WIP STUDY OF MULTIPLE METALLIC OBSTACLE SCATTERING

The Wave Iterative Process is applied and validated for the study of the scattering of a plane wave by a multiple metallic dipole difiraction structure. The case of a single metallic dipole is treated, at flrst in normal incidence, than arbitrarily placed with respect to the incident wave. A double dipole scattering structure is studied, mutual in∞uence being taken into account. The difiraction system is further enlarged to 5 randomly placed dipoles, the results issued from the WIP study being compared with those given by the Moments Method. Finally, the possibility of taking into account a very large number of dipoles is examined, by introducing an equivalent dipole distribution. The in∞uence of this approximation on the WIP precision is presented.