Comparative study of surface waves on high-impedance surfaces with and without vias

Comparative study of the surface waves on high-impedance surfaces has been presented. A simple analytical model for the HIS without vias is shown to predict accurately the surface-wave behavior. In the case of HIS structure with vias, it is shown that a simple model that treats the dielectric material with embedded vias as a uniaxial material is capable of predicting accurately the properties of forward and backward surface waves. The proposed analytical model can be effectively applied for the analysis of surface-wave behavior on different HIS structures.