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Résumé Cet article décrit une méthode semi-analytique du calcul du champ électromagnétique rayonné par une antenne à réflecteur parabolique. Basée sur l’approximation de l’optique géométrique dans le domaine temporel, la méthode s’appuie sur les travaux de Skulkin et Turchin sur le rayonnement de réflecteurs plans. Elle tient compte de la polarisation de la source primaire ainsi que de sa défocalisation...
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