METAMATERIAL BASED NANO ANTENNAS

Abstract

In this report we shall see that metamaterial which are extremely useful for subwavelength operations because of their material structural dependent properties, improves the directivity of radiation produced by an antenna. This report also highlights the resonant behavior of a DPS slab when it is matched with a DNG, ENG or MNG media. Because of their zero refraction property the whole structure of materials exhibits same phase oscillations of the molecules at all point, in the presence of electric field. Here the oscillations refers to the oscillations of polarized molecules of material along with direction of electric field. To explain these oscillation the Lorentz models and its special cases has been covered to some brief extent, which are the equivalent models to damped harmonic oscillators. These models leads the frequency of resonance and later we will see how the structure made by the matched two slabs could be considered as L − C equivalent circuits which is the most generalized analogy for the study of metamaterials.