Triple-Poles Complementary Split Ring Resonator for Sensing Diabetics Glucose Levels at cm-Band

TL;DR

This paper introduces a novel triple-poles CSRR microwave sensor on FR4 substrate designed for non-invasive, real-time blood glucose monitoring in diabetics, leveraging enhanced sensitivity at harmonic resonances.

Contribution

The study presents a new triple-poles CSRR design that improves sensitivity over existing single and double-poles sensors for detecting glucose levels non-invasively.

Findings

Higher sensitivity at harmonic resonances compared to simpler resonator designs

Effective detection of dielectric property variations in glucose solutions

Simulation results demonstrate improved performance in the cm-band

Abstract

Microwave sensors are very promising for sensing the blood glucose levels non-invasively for their non-ionizing nature, miniaturized sizing, and low health risks for diabetics. All these features offer the possibility for realizing a portable non-invasive glucose sensor for monitoring glucose levels in real time. In this article, we propose a triple poles complementary split ring resonator (CSRR) produced on a FR4 substrate in microstrip technology in the cm-wave band (1-6 GHz). The proposed bio-sensor can detect the small variations in the dielectric properties (relative permittivity and dielectric losses) of glucose in the blood mimicking aqueous solutions due their intense interaction with the electromagnetic field at harmonic resonances. The resonator exhibits higher sensitivity performance at the different resonances compared to the single and double-poles counterparts as demonstrated by simulations in a 3D full-wave EM solver.