CST – Computer Simulation Technology

Reduction of Electromagnetic Radiation from Apertures and Enclosures Using Electromagnetic Bandgap Structures

Title:
Reduction of Electromagnetic Radiation from Apertures and Enclosures Using Electromagnetic Bandgap Structures
Author(s):
Mohammed M. Bait-Suwailam, Babak Alavikia, Omar M. Ramahi
Source:
IEEE TRANSACTIONS ON COMPONENTS, PACKAGING AND MANUFACTURING TECHNOLOGY
Vol./Issue/Date:
VOL. 4, NO. 5, MAY 2014
Year:
2015
Page(s):
pp 929 - 937
Keywords:
Apertures, electromagnetic bandgap (EBG) structures, electromagnetic interference, field leakage, shielding, surface current
Abstract:
Comprehensive study on the source of electromagnetic radiation from apertures placed in conducting screens and enclosure is presented. Novel technique comprising placement of electromagnetic bandgap (EBG) structures immediately around the apertures openings is presented to suppress the surface currents and consequently to reduce the radiation from the apertures. The effectiveness of the proposed technique is demonstrated through several detailed parametric studies and numerical full-wave simulations quantifying the strength of electromagnetic fields in near and far regions from the aperture. In fact, using the EBG structures, more than 20-dB reduction is achieved in the near- and far-field radiation without affecting the aperture size. Finally, a detailed experimental case study from real-world environment is presented to validate the proposed concept.
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