Metamaterial cathodes in multi-cavity magnetrons

Author

Andreev, Andrey D. ; Hendricks, Kyle J.

Author_Institution

High-Power Microwave Div., Air Force Res. Lab., Kirtland AFB, NM, USA

fYear

2011

fDate

19-23 June 2011

Firstpage

833

Lastpage

838

Abstract

The paper presents results of computer experiments performed for research to enhance operational parameters of multi-cavity magnetrons through using the metal-thin-wire (MTW) and the metal-split-ring (MSR) metamaterial structures as a cold (non-thermionic) cathode. It is demonstrated by particle-in-cell (PIC) simulations of a generic 10-vane non-relativistic ultra-high frequency (UHF) magnetron that the output microwave power and the start-up time of this magnetron are improved by replacing either a solid or a transparent cathode by a bulk MTW metamaterial structure formed by an array of individual wires directed parallel to the axis of the magnetron (rodded cathode).

Keywords

cathodes; magnetrons; metamaterials; UHF magnetron; cold cathode; metal-split-ring metamaterial structures; metal-thin-wire metamaterial structures; metamaterial cathodes; multi-cavity magnetrons; non-thermionic cathode; particle-in-cell simulations; ultra-high frequency magnetron; Anodes; Cathodes; Cavity resonators; Magnetrons; Metamaterials; Solid modeling; Solids;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference (PPC), 2011 IEEE

Conference_Location

Chicago, IL

ISSN

2158-4915

Print_ISBN

978-1-4577-0629-5

Type

conf

DOI

10.1109/PPC.2011.6191523

Filename

6191523