Penetration of Electromagnetic Wave Through EMI Gasketed Seam

  • George M. Kunkel


The penetration of an electromagnetic wave through an EMI gasketed seam is presented. The presentation uses the surface current density (generated by a wave impinged on the barrier) and the transfer impedance of the EMI gasketed seam to predict the value of the E and H fields at any distance from the seam. An example using a high intensity field (field strength of 3770 volts/meter) that penetrates a gasketed seam. The result is the value of the E and H fields which are impinged on a printed circuit card inside an electronic system.


Electromagnetic wave EM wave Current density Transfer impedance Wave generation E field shielding H field shielding Shielding theory Shielding practice Displacement current Seam penetration 


  1. 1.
    IEEE EMCS Education Committee, Experiments ManualGoogle Scholar
  2. 2.
    Kunkel G (2018) Testing of EMI gaskets. Evaluation Engineering, June 2018Google Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • George M. Kunkel
    • 1
  1. 1.Spira Manufacturing CorporationSan FernandoUSA

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