Theoretical Design Study of a 2-18 GHz Bandwidth Helix TWT (Traveling Wave Tube) Amplifier

Abstract

This report investigates the concept of applying an extremely dispersive helix section prior to a nondispersive helix section in a traveling wave tube (TWT) output circuit in order to realize a 2-18 GHz frequency bandwidth. The nondispersive helix circuit provides the synchronism for multioctave performance, and the dispersive helix circuit yields the second harmonic relative phase shift necessary for harmonic suppression at the low frequency band edge. Fundamental efficiency enhancement and harmonic power content are shown to be a function of the circuit phase velocity characteristics, the injection velocity parameter, and circuit length. Also described is the effect of the Crestatron interaction phenomena on the TWT's performance. All the results are based on one-dimensional large signal computer calculations.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1987
Accession Number
ADA181108

Entities

People

  • Michael A. Frisoni

Organizations

  • University of Utah

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Bandwidth
  • Computational Science
  • Computer Programs
  • Computer Simulations
  • Computers
  • Dielectric Permittivity
  • Electrical Engineering
  • Engineering
  • Frequency
  • Frequency Bands
  • Phase Shift
  • Phase Velocity
  • Simulations
  • Traveling Wave Tubes
  • Traveling Waves
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Electronics Engineering