Improving Glucose Sensor Sensitivity with Dual Resonator Placement

This study presents a novel design of a planar microwave sensor for non-invasive blood glucose monitoring. The sensor utilizes two circular-shaped complementary split ring resonators (CSRRs) fabricated on a Rogers substrate with an epsilon value of 6.15 to achieve a characteristic impedance of 50 ohms. The impact of varying placement distances between the CSRRs on the sensor's sensitivity to different blood glucose concentrations is investigated. Simulation results show that a placement distance of 15 mm between the CSRRs yields the highest sensitivity. These findings highlight the importance of optimizing the proximity of the resonators for enhanced sensor performance. The proposed sensor design offers a promising approach for accurate and non-invasive glucose monitoring, con-tributing to the development of advanced biosensing technologies for diabetes management.