Substrate Integrated Waveguide Sensor for Noninvasive Glucose Measurement

Abstract

This paper explores utilizing a substrate-integrated waveguide (SIW) sensor for noninvasive glucose measurement at 3.73 GHz. The design considerations and performance evaluation are presented specifically tailored for glucose measurement. The proposed SIW resonator was designed using two narrow slots on the top patch with an inset feed. The ground plane is etched with a split ring resonator to enhance the sensitivity. The suggested glucose resonant sensor is simulated for glucose levels ranging from 100 to 2000 mg/dL. The loading process is done in two categories: containers with varied glucose levels and finger layers. The frequency detection for this range of glucose-level fluctuations is 3.43 GHz. The suggested sensor has a sensitivity of approximately 0.42% for detecting glucose levels, which is higher than other relatives. The obtained results demonstrate the feasibility of the proposed SIW sensor as a promising candidate for noninvasive glucose monitoring.