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An EMI Estimate for Shielding-Enclosure Evaluation

  • Missouri University of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A relatively simple, closed-form expression has been developed to estimate the EMI from shielding enclosures due to coupling from interior sources through slots and apertures at the enclosure cavity modes. A power-balance method, Bethe's (1944) small-hole theory, and empirically developed formulas for the relation between radiation, and slot length and number of slots, were employed to estimate an upper bound on the radiated EMI from shielding enclosures. Comparisons between measurements and estimated field strengths suitably agree within engineering accuracy.

Original languageAmerican English
Pages (from-to)295-304
Number of pages10
JournalIEEE Transactions on Electromagnetic Compatibility
Volume43
Issue number3
DOIs
StatePublished - Aug 1 2001

Keywords

  • Bethe's Small-Hole Theory
  • EM Coupling
  • EM Diffraction
  • EMC
  • EMI Estimate
  • Apertures
  • Cavity Resonators
  • Cavity-Mode Resonances
  • Closed-Form Expression
  • Electromagnetic Coupling
  • Electromagnetic Interference
  • Electromagnetic Shielding
  • Electromagnetic Wave Diffraction
  • Enclosure Cavity Modes
  • Engineering Accuracy
  • Estimated Field Strengths
  • Interior Sources
  • Measurements
  • Power-Balance Method
  • Radiated EMI
  • Radiation
  • Shielding Enclosures
  • Slot Length
  • Slots
  • Upper Bound
  • Cavities
  • Diffraction
  • Electrical Equipment Enclosures
  • Shielding

Disciplines

  • Electrical and Computer Engineering

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