Title :
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
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;
Conference_Titel :
Pulsed Power Conference (PPC), 2011 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4577-0629-5
DOI :
10.1109/PPC.2011.6191523
