A Theory of Electromagnetic Shielding with Applications to MIL-STD-285, IEEE-299, and EMP Simulation

Abstract

A shielding theory based on Impedance Boundary Conditions is developed and used to obtain formal expressions for the fields transmitted to the interior of a generalized metallic structure from an arbitrary, external, time harmonic, electromagnetic source. The structure is an assemblage of planar sheets that may be penetrated by a finite number of narrow rectangular slots. It includes both a single sheet (continuous or slotted) and a rectangular enclosure (continuous or slotted) as special cases. Explicit expressions are then derived for the transmitted electric and magnetic fields at points on the inside surfaces of plane sheets (continuous and slotted) and rectangular enclosures (continuous and slotted) when these structures are exposed to fields from elementary electric and magnetic dipoles and small rectangular loop antennas. These expressions are then used to obtain the shielding effectiveness of sheets and enclosures.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1985
Accession Number
ADA154905

Entities

People

  • R. L. Monroe

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Coordinate Systems
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Electromagnetic Shielding
  • Engineering
  • Frequency Domain
  • Gamma Rays
  • Geometry
  • Magnetic Fields
  • Magnets
  • Second World War
  • Test Methods
  • Three Dimensional
  • Transmission Lines
  • Two Dimensional
  • Waveforms

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering