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

A novel slotted helix slow-wave structure for high power Ka-band traveling-wave tubes

刘鲁伟a, 魏彦玉a, 王少萌a, 侯艳a, 殷海荣a, 赵国庆a, 段兆云a, 徐进a, 宫玉彬a, 王文祥a, 杨明华b   

  1. a National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;
    b Beijing Vacuum Electronics Research Institute (BVERI), Beijing 100016, China
  • 收稿日期:2012-12-06 修回日期:2013-04-17 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61271029), the Natural Science Key Laboratory Foundation, and the Natural Science Fund for Distinguished Young Scholars of China (Grant No. 61125103).

A novel slotted helix slow-wave structure for high power Ka-band traveling-wave tubes

Liu Lu-Wei (刘鲁伟)a, Wei Yan-Yu (魏彦玉)a, Wang Shao-Meng (王少萌)a, Hou Yan (侯艳)a, Yin Hai-Rong (殷海荣)a, Zhao Guo-Qing (赵国庆)a, Duan Zhao-Yun (段兆云)a, Xu Jin (徐进)a, Gong Yu-Bin (宫玉彬)a, Wang Wen-Xiang (王文祥)a, Yang Ming-Hua (杨明华)b   

  1. a National Key Laboratory of Science and Technology on Vacuum Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;
    b Beijing Vacuum Electronics Research Institute (BVERI), Beijing 100016, China
  • Received:2012-12-06 Revised:2013-04-17 Online:2013-08-30 Published:2013-08-30
  • Contact: Wei Yan-Yu E-mail:yywei@uestc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61271029), the Natural Science Key Laboratory Foundation, and the Natural Science Fund for Distinguished Young Scholars of China (Grant No. 61125103).

摘要: A novel slotted helix slow-wave structure (SWS) is proposed to develop a high power, wide-bandwidth, and high reliability millimeter-wave traveling-wave tube (TWT). This novel structure, which has higher heat capacity than a conventional helix SWS, evolves from conventional helix SWS with three parallel rows of rectangular slots made in the outside of the helix tape. In this paper, the electromagnetic characteristics and the beam-wave interaction of this novel structure operating in the Ka-band are investigated. From our calculations, when the designed beam voltage and beam current are set to be 18.45 kV and 0.2 A, respectively, this novel circuit can produce over 700-W average output power in a frequency range from 27.5 GHz to 32.5 GHz, and the corresponding conversion efficiency values vary from 19% to 21.3%, and the maximum output power is 787 W at 30 GHz.

关键词: slotted helix, slow-wave structure, millimeter-wave, traveling-wave tube, beam-wave interaction

Abstract: A novel slotted helix slow-wave structure (SWS) is proposed to develop a high power, wide-bandwidth, and high reliability millimeter-wave traveling-wave tube (TWT). This novel structure, which has higher heat capacity than a conventional helix SWS, evolves from conventional helix SWS with three parallel rows of rectangular slots made in the outside of the helix tape. In this paper, the electromagnetic characteristics and the beam-wave interaction of this novel structure operating in the Ka-band are investigated. From our calculations, when the designed beam voltage and beam current are set to be 18.45 kV and 0.2 A, respectively, this novel circuit can produce over 700-W average output power in a frequency range from 27.5 GHz to 32.5 GHz, and the corresponding conversion efficiency values vary from 19% to 21.3%, and the maximum output power is 787 W at 30 GHz.

Key words: slotted helix, slow-wave structure, millimeter-wave, traveling-wave tube, beam-wave interaction

中图分类号:  (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))

  • 84.40.Fe
84.47.+w (Vacuum tubes) 07.57.Hm (Infrared, submillimeter wave, microwave, and radiowave sources)