Dispersion Characteristics of a Helix Loaded Waveguide.

Abstract

The dispersion characteristics of a helix loaded waveguide have been experimentally investigated. Helix loaded waveguides are of interest as a slow wave structure that can be employed to increase the bandwidth of gyroton amplifiers. The structure consists of helical wires contained concentrially in a cylindrical conductor. The helical wires are close enough together to form a helical sheath justifying the assumption of azimuthal symmetry. The relevant physical parameters are the pitch angle (phi) and the ratio of the helix radius (Rh) to the conductor radius (Rc). The dispersion relations for the general azimuthal mode number are obtained for both the fast hybrid and the helix modes. Keywords include: Helix loaded waveguide, Resonant cavity, Dispersion curves, and Mode identification.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1985
Accession Number
ADA166444

Entities

People

  • A. Krall
  • H. Crosby
  • J. Choe

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Bandwidth
  • Cavity Resonators
  • Dispersion Relations
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Wave Propagation
  • Electron Beams
  • Electron Tubes
  • Frequency
  • Gyrotrons
  • Magnetic Fields
  • Microwave Tubes
  • Phase Velocity
  • Resonant Frequency
  • Spectrum Analyzers
  • Standing Waves
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Electronics Engineering
  • Plasma Physics / Magnetohydrodynamics