A Terahertz Quadruple-resonant Metamaterial using Single-particle Asymmetrical-ELC resonators

摘要

The design and simulation of an asymmetrical coupling quadruple-resonant bilayer terahertz metamaterial based on Electric-inductance capacitance (ELC) resonators are presented in this paper. The simulation results show that the resonant frequencies are 0.173, 0.323, 0.481 and 0.622 THz, the first two of which are mainly caused by dipolar resonance and the other two are mainly caused by ELC resonance. Due to the asymmetrical electric field coupling mechanism, which is explained by the distributions of surface current, the resonant frequencies are designable by adjusting the corresponding geometrical parameters. Above all, the proposed structure can be applied in designing many multi-band terahertz devices.