Investigation of propagation characteristics of a composite material composed of a bianisotropic metamaterial and an isotropic conventional material

It is well-known that metamaterials fabricated by an engineering design possess electromagnetic properties unavailable in conventional materials such as negative refractive index and perfect lens. Within the broad scope of metamaterials, bi-anisotropic metamaterials have properties different than isotropic metamaterials in that they have different forward and backward wave impedances, different forward and backward reflection scattering parameters, a wider stop-band compared to isotropic metamaterials, and a magneto-electric coupling coefficient. In the literature, wave propagation characteristics of different composite metamaterial media are investigated. To our best knowledge, wave propagation characteristics of a composite structure comprising of a bi-anisotropic metamaterial slab and an isotropic conventional slab has not yet been analyzed. In this thesis, propagation characteristics of the aforementioned structure is investigated. In the purpose of this thesis we analytically derived forward and backward reflection and transmission scattering parameters of the composite structure, for a uniform plane wave incident normally to the composite medium. Moreover, analytically derived parameters are validated by a numerical analysis. Finally, after derivation and validation of scattering parameters, we analyzed the wave characteristics of the composite structure fabricated by only split ring resonators using a commercially available electromagnetic/microwave simulation software package (CST Microwave Studio).