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International Journal of Antennas and Propagation
Volume 2012, Article ID 106296, 8 pages
Research Article

EBG Size Reduction for Low Permittivity Substrates

1Radiation Group, Department of Signals, Systems and Radio Communications, University of Madrid, 28040 Madrid, Spain
2Department of Signal Theory, Telematics and Communications, University of Granda, Granda 18071, Spain

Received 3 September 2012; Accepted 13 December 2012

Academic Editor: Eric Lheurette

Copyright © 2012 Gonzalo Expósito-Domínguez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Double layer and edge-location via techniques are combined for electromagnetic band gap (EBG) size reduction. The study of the required number of elements and their dimensions is carried out in order to suppress the surface wave propagation modes and consequently to reduce the mutual coupling between radiating elements in low-permittivity substrates. By applying these techniques, the size of the EBG mushroom is reduced by 30%; however, the bandwidth operation maintains its value, and these structures can be integrated between radiating elements in broad bandwidth antennas.