High Resolution CSRR Loaded Microstrip Line Resonator for Dielectric Sensing Application

In this paper, a high resolution complementary split ring resonator (CSRR) loaded microstrip line resonator for dielectric sensing application is proposed. The resolution of the proposed sensor is improved by increasing the coupling area between the microstrip line and CSRR unit cell as compare to the conventional CSRR loaded microstrip sensor. The numerical simulations and optimization is performed using full wave electromagnetic solver CST. The resolution of the designed sensor is tested with various dielectric samples with close dielectric values. The proposed sensor can find potential applications in adulteration detection in edible oils and petrochemical products where the adulterant and parent liquid sample have close dielectric properties due to its high resolution characteristic.