Experimental Verification of Double Negative Property of LHM with Significant Improvement in Microstrip Transceiver Parameters in S Band

摘要

In this work, a rectangular microstrip transceiver has been designed integrated with rectangular SRR based metamaterial structure at a height of 3.276 mm from the ground plane. Metamaterial has the ability to improve the parameters of antenna due to its focusing effect from its negative refractive index characteristics. Here design of rectangular split ring resonator based metamaterial structure is proposed, which has been superimposed on RMT at a height of 3.276 mm from its ground plane. This work is mainly focused on increasing the potential parameters of rectangular microstrip transceiver. The microstrip transceiver along with the proposed metamaterial structure is designed to resonate at 2.301 GHz. Simulation software is used to compare the bandwidth, return loss, directivity and efficiency of the rectangular microstrip transceiver at a frequency of 2.301 GHz with the proposed metamaterial structure. Simulation results showed that the impedance bandwidth of the RMT is improved by 487%, return loss is reduced by 117%, directivity is improved by 96% and efficiency is improved by 22% through the incorporation of the proposed metamaterial structure. In this work the values of permeability and permittivity of proposed innovative metamaterial structure are obtained by using a fictitious rectangular waveguide having perfect electric conductor and perfect magnetic conductor walls. For verifying that the proposed metamaterial structure possesses negative values of permeability and permittivity within the operating frequency range, Nicolson-Ross-Weir method (NRW) has been employed. For all simulation purpose, computer simulation technology-microwave studio (CST-MWS) Software has been used.