MEASUREMENT OF FIELD STRENGTH ON RESONATOR BOUNDARIES BY THE PERTURBATION OF RADIATION FIELD

Abstract

A new indirect method for measuring the absolute values of the field strength on the boundaries of microwave resonators is presented. This method is based on the perturbation of the radiation field, which can be induced by changing the surface impedance of the resonator's conducting boundaries. The method is simple as well as accurate for applications where the other indirect methods, based on the perturbation of the mode-field, fail or become laborious and inaccurate. The perturbation formulas used to calculate the tangential field are simple and were readily derived from the classical theory of propagation of electromagnetic waves in media of high (but finite) conductivity. The new method was used to determine the distribution of surface current on the boundaries of a klystron re-entrant resonator. Relevant experimental results are presented.

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Document Details

Document Type
Technical Report
Publication Date
Feb 08, 1962
Accession Number
AD0274066

Entities

People

  • Ibrahim Hefni

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accuracy
  • Bandwidth
  • Boundaries
  • Current Density
  • Electric Fields
  • Electrical Measurement
  • Electromagnetic Fields
  • Frequency
  • Magnetic Fields
  • Materials
  • Measurement
  • Phase Measurement
  • Radiation
  • Resonant Frequency
  • Resonators
  • Surface Properties
  • Waves

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Electronics Engineering
  • Thermal Physics or Thermal Science.