STUDY OF CROSSED-FIELD AMPLIFIERS

Abstract

An electron gun in which the cathode and accelerating regions are shielded from the magnetic field of the drift region is proposed. Beam synthesis techniques are utilized to obtain electrode configurations which produce a nearly laminar beam. Second order corrections to the beam synthesis method are found to be insignificant for the case of a large cathode width. Expression for the minimum noise-figure of crossed-field amplifiers is derived and its dependence on the space-charge parameter is shown. The parametric dependence of the noise-figure of crossed-field microwave amplifiers was established theoretically and experimentally. Conditions for the low-noise operation of crossed-field amplifiers were obtained. The dependence of space-charge smoothing factor as a function of cycloid length to cathode length is estimated from the theoretical study of the crossed-field potential minimum region. The study of certain crossed-field effects in solids was initiated.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1966
Accession Number
AD0482692

Entities

People

  • A. Sasaki
  • G. A. Poe
  • R. A. Rao
  • S. P. Yu
  • T. Van Duzer

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Acoustic Propagation
  • Amplifiers
  • Backward Wave Amplifiers
  • Charge Carriers
  • Coordinate Systems
  • Electrodes
  • Electronics
  • Low Noise
  • Low Noise Amplifiers
  • Magnetic Fields
  • Microwave Amplifiers
  • Noise
  • Shielding
  • Shot Noise
  • Space Charge
  • Traveling Wave Tubes

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Electronics Engineering
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster