Advanced Triangle Split Ring Resonator Designs for Enhanced Negative Refractive Index in GHz Frequency Range

Abstract

This work evaluates the characteristics of artificial metamaterials by designing 3D lattice vectors using CST (Computer Simulation Technology). Split ring resonators (SRRs) are modeled as series-resonant LC circuits, with total capacitance represented as a sum of gap capacitance and surface capacitance. These virtual SRRs are created using the dielectric constant of the substrate and the medium in the split- gap. A group of simulations were performed to obtain S-parameters, and the magnetic resonance frequencies of new SRR designs were analyzed. The study provides new constructs of SRRs: (tr-tr) SRR- equilateral concentric triangles, (tr-c) SRR– triangle with circular center and (tr-sq) SRR- triangle with square center. These SRR designs attempt to overcome some of the drawbacks experienced in the conventional SRS, such as scaling difficulties and low performance.