A Non-Invasive Method of Monitoring Glucose in Blood Using a Planar Yagi-Uda Antenna and Microstrip Filter

Authors

  • Anveshkumar Nella School of Electrical and Electronics Engineering, VIT Bhopal University, India
  • Rabah Wasel Aldhaheri Department of Electrical and Computer Engineering, King Abdulaziz University, Saudi Arabia
  • Jagadeesh Babu Kamili Department of ECE, St. Ann’s College of Engineering and Technology, India
  • Nebras MohammedKamalA Sobahi Department of Electrical and Computer Engineering, King Abdulaziz University, Saudi Arabia

DOI:

https://doi.org/10.5755/j02.eie.31173

Keywords:

Blood, Glucose levels (mg/dL), Microwave sensor, Microstrip filter, Non-invasive method, Yagi-Uda antenna

Abstract

This work presents a non-invasive method to determine the glucose levels in blood samples using a planar Yagi-Uda antenna and a novel microstrip filter. The proposed antenna operates at 5.5 GHz and exhibiting uni-directional pattern giving a maximum gain of 6.74 dBi at the operating band. A commercially available and low-cost FR-4 substrate of dimensions 30 mm×40 mm×1.6 mm is used as a dielectric substrate. A finger phantom resembling a human finger is designed in the simulation environment, which consists of bone, skin, blood, fat as different layers. The glucose concentration is varied from 0 mg/dL to 500 mg/dL and the shifts in the frequencies are observed by keeping the phantom at various locations surrounding the antenna. A good frequency shift of 26 MHz is observed when the phantom is placed below the antenna. A good similarity is observed between the simulation and measurement results. Also, a novel microstrip filter, operating at 5.5 GHz, is developed, and the frequency shifts are studied by keeping a finger phantom at the top of the filter. The designed filter is shown to give a maximum frequency shift of 4 MHz when the glucose concentration changes from 250 mg/dL to 500 mg/dL. This study is supported by analysing transmission coefficient parameters and group delay characteristics.

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Published

2023-02-27

How to Cite

Nella, A., Aldhaheri, R. W., Kamili, J. B., & Sobahi, N. M. K. A. (2023). A Non-Invasive Method of Monitoring Glucose in Blood Using a Planar Yagi-Uda Antenna and Microstrip Filter. Elektronika Ir Elektrotechnika, 29(1), 33-39. https://doi.org/10.5755/j02.eie.31173

Issue

Section

HIGH FREQUENCY TECHNOLOGY, MICROWAVES

Funding data