Scattering from structures formed by resonant elements

Abstract

A two-dimensional (2-D) structure, formed by a finite number of resonant elements, has been considered in this paper, and its scattering characteristics have been analyzed in detail over a wide frequency band including the resonance region. The elements of the structure comprise perfectly conducting thin cylinders with longitudinal slots, it has been demonstrated that the scattered field of such an array exhibits rather remarkable properties at resonance frequencies. For instance, the strong coupling between the elements in the resonance region manifests itself into superdirective radiation in the far field and this is a common attribute of scatterers formed by coupled resonant elements.