Characterization of an Inter-digitated Sensor for Non-invasive Blood-glucose Sensing

A microwave sensor with an inter-digitated structure is proposed to estimate non-invasive blood glucose sensing. The proposed sensor is designed, fabricated and measured for the required specifications. The transmission electromagnetic response is investigated to predict the blood-glucose level. Initially, the effectiveness of the fabricated sensor is demonstrated with the help of controlled experiments, performed in fetal-bovine serum sample solutions. A novel multi-parameter-based sensitivity factor is determined to estimate the blood glucose level. The proposed work showed that a multi-parameter approach may be effectively utilized to determine the blood-glucose level non-invasively.