Analysis and Design Methods of Metamaterials and Metasurfaces

Metamaterial, a material engineered to have a property that is not found in nature, is composed of periodic or non-periodic structure with subwavelength structural unit cell. With diversities of the unit cell topologies, the metamaterials exhibit various unique properties. In order to effectively analyse and design the metamaterials, four classes of analysis methods have been developed in this chapter. Firstly, the physics-based local resonant cavity cell (LRCC) model has been developed to study the electromagnetic band gap structure. Secondly, three effective medium theory based retrieval methods have been developed to extract the effective material parameters of the metamaterials. Thirdly, the equivalent circuit based model has been developed to characterize the metasurfaces. Finally, the full-wave simulation technique, called multilevel Green’s function interpolation method (MLGFIM), has been developed to analyse the periodic metamaterial array.