Modeling of three-dimensional electromagnetic band-gap structures

In this paper an accurate and efficient characterization of three-dimensional electromagnetic band-gap (3D-EBG) structures is performed, which exploits a full-wave theory developed for doubly periodic gratings. The basic theory is presented and the potentiality of the method in the analysis and design of EBGs is discussed. Convergence figures are reported and comparisons with theoretical data available in the literature are shown, with a very good agreement. Results are presented for EBGs with cubic inclusions, different polarization and incidence-angle cases are considered.