Novel approach in the study of Performance Comparison of Meta-Horn antenna

Abstract

Recently metamaterials or Double Negative Gain(DNG)Structure have been widely used due to its potential applications.DNG structures are mainly designed, fabricated with an array composed of Split Ring Resonators (SRR) and array of metallic Strip Wires (SW) to obtain the negative permittivity and permeability respectively. In this paper we report the detailed design, theoretical demonstration and testing for the DNGstructure,pyramidal horn antenna, in loaded (Meta-Horn) and unloaded case.The obtained result from the HFSS simulation concerning the constitutive parameters of the SRR, shows that there is a DNG permeability and permittivity in the frequency of interest.The horn antenna is loaded with fabricated DNG structure and various parameters have been measured at operating frequency of 8.5 GHz and 10 GHz.It was found that the results are improved at 8.5 GHz as compared to that of unloaded condition, while at 10 GHz DNG structure worked as normal material but the rate of performance of horn antenna decreases.