DEVELOPMENT OF S-BAND LOW-NOISE PERIODIC PERMANENT MAGNET TRAVELING WAVE TUBE

Abstract

Various methods of focusing a low-noise electron beam are described. Experimental results for reversed-field, combined straight and periodic fields, and shielded straight-field focusing are presented. Effective means for shielding a straight-field magnet and eliminating its transverse components on the axis were found. Developments in the low-noise tube which facilitated permanent-magnet focusing are described. These include the pin-seal input match, and a considerable reduction in the gun bulb and coupler diameters. Operation of the amplifier is simplified by the inclusion of a voltage divider network to furnish the helix and anode voltages. Performance of the completed amplifiers with regard to gain, noise figure, and phase is discussed.

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Document Details

Document Type
Technical Report
Publication Date
Mar 19, 1963
Accession Number
AD0409032

Entities

People

  • B. P. Israelsen
  • F. T. Mauch
  • J. H. Foster
  • M. V. Purnell

Organizations

  • Watkins-Johnson Company

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accumulators
  • Air Force
  • Amplifiers
  • Assembly
  • Circuits
  • Contracts
  • Cyclotrons
  • Electron Beams
  • Frequency
  • Frequency Bands
  • Low Noise
  • Magnetic Fields
  • Magnetic Materials
  • Materials
  • Shielding
  • Traveling Wave Tubes
  • Traveling Waves

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Electronics Engineering

Technology Areas

  • Directed Energy
  • Microelectronics
  • Microelectronics - Microelectromechanical Systems