Development of a passive wireless sensor for fluidic detection and characterization utilizing the PCB-based coplanar electrode (PCE) configuration



  • Do Quang Loc (Corresponding Author) Faculty of Physics, VNU University of Science
  • Hoang Bao Anh Center for Electronics and Telecommunications Research, VNU University of Engineering and Technology



Fluidic detection; LC passive wireless sensing; Printed circuit board; Glucose biosensors.


During the global economic development, there's a growing focus on healthcare, especially in the advancement of medical diagnostic technologies, with a significant emphasis on glucose level evaluation. Glucose biosensors, predominantly electrochemical, have evolved over four generations, with the first three being enzyme-based and known for sensitivity and cost-effectiveness, albeit with limitations due to environmental susceptibility and reliance on enzyme activity. Recent advancements in non-invasive blood glucose monitoring, utilizing optical, microwave, and electrochemical techniques, offer diverse benefits without tissue penetration. Among these, impedance sensing stands out due to its flexibility and integration capability in handheld devices. This study proposes a wireless passive impedance method leveraging the inductor-capacitor (LC) sensing technique and PCB (Printed Circuit Board)-based coplanar electrode (PCE) configuration for fluidic sample detection. The proposed system integrates a two-coplanar-electrode layout with a square spiral inductor to assess fluidic conductivity and characterize various fluid types within samples. The effectiveness of this configuration was validated through experiments with NaCl and glucose solutions, confirming the feasibility of integrating PCB-based coplanar electrodes into conventional LC passive wireless sensing designs for fluidic detection and characterization.


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How to Cite

Do Quang, L., and Hoang Bao Anh. “Development of a Passive Wireless Sensor for Fluidic Detection and Characterization Utilizing the PCB-Based Coplanar Electrode (PCE) Configuration”. Journal of Military Science and Technology, vol. 96, no. 96, June 2024, pp. 116-23, doi:10.54939/1859-1043.j.mst.96.2024.116-123.



Research Articles