Contribution à l’analyse des antennes microbandes avec excitation par la méthode du domaine spectral - Application à un réseau d’antennes microbandes

Abstract

The whole of this work is a characterization of the micro band antennas with and without excitation by the technique of the spectral domain. The solution of a single microstrip antenna is applied to an array of antennas. The analysis is based on an integral method using the spectral tensor of Green function and the method of moments. As a resolution tool, we used the Galerkin procedure, where we injected three specific basic functions for the shape of the isosceles, equilateral and rectangular patch. We have also demonstrated the effect of the uniaxiale anisotropy of the substrate on the resonance frequency and observed the effect of the position of the feed probe on the input impedance of the antenna. Finally, we were interested to plot the radiation patterns of the array of antennas with triangular patches taken in a circular arrangement and then in a rectilinear arrangement by varying the number of elements N of the network, the distance between elements d, the phase shift of the elements current δ and the steering angle θ0.