The Effects of Dielectric and Metal Loading on the Dispersion Characteristics for Contrawound Helix Circuits Used in High Power Traveling-Wave Tubes

Abstract

The dispersion characteristics for contrawood helix structures are examined to determine the effects of dielectric and metal loading. The theory developed by Chodorow and Chu is expanded to include the problem of a contrawood helix interposed between two dielectric regions, symmetrically oriented inside a conducting cylinder. Simultaneously analyzed is the single helix oriented in an identical fashion. Numerical results are presented in the form of dispersion diagrams over a wide range of parameters. Interesting behavior found within these diagrams is discussed and, whatever possible, compared to experimental results. Keywords: Helix tubes, Contrawound helix, Dielectric loading, Numerical analysis, Metal loading, Traveling wave tubes.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1988
Accession Number
ADA205345

Entities

People

  • William N. Cain

Organizations

  • University of Utah

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Amplitude
  • Bessel Functions
  • Boundaries
  • Boundary Value Problems
  • Current Density
  • Dielectric Permittivity
  • Differential Equations
  • Electric Fields
  • Electromagnetic Fields
  • Equations
  • Geometry
  • Magnetic Fields
  • Numerical Analysis
  • Theorems
  • Variational Methods
  • Wave Functions
  • Waves

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Microwave Engineering.
  • Phased Array Antenna Design.