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Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on, Barcelona : Spain (2010)
Aperture antenna modelling by a finite number of elemental dipoles from truncated spherical field measurement: Experimental investigation
Mohammed Serhir 1, Jean-Michel Geffrin 2, Amelie Litman 2, Nicolas Ribière-Tharaud 3, Philippe Besnier 4
(08/08/2010)

A method to determine a distribution of a finite number of elementary dipoles that reproduce the radiation behaviour of the antenna under test (AUT) from truncated spherical field measurements is proposed. It is based on the substitution of the actual antenna by a finite number of equivalent infinitesimal dipoles (electric and magnetic), distributed over the antenna aperture. This equivalent set of elementary dipoles is optimized using the transmission coefficient involving the spherical wave expansion of the measured field and using an appropriate matching method. Once the current excitation of each dipole is known, the radiated field of the antenna at different distances can be rapidly determined. The reliability and the accuracy of the method are shown using experimental data issued from the measurement of an X-band horn antenna, in two different measurement setups.
1 :  SUPELEC-Campus Gif
SUPELEC
2 :  Institut FRESNEL (IF)
CNRS : UMR6133 – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III – Ecole Centrale de Marseille
3 :  Laboratoire des signaux et systèmes (L2S)
UMR8506 CNRS – SUPELEC – Université Paris XI - Paris Sud
4 :  Institut d'Electronique et de Télécommunications de Rennes (IETR)
CNRS : UMR6164 – Université de Rennes 1 – Institut National des Sciences Appliquées (INSA) - Rennes – SUPELEC
EMG - Département Electromagnétisme
DRE - Département de Recherche en Electromagnétisme
Systèmes Rayonnants Complexes (SRC)
Sciences de l'ingénieur/Electromagnétisme
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