The Impact of Metallic Scatterers on the Performance of a Class of Shielded Structures

In this communication an MPIE-MoM strategy is used to determine the scattering parameters of coupled structures within shielded structures or cavities. These S parameters are obtained in two domains. Firstly, these objects are analyzed in free space to discern their intrinsic frequency response. Thus, a free space Green function will be used in the MPIE. Subsequently, the scatterer is shielded with a cavity. This problem is broached by simply changing the free space Green function by a cavity Green function. Several studies are presented to determine the influence of the cavity on the free space response of the scatterer, especially in terms of matching, coupling and resonances. This study has a foreseen application range from EMC problems to accurate determination of cavity combline filter performance.