Abstract
Metamaterials and metasurfaces are two unique engineered materials which play a very important role in every field of research at almost every frequency range and band. Optical, microwave, terahertz metamaterials and metasurfaces now in demand due its special features and properties which can bend, absorb, propagate, and enhance, block the electromagnetic waves of any frequency. It has a special structure dimension which is related to wavelength of that wave which is passing through it. There are four types of metamaterials that have been defined according to permittivity and permeability values in different quadrants, as velocity is also different for these metamaterials and metasurfaces. In all applications area, design of antenna is the main issue on which researchers are working, and many types of antenna designs have been proposed and fabricated. For 5G, beyond 5G, and 6G applications, metamaterials are the best, chosen by designers apart from graphene, liquid crystal, and gold. In this chapter, the authors will cover all about metamaterials structures, properties and the main part is design of antenna for wireless applications.