“…Generally, the EM sensor that operate at the strongest radio frequency response is non-destructive evaluation technology and it is widely used in various applications such as medical biosensor, damage detection for infrastructures, and so on [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. In [ 1 ], a fluidic glucose sensor operated at 2.4 GHz using dual complementary split ring resonators (CSRRs) with a switching circuit is proposed for non-invasive and continuous glucose concentration detection.…”