SOP TRANSACTIONS ON WIRELESS COMMUNICATIONS VOLUME 1, NUMBER 1, March 2014 SOP TRANSACTIONS ON WIRELESS COMMUNICATIONS Novel Approach in the Study of Performance Comparison of Meta-Horn Antenna Ritesh Kumar Kushwaha 1* , Sanjay Srivastava 2 , Yogesh Srivastava 3 1 Department of Electronics & Communication, Petal Group of Institution, Bhopal, (M.P), India 2,3 Department of Materials Science and Metallurgical Engineering, Maulana Azad National Institute of Technology, Bhopal (M.P.), India *Corresponding author: riteshkushwaha@gmail.com 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. Keywords: DNG, Metamaterial, Meta-Horn, SRR, VSWR, X-Band 1. Introduction The horn-reflector antenna was selected for the satellite for the communication satellite that relay television and radio signals, telephone calls and data around the world ground station of its broadband and low-noise properties along with certain operational advantages. Two commonly used microwave bands on satellites are C-band used for long-distance radio and telecommunications and Ku-band used for broadcast television and remote television uplinks. The pyramidal horn is widely used as a standard gain horn, as a feed for reflector and as an element in phase array antennas due to its such salient features as high gain, moderate bandwidth, construction simplicity, good power handling capability and low fabrication cost [1–4]. To make the pyramidal horn more compact, several approaches that include lens-correction [5–7] and dielectric loading [8, 9] have been considered. An important antenna design requirement is a wide impedance bandwidth. Horn antennas loaded with dielectrics or ferrite materials [10], have desirable properties such as increased directivity, reduced side lobe level, wide bandwidth, low loss, and ease of fabrication [11, 12]. 1