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A novel approach to non-invasive blood glucose sensing based on a single-slot defected ground structure

Published online by Cambridge University Press:  22 February 2022

Esraa Mansour Open the ORCID record for Esraa Mansour [Opens in a new window] ,
Ahmed Allam  and
Adel B. Abdel-Rahman
Esraa Mansour*
Affiliation:
Electronics and Communications Engineering Department, Egypt-Japan University of Science and Technology, Alexandria, Egypt Electronics and Communications Engineering Department, Zagazig University, Zagazig, Egypt
Ahmed Allam
Affiliation:
Electronics and Communications Engineering Department, Egypt-Japan University of Science and Technology, Alexandria, Egypt
Adel B. Abdel-Rahman
Affiliation:
Electronics and Communications Engineering Department, Egypt-Japan University of Science and Technology, Alexandria, Egypt
*
Author for correspondence: Esraa Mansour, E-mail: [email protected]
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Abstract

In this study, we explore a novel approach to measure blood glucose concentration in a non-invasive way using a compact defected ground structure (DGS) filter. The proposed sensor is promising because it is cost-effective, compact, non-ionizing in nature, and convenient for diabetics. Therefore, a portable microwave biosensor can be utilized using these features. In this study, we present a single DGS sensor which is designed on a Rogers RO4003C substrate and fed by a 50 Ω microstrip line, and operating in the industrial, scientific, and medical radio bands (2.4–2.5 GHz). The changes in dielectric properties in blood are mainly relying on glucose concentrations. The main concept of using a sensor is by placing a finger on the sensing area (the slot). The filter is demonstrated by simulations using CST Microwave Studio. Additionally, the blood layer with different glucose concentrations from 250 to 16 000 mg/dl is presented by the Cole–Cole model. The sensor can achieve a relatively good sensitivity of 7.8285 kHz/mg/dl. The size of the fabricated sensor is 40 × 40 × 0.883 mm3, which is suitable for hand-held use.

Keywords

Cole–Cole modeldefected ground-plane structure (DGS)dielectric propertiesglucometersnon-invasive blood glucose measurements sensors
Type
EuCAP 2021 Special Issue
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Special Issue 1: EuCAP 2021 Special Issue , February 2023 , pp. 32 - 40
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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