Coplanar waveguides loaded with a split ring resonator-based microwave sensor for aqueous sucrose solutions

Abstract

In this study, a coplanar waveguide (CPW) loaded with a split ring resonator (SRR) based microwave sensor was developed for the detection of aqueous sucrose solutions. The fabrication and testing enabled the identification of the sucrose concentration. The CPW loaded with a SRR structure design was produced using electromagnetic models to improve its sensitivity by increasing the magnitude of transmission coefficient (S21). The resonance behavior, based on S21 characteristics of the microwave sensor, was analyzed in the range from 2–3 GHz with air and deionized water containing different sucrose concentrations in the range from 0–1 g ml−1. The experimental results showed that the proposed system has great potential to determine the sucrose concentration. It was shown that the proposed sensor has a high dynamic range and linearity for sucrose concentration sensing. The feature characteristic based on the CPW loaded with SRR sensing was excellent as defined by a T-circuit model as an inductor, capacitor, and resistor. It also provides an opportunity for the development of a low-cost sucrose meter system as an electronic tongue.

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Study of Two Constraints Impacting Measurements of Human Glycemia Using a Microwave Sensor

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