Scholarlink

<p>A complementary split ring resonator (CSRR)-based microstrip patch sensor is presented for noninvasive estimation of blood glucose concentration. The device employs a triangular patch with a CSRR etched in the ground plane to realize two ISM bands: 2.42–2.62&#xa0;GHz for wireless telemetry and 5.17–5.24&#xa0;GHz for sensing, where the structure operates as a microwave resonator. Geometry and feed parameters were optimized to sharpen the S-parameter response and improve glucose-dependent sensitivity. A multilayer human-thumb phantom was constructed, and blood glucose level was swept from 100 to 300&#xa0;mg/dL to quantify frequency-selective detection while complying with safety constraints. Changes in glucose level alter the tissue permittivity in the resonator-finger configuration, resulting in measurable shifts in resonant frequency and S<sub>11</sub> magnitude, which enables a dual-parameter readout. The prototype exhibits frequency sensitivity of 160&#xa0;kHz/mg·dL⁻<sup>1</sup> and magnitude sensitivity of 0.0654 dB/mg·dL⁻<sup>1</sup>. The sensor was fabricated using conventional PCB etching to validate the simulated design. The measured S-parameters closely follow simulations with minor deviations attributable to fabrication tolerances and tissue-model simplifications. Specific absorption rate (SAR) analysis yields 0.397&#xa0;W/kg averaged over 1&#xa0;g of tissue, within commonly accepted IEEE exposure limits. The compact, low-cost, dual-band architecture and dual-parameter sensing indicate strong potential for real-time, noninvasive glucose monitoring and future integration into wearable systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Development of dual-parametric complementary split ring resonator-based microstrip patch antenna sensor for non-invasive blood glucose monitoring

  • 期刊论文

  • 发表日期：

    2025年11月28日

查看全文
  • Md. Nahid Hasan Sifat,
  • Md. Jahirul Islam

摘要

A complementary split ring resonator (CSRR)-based microstrip patch sensor is presented for noninvasive estimation of blood glucose concentration. The device employs a triangular patch with a CSRR etched in the ground plane to realize two ISM bands: 2.42–2.62 GHz for wireless telemetry and 5.17–5.24 GHz for sensing, where the structure operates as a microwave resonator. Geometry and feed parameters were optimized to sharpen the S-parameter response and improve glucose-dependent sensitivity. A multilayer human-thumb phantom was constructed, and blood glucose level was swept from 100 to 300 mg/dL to quantify frequency-selective detection while complying with safety constraints. Changes in glucose level alter the tissue permittivity in the resonator-finger configuration, resulting in measurable shifts in resonant frequency and S11 magnitude, which enables a dual-parameter readout. The prototype exhibits frequency sensitivity of 160 kHz/mg·dL⁻1 and magnitude sensitivity of 0.0654 dB/mg·dL⁻1. The sensor was fabricated using conventional PCB etching to validate the simulated design. The measured S-parameters closely follow simulations with minor deviations attributable to fabrication tolerances and tissue-model simplifications. Specific absorption rate (SAR) analysis yields 0.397 W/kg averaged over 1 g of tissue, within commonly accepted IEEE exposure limits. The compact, low-cost, dual-band architecture and dual-parameter sensing indicate strong potential for real-time, noninvasive glucose monitoring and future integration into wearable systems.