Review of Metamaterials, Types and Design Approaches

Metamaterials are one of the most significant and interesting theme for the Electromagnetic Field Theory in the recent past. Many scientific efforts have been performed and analyzed in this field and concluding that the metamaterials have unique and incredible properties which can be used to increase the key performances of conventional devices. Basically metamaterials are considered in the category which show different behavior under the effect of electric and magnetic field than those materials which are naturally derived. The response of the metamaterials inspired devices at the high frequencies is much better than the devices with conventional materials. Use of metamaterials in various antenna designing and fabrication enhances the gain profile, efficiency and bandwidth requirements. In this paper, we will discuss about the brief history and types of metamaterials, its structure based various properties and approaches.