Analogy of multi-band electromagnetically induced transparency metamaterial based on simple combination of split-ring resonators

Abstract

Abstract We investigate, simulate, and measure triple-band electromagnetically induced transparency-like metamaterial with different shapes and sizes of split-ring resonators. It exhibits three high transmissivities at 8.19 GHz, 8.65 GHz, and 9.19 GHz which can be fitted by the equivalent circuit model. Meanwhile, this has high values of group delay at three transparency peaks, exhibiting an excellent slow-light effect. On the other hand, this is applied to design the multi-band refractive index sensor, exhibiting a favorable sensing property. The physics mechanism of transparency peaks is analyzed by the electric field distributions.