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Analysis of thin wire antennas using a hybrid fdtd-momtd approach

Analyse D’antennes Filaires au Moyen D’une MÉthode Hybride FDTD-MoMTD

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Abstract

In this paper, a technique allowing to model any orientation of a thin wire antenna in a fdtd mesh is presented. This approach is based on a hybridization between the fdtd (Finite Difference Time Domain) method and the momtd (Method of Moments in the Time Domain). A comparison between a near field-to-near field transformation and an interpolation method to transmit data from fdtd to momtd, is applied in the case of a helical antenna. The problem of a perfectly conducting materials crossing the interface between the two methods is analysed. Then the hybrid method has been applied to model the radiation of a bsa (Base Station Antenna) in front of a human body.

Résumé

Dans cet article, une technique permettant de modéliser une antenne filaire ďorientation quelconque dans un maillage fdtd est exposée. Cette approche utilise une hybridation entre la fdtd (Finite Difference Time Domain) et la momtd (Method of Moments in the Time Domain). Une comparaison entre une transformation champ proche-champ proche et une méthode ďinterpolation pour transmettre ľinformation de la fdtd vers la momtd, est appliquée dans le cas ďune antenne hélicoïdale. Le problème de matériaux parfaitement conducteurs traversant ľinterface entre la fdtd et la momtd est analysé. Puis la méthode hybride a été appliqué pour modéliser le rayonnement ďune BSA (Base Station Antenna) devant un corps humain.

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Authors and Affiliations

  1. France Telecom r&d dmr/iim, 38-40 rue du Général Leclerc, 92794, Issy Moulineaux cedex 9, France

    David Lautru & Joe Wiart

  2. Département de Recherche en Electromagnétisme, Supelec, Plateau de Moulon, 91192, Gif sur Yvette Cedex, France

    Walid Tabbara

Authors
  1. David Lautru
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  2. Joe Wiart
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  3. Walid Tabbara
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Lautru, D., Wiart, J. & Tabbara, W. Analysis of thin wire antennas using a hybrid fdtd-momtd approach. Ann. Télécommun. 56, 85–93 (2001). https://doi.org/10.1007/BF03002989

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  • DOI: https://doi.org/10.1007/BF03002989

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