• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2023, Volume: 16, Issue: Special Issue 2, Pages: 15-21

Original Article

Low-Cost CSRR Sensor for Determination of Glucose Concentration

Received Date:23 March 2023, Accepted Date:26 June 2023, Published Date:02 November 2023


Objectives: In this work, we have proposed a Complementary Split Ring Resonator (CSRR) based microwave planar sensor for the determination of glucose concentration in aqueous solutions. Methods: A triple-ring microwave planar resonator sensor has been designed using the HFSS software to detect glucose concentration in aqueous samples. The sensor is designed to operate at 2.4 GHz of the Industrial Scientific and Medical (ISM) band and is used to extract the transmission coefficient when samples under test are placed over it. The sensor is simple in design and proposed to be made out of low-cost FR4 material. Findings: The sensor is found to deliver high sensitivity (0.125 MHz/mg/dL) and is capable of distinguishing minor changes in glucose concentration through the detection of changes in the resonant frequency of the sensor with the permittivity of the test solution. Also, it is found that by developing a fit equation from the values of transmission coefficient (S21), we can determine the dielectric constant of an unknown glucose sample, the accuracy of which is justified by its coefficient of determination, i.e., the R2 value. Novelty: A novel triple-ring Complementary Split Ring Resonator (CSRR) with high sensitivity is proposed which requires a very small volume (around 38 μ ), which is an advantage over a commercial probe.

Keywords: Complementary Split Ring Resonator, Microwave sensor, Permittivity, Glucose concentration, Transmission coefficient


  1. Juan CG, Bronchalo E, Potelon B, Quendo C, Avila-Navarro E, Sabater-Navarro JM. Concentration Measurement of Microliter-Volume Water–Glucose Solutions Using Q Factor of Microwave Sensors. IEEE Transactions on Instrumentation and Measurement. 2019;68(7):2621–2634. Available from: https://doi.org/10.1109/TIM.2018.2866743
  2. Govind G, Akhtar MJ. Metamaterial-Inspired Microwave Microfluidic Sensor for Glucose Monitoring in Aqueous Solutions. IEEE Sensors Journal. 2019;19(24):11900–11907. Available from: https://ieeexplore.ieee.org/document/8822476
  3. Buragohain A, Mostako ATT, Das GS. Low-Cost CSRR Based Sensor for Determination of Dielectric Constant of Liquid Samples. IEEE Sensors Journal. 2021;21(24):27450–27457. Available from: https://doi.org/10.1109/JSEN.2021.3124329
  4. Sun Z, Zhang H, Zhang S, Zhang N, Li K, Wang X. A Microwave CSRR Sensor for Non-Invasive Glucose-Level Detection. In: 2022 IEEE 5th International Conference on Electronic Information and Communication Technology (ICEICT). Hefei, China, 21-23 August 2022. IEEE. .
  5. Omer AE, Shaker G, Safavi-Naeini S, Kokabi H, Alquié G, Deshours F, et al. Low-cost portable microwave sensor for non-invasive monitoring of blood glucose level: novel design utilizing a four-cell CSRR hexagonal configuration. Scientific Reports. 2020;10(15200):1–20. Available from: https://doi.org/10.1038/s41598-020-72114-3
  6. Ebrahimi A, Scott J, Ghorbani K. Microwave reflective biosensor for glucose level detection in aqueous solutions. Sensors and Actuators A: Physical. 2020;301:111662. Available from: https://doi.org/10.1016/j.sna.2019.111662
  7. Govind G, Akhtar MJ. Metamaterial-Inspired Microwave Microfluidic Sensor for Glucose Monitoring in Aqueous Solutions. IEEE Sensors Journal. 2019;19(24):11900–11907. Available from: https://doi.org/10.1109/JSEN.2019.2938853
  8. Mohammadi P, Mohammadi A, Demir S, Kara A. Compact Size, and Highly Sensitive, Microwave Sensor for Non-Invasive Measurement of Blood Glucose Level. IEEE Sensors Journal. 2021;21(14):16033–16042. Available from: https://doi.org/10.1109/JSEN.2021.3075576
  9. Ebrahimi A, Scott J, Ghorbani K. Ultrahigh-Sensitivity Microwave Sensor for Microfluidic Complex Permittivity Measurement. IEEE Transactions on Microwave Theory and Techniques. 2019;67(10):4269–4277. Available from: https://doi.org/10.1109/TMTT.2019.2932737


© 2023 Das et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


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