Propagation below Cutoff in Metallic Waveguide Loaded by Two Slabs with Modified Split Ring Resonator

This paper aims to study the synthesis of negative magnetic permeability and how this leads into some physical phenomena such as the appearance of backward waves and the propagation below cutoff. The extraction of the polarizability tensors of the edge coupled split ring resonator is derived, and the existence of bianisotropic effects of this case is investigated. It is shown how to avoid the bianisotropic effects through using a proposed design. Finally, the backward wave of the proposed design with lower losses than the edge coupled split ring resonator is shown by simulation.