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.
Received: 13 January 2009
Revised: 24 February 2009
Accepted manuscript online:
Fund: Project supported by the Science
Foundation of the China Academy of Engineering Physics (Grant No
2008B0402046).
Cite this article:
Wang Dong(王冬), Chen Dai-Bing(陈代兵), Qin Fen(秦奋), and Fan Zhi-Kai(范植开) Magnetically insulated transmission line oscillator oscillated in a modified HEM11 mode 2009 Chin. Phys. B 18 4281
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