A Novel Method to Depress Higher Order Mode Generation in MILO

Author

Qin, Fen ; Wang, Dong ; Wen, Jie ; Chen, Dai-Bing ; Fan, Zhi-Kai

Author_Institution

Inst. of Appl. Electron., China Acad. of Eng. Phys., Mianyang, China

Volume

39

Issue

1

fYear

2011

Firstpage

545

Lastpage

549

Abstract

Generating higher order mode microwave due to asymmetric beam emission or slightly asymmetric structure in MILO device is common, which puzzled a lot of researchers. A novel method to depress the higher order mode generation in MILO device is put forward for the first time. The excitation of the higher order modes was depressed by adjusting the slow wave structure, and a high power microwave in purified TEM mode was obtained. High frequency analysis and PIC simulation were carried out. The simulation results revealed that the novel MILO device oscillates at mode and successfully depressed the higher order mode generation. Employing an electron beam of 480 kV, 46 kA, and a TEM mode high power microwave with an output power of 734 MW, a frequency of 3.54 GHz was obtained in contrast with the original device with a mode output microwave frequency of 3.68 GHz.

Keywords

microwave generation; microwave oscillators; slow wave structures; MILO device; PIC simulation; TEM mode high power microwave; asymmetric beam emission; current 46 kA; frequency 3.54 GHz; frequency 3.68 GHz; high frequency analysis; higher order mode microwave generation; magnetically insulated line oscillator; mode output microwave frequency; power 734 MW; slow wave structure; voltage 480 kV; Blades; Cavity resonators; Microwave oscillators; Microwave technology; Physics; $hbox{HEM}_{11}$ mode; PIC simulation; high frequency analysis; high power microwave; higher order mode; magnetically insulated line oscillator (MILO); slow wave structure (SWS);

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2010.2089472

Filename

5665780