Metamaterial Cathodes in Multi-Cavity Magnetrons

Abstract

The paper presents results of computer experiments performed for research to enhance operational parameters of multicavity 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).

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2011
Accession Number
ADA608498

Entities

People

  • Andrey D. Andreev
  • Kyle J. Hendricks

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Cavity Resonators
  • Charged Particles
  • Directed Energy Weapons
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Metamaterials
  • Electron Emission
  • Electrons
  • Frequency
  • High Power Microwaves
  • Metamaterials
  • Photoexcitation
  • Pulsed Power
  • Simulations
  • Tunable Metamaterials

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Electronics Engineering
  • Wetland-Land-Environmental Management.

Technology Areas

  • Microelectronics