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Abstract
We developed a metamaterial to estimate the refractive index in liquids by inserting cylindrical cells in the ground plane of a microstrip line, lines that form an electromagnetic bandgap (EBG) structure. We deposited inside the cells liquids with refractive indices estimated in the laboratory. The dispersion parameters S21 and S11 were evaluated by means of electromagnetic simulations with developed models and experimentally with manufactured prototypes. We analyzed the variation of center frequency, the bandwidth, and the level of losses by the variation of the refractive index of the material deposited inside the cells. Our results showed that it is possible to estimate the refractive index of materials by monitoring the resonance frequency or the level of insertion losses of the generated gap. The metamaterial developed is easy to build and its performance is adequate in the range of microwaves. © 2019. Acad. Colomb. Cienc. Ex. Fis. Nat.
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