Compact Elliptical Multi-Band Microstrip Sensor for Thumb-Tissue Glucose Sensing.
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| Title: | Compact Elliptical Multi-Band Microstrip Sensor for Thumb-Tissue Glucose Sensing. |
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| Authors: | Yousif, Amjad H.1, Luhaib, Saad W. O.1 s.w.o.luhaib@uomosul.edu.iq, Thanoun, Mohammed Y.2 |
| Source: | Progress in Electromagnetics Research C. 2026, Vol. 168, p75-81. 7p. |
| Subjects: | Blood sugar monitors, Microstrip resonators, Detectors, Microwave remote sensing, Imaging phantoms |
| Abstract: | This paper presents a new compact triple-band elliptical microstrip resonator for noninvasive microwave-based glucose sensing using a thumb-contact configuration. The proposed sensor employs concentric elliptical rings with a localized slot and capacitive coupling to enhance electric-field confinement in the sensing region. A multilayer cylindrical thumb phantom incorporating dispersive tissue models and glucose-dependent blood permittivity is utilized to emulate realistic on-body conditions. Full-wave simulations in the 2-6 GHz band demonstrate three dominant glucose-sensitive resonances with monotonic frequency shifts over a concentration range of 0-600 mg/dL. The frequency deviation rates are 0.147, 0.64, and 1.037 MHz/(mg/dL), respectively, with the highest linearity reaching R² ≈ 0.98. By distributing sensing across multiple resonant modes, the proposed approach enables frequency-diverse feature extraction suitable for multivariate regression, improving robustness against contact variability and tissue heterogeneity compared to single-band configurations. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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