中国物理B ›› 2009, Vol. 18 ›› Issue (10): 4281-4286.doi: 10.1088/1674-1056/18/10/031

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Magnetically insulated transmission line oscillator oscillated in a modified HEM11 mode

王冬, 陈代兵, 秦奋, 范植开   

  1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
  • 收稿日期:2009-01-13 修回日期:2009-02-24 出版日期:2009-10-20 发布日期:2009-10-20
  • 基金资助:
    Project supported by the Science Foundation of the China Academy of Engineering Physics (Grant No 2008B0402046).

Magnetically insulated transmission line oscillator oscillated in a modified HEM11 mode

Wang Dong(王冬)†, Chen Dai-Bing(陈代兵), Qin Fen(秦奋), and Fan Zhi-Kai(范植开)   

  1. Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621900, China
  • Received:2009-01-13 Revised:2009-02-24 Online:2009-10-20 Published:2009-10-20
  • Supported by:
    Project supported by the Science Foundation of the China Academy of Engineering Physics (Grant No 2008B0402046).

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摘要： This paper puts forward a novel magnetically insulated transmission line oscillator (MILO) for the first time which takes a modified HEM11 mode as its main interaction mode. The excitation of the oscillation mode is made possible by carefully adjusting the arrangements of each resonant cavity in a two-dimensional (2-D) slow wave structure. The high frequency characteristics are analyzed and a PIC simulation is carried out; the detailed results are discussed to get a better understanding of this new MILO. Employing an electron beam of about 441~kV and 39.7~kA, it finds that the modified HEM11 mode MILO generates a high power microwave output of about 1.47~GW at 1.45~GHz. The power conversion efficiency is about 8.4% and the generated microwave is in a TE11-like circularly polarized mode; its polarization direction is decided by the rotation direction of the SWS.

Abstract: This paper puts forward a novel magnetically insulated transmission line oscillator (MILO) for the first time which takes a modified HEM11 mode as its main interaction mode. The excitation of the oscillation mode is made possible by carefully adjusting the arrangements of each resonant cavity in a two-dimensional (2-D) slow wave structure. The high frequency characteristics are analyzed and a PIC simulation is carried out; the detailed results are discussed to get a better understanding of this new MILO. Employing an electron beam of about 441 kV and 39.7 kA, it finds that the modified HEM11 mode MILO generates a high power microwave output of about 1.47 GW at 1.45 GHz. The power conversion efficiency is about 8.4% and the generated microwave is in a TE11-like circularly polarized mode; its polarization direction is decided by the rotation direction of the SWS.

Key words: high power microwave, magnetically insulated transmission line oscillator, asymmetric mode, HEM_11 mode, circularly polarized mode

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

  • 84.40.Az
84.30.Ng (Oscillators, pulse generators, and function generators) 84.40.Fe (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))