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Techniques analytiques et numériques dans l’analyse des antennes microruban

Analytical and numerical techniques for the analysis of microstrip antennas

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Cet article considère les antennesplaques de forme quelconque en microruban et leur analyse théorique. Il décrit les principaux modèles simplifiés utilisés jusqu’à maintenant, puis présente une méthode mathématique rigoureuse, qui fait usage des fonctions dyadiques de Green pour milieux stratifiés. Les noyaux des intégrales obtenues possèdent des singularités et un comportement divergent. Un procédé de calcul original permet leur intégration. L’antenneplaque est ensuite découpée en rectangles, sur lesquels les courants de surface sont déterminés par une méthode de moments. L’impédance d’entrée est calculée, puis comparée à des valeurs expérimentales.

Abstract

This paper deals with microstrip patch antennas of arbitrary shape, and techniques available for their analysis. It reviews the various approximate models utilized so far, and presents a rigorous mathematical approach, based on dyadic Green’s functions for stratified media. Integrals are obtained with integrands possessing both singularities and a divergent behaviour at infinity: a numerical technique was set up for their integration. The antenna patch is cut up in rectangles, over which the surface currents are evaluated by a moment’s method. The antenna’s input impedance is computed and compared with measured values.

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  1. Laboratoire d’Electromagnétisme et d’Acoustique, Ecole polytechnique fédérale de Lausanne, chemin de Bellerive 16, CH-1007, Lausanne, Suisse

    Juan Ramon Mosig & Freddy Gardiol

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  1. Juan Ramon Mosig
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  2. Freddy Gardiol
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Mosig, J.R., Gardiol, F. Techniques analytiques et numériques dans l’analyse des antennes microruban. Ann. Télécommun. 40, 411–437 (1985). https://doi.org/10.1007/BF03003649

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