Optimal Application of Multilayer Shielding for Maximal EM Field Attenuation.

Abstract

A two-surface cable shield periodic bondings and with either discrete or distributed excitation is analyzed. It is found that the bondings improve the overall shielding effectiveness of the cable shield at certain frequencies, but degrade the shielding at others. Certain criteria are established for better shielding. In the case of distributed excitation, the overall effective transfer functions of a two-surface cable shield can be calculated from simple circuits. These circuits can be extended for multisurface cable shields. Part II extends the previous work on a single-surface shielded enclosure of arbitrary shape to a multisurface enclosure with or without electrical bonding between the shields. It is found that the inductive mutual interactions among the shields and the bonding straps reduce the effectiveness of a multisurface shielded enclosure against the penetration of external magnetic fields. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1982
Accession Number
ADA115187

Entities

People

  • F. C. Yang
  • K. S. H.. Lee

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Charge Density
  • Charge Transfer
  • Dispersion Relations
  • Electromagnetic Shielding
  • Engineering
  • Equivalent Circuits
  • Excitation
  • Frequency
  • Governments
  • Magnetic Fields
  • Shielding
  • Short Circuits
  • Transfer Functions
  • Transmission Lines
  • United States
  • United States Government

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Plasma Physics / Magnetohydrodynamics
  • Surface Coatings Technology.