Title :
Mitigation of electromagnetic field leakage from apertures and enclosures using electromagnetic bandgap (EBG) structures
Author :
Mohammed M. Bait-Suwailam;Omar M. Ramahi
Author_Institution :
Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave. W., ON N2 3G1, Canada
Abstract :
We present novel strategies to mitigate radiated emissions through apertures and enclosures using electromagnetic bandgap (EBG) structures. The proposed technique comprises loading EBG surfaces immediately around the apertures opening in order to suppress surface currents. Numerical full-wave simulations are presented to demonstrate the effectiveness of the EBG surface. In fact, by using EBG structures, more than 20-dB reduction in field leakage is achieved in the near-and far-field radiation without affecting the aperture size. The proposed technique is compared against unloaded aperture and other loaded apertures with lossy resistive sheets. A practical case study from real-world environment is discussed and the concept is validated using measurements.
Keywords :
"Apertures","Periodic structures","Metamaterials","Electromagnetic interference","Surface waves","Electromagnetic radiation"
Conference_Titel :
Electromagnetic Compatibility (EMC), 2011 IEEE International Symposium on
Print_ISBN :
978-1-4577-0812-1
Electronic_ISBN :
2158-1118
DOI :
10.1109/ISEMC.2011.6038281