Electromagnetic Curtain Effect and Tunneling Properties of Multilayered Periodic Structures

This letter presents the scattering and tunneling properties of multilayered periodic arrangement composed of frequency selective surfaces (FSS). Each surface is composed of a linear array of cylindrical metallodielectric posts. This arrangement constitutes a two-dimensional (2-D) electromagnetic band gap (EBG) structure. The electromagnetic curtain effect, realized by a rotation of the scatterers in the structure under investigation, is discussed in this letter. The effect of complete wave tunneling, which was previously observed in a structure composed of a pair of epsilon-negative and mu-negative medium, and also in a pair of different FSS stacks characterized by dual behaviors, is also discussed here for the wave propagating through the proposed structure.