Antenna/structure interaction computation by using fast multipole techniques

The paper deals with a new approach to compute the interactions between an antenna and a surrounding structure. This method is divided into 2 steps: (1) the computation of the incident field from the antenna; (2) the computation of the scattered field. In the first step, the antenna is described by its radiation pattern (from measurement, for example) and its location point. We use a new method to perform a far field to near field transformation in order to compute the incident field on each point of the structure. In the second step, the current on the structure is computed by solving the electric field integral equation (EFIE) using a multilevel fast multipole method (FMM).