中国物理B ›› 2009, Vol. 18 ›› Issue (6): 2445-2451.doi: 10.1088/1674-1056/18/6/054

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7.8GHz power generation device design using a rectangular dielectric-loaded waveguide

路志刚, 宫玉彬, 魏彦玉, 徐进, 高鹏, 王文祥   

  1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2008-05-03 修回日期:2008-10-20 出版日期:2009-06-20 发布日期:2009-06-20
  • 基金资助:
    Project supported by the State Key Program of National Natural Science Foundation of China (Grant No 60532010).

7.8GHz power generation device design using a rectangular dielectric-loaded waveguide

Lu Zhi-Gang(路志刚)†, Gong Yu-Bin(宫玉彬), Wei Yan-Yu(魏彦玉), Xu Jin(徐进), Gao Peng(高鹏), and Wang Wen-Xiang(王文祥)   

  1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2008-05-03 Revised:2008-10-20 Online:2009-06-20 Published:2009-06-20
  • Supported by:
    Project supported by the State Key Program of National Natural Science Foundation of China (Grant No 60532010).

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摘要： In this paper, we present a design where a bunched relativistic electron beam traversing inside the rectangular dielectric-loaded (DL) waveguide is used as a high power microwave generation device. Two kinds of methods of calculating the electromagnetic (EM) field excited by a bunched beam are introduced, and in the second method the calculation of EM pulse length is discussed in detail. The desired operating mode is the LSM_11 due to its strong interaction with the electron beam. For the designed 7.8~GHz operating frequency, with a 100~nC/bunch drive train of electron bunches separated by 0.769~ns, we find that high gradient (>30~MV/m) and high power (>160~MW) can be generated. An output coupler is also designed which is able to extract the generated power to standard waveguides with a 94% coupling efficiency.

关键词: dielectric-loaded, rectangular waveguide, high power, relativistic electron beam

Abstract: In this paper, we present a design where a bunched relativistic electron beam traversing inside the rectangular dielectric-loaded (DL) waveguide is used as a high power microwave generation device. Two kinds of methods of calculating the electromagnetic (EM) field excited by a bunched beam are introduced, and in the second method the calculation of EM pulse length is discussed in detail. The desired operating mode is the LSM11 due to its strong interaction with the electron beam. For the designed 7.8 GHz operating frequency, with a 100 nC/bunch drive train of electron bunches separated by 0.769 ns, we find that high gradient (>30 MV/m) and high power (>160 MW) can be generated. An output coupler is also designed which is able to extract the generated power to standard waveguides with a 94% coupling efficiency.

Key words: dielectric-loaded, rectangular waveguide, high power, relativistic electron beam

中图分类号:  (Waveguides, transmission lines, striplines)

  • 84.40.Az
41.75.Ht (Relativistic electron and positron beams)