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International Journal of Antennas and Propagation
Volume 2008, Article ID 129584, 12 pages
Research Article

Single and Multiple Scattering in UWB Bicone Arrays

1ENSTA, 32 Boulevard Victor, Paris Cedex 15 75739, France
2DEIS, Facoltà di Ingegneria, Via del Risorgimento 2, Bologna 40100, Italy

Received 1 May 2007; Revised 12 September 2007; Accepted 29 December 2007

Academic Editor: Dejan Filipovic

Copyright © 2008 Raffaele D'Errico and Alain Sibille. 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.


An analysis of interactions between radiators in a UWB biconical array, drawing attention to single and multiple scatterings, is carried out. The complementarity between electrical coupling and radiation scattering is argued. The point source approximation is discussed and shown to be insufficient. An approximation of radiation scattering based on angular averaging of the scattering coefficient is proposed. This approach yields a reduction of the problem complexity, which is especially interesting in UWB multiple antenna systems, because of the large bandwidth. Multiple scattering between radiators is shown to be a second-order effect. Finally, a time domain approach is used in order to investigate pulse distortion and quantify the exactness of the proposed scattering model.