A Simulation Study on Triple-Square Complementary Split-Ring Resonator for Non-Invasive Blood and Aqueous Solutions Measurements

In the current study, we introduce an innovative triple square cell sensor, precisely angled at 45 degrees, mounted on a Roger RT/Duroid 3210 substrate for the non-invasive monitoring of glucose levels. Utilizing advanced computational simulations, including a 3D full-wave electromagnetic analysis facilitated by CST software, the sensor identifies minor changes in the dielectric properties of glucose solutions. The triple square cell design distinguishes itself with significantly heightened sensitivity, evidenced by three distinct resonant peaks, surpassing the single-cell design. Achieving a notable sensitivity measure of 0.38812 dB for each mg/dL change in glucose concentration, this sensor demonstrates promising capabilities for continuous, non-invasive glucose surveillance, which is an essential component in diabetes care.