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International Journal of Antennas and Propagation
Volume 2012, Article ID 746530, 8 pages
http://dx.doi.org/10.1155/2012/746530
Research Article

Wide Angular Aperture Circularly Polarized Low-Profile EBG Antenna

1XLIM-CNRS UMR 6172, Faculté des Sciences et Techniques, Université de Limoges, 87060 Limoges, France
2CISTEME, ESTER Technopole, 87069 Limoges, France
3Service Télécommunications et Navigation, Centre National d’Etudes Spatiales (CNES), 18 Avenue Edouard Belin, 31401 Toulouse Cedex 9, France

Received 9 February 2012; Accepted 8 May 2012

Academic Editor: Z. Chen

Copyright © 2012 Moustapha Salah Toubet 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.

Abstract

This paper describes the design of a compact and wide angular circularly polarized low-profile EBG antenna. Except at 3.7 GHz and for θ lower than −25° in the plane Φ equals to 0°, the modelized structure provides an axial ratio lower than 3 dB, over a wide angular aperture of 60° and over a bandwidth of 5.3% ([3.7 GHz–3.9 GHz]). It has a very low height of 11.9 mm ( 𝜆 /7 at 3.8 GHz). A prototype has been manufactured, and the measured performances, considering the tolerance of the measurement base (±0.5 dB), are quite similar to the simulated ones.