Study and Suppression of Multipath Signals in a Non-Invasive Millimeter Wave Transmission Glucose Sensing System

Maria Koutsoupidou; Helena Cano-Garcia; Roberto L. Pricci; Shimul C. Saha; George Palikaras; Efthymios Kallos; Panagiotis Kosmas

doi:10.1109/JERM.2019.2938876

Study and Suppression of Multipath Signals in a Non-Invasive Millimeter Wave Transmission Glucose Sensing System

Maria Koutsoupidou, Helena Cano-Garcia, Roberto L. Pricci, Shimul C. Saha, George Palikaras, Efthymios Kallos, Panagiotis Kosmas

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Abstract

Electromagnetic (EM) biomedical sensors in the mm-wave frequency range must detect small changes in signals in the presence of tissues, which are correlated to a pathological condition. These signals, however, can suffer from artifacts due to complex EM wave interactions such as diffraction and surface wave propagation, which are often overlooked in the design phase of these sensors. This paper studies the impact of these wave phenomena on the signals transmitted and received from a pair of antennas designed to sense glucose changes via changes in transmission through a sample. Numerical simulations and controlled experiments with glucose solutions demonstrate for the first time that unwanted signal contributions from mm surface waves along the tissue can dominate the received signals but can be reduced with the use of appropriately placed absorbers around the antenna sensors. As a result, the sensitivity of such a sensing system to glucose changes is increased. This finding can be very useful in the design and development of the glucose sensor under study, as well as for other EM-based diagnostic medical applications.

Original language	English
Journal	IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology
DOIs	https://doi.org/10.1109/JERM.2019.2938876
Publication status	E-pub ahead of print - 2 Sept 2019

Keywords

chemical and biological sensors
electromagnetic modeling
electromagnetic propagation
millimeter wave measurements
surface waves

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Study and Suppression of_KOUTSOUPIDOU_firstonline2Sep2019_GREEN AAMAccepted author manuscript, 978 KB

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Koutsoupidou, M., Cano-Garcia, H., Pricci, R. L., Saha, S. C., Palikaras, G., Kallos, E., & Kosmas, P. (2019). Study and Suppression of Multipath Signals in a Non-Invasive Millimeter Wave Transmission Glucose Sensing System. IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology. Advance online publication. https://doi.org/10.1109/JERM.2019.2938876

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AU - Saha, Shimul C.

AU - Palikaras, George

AU - Kallos, Efthymios

AU - Kosmas, Panagiotis

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AB - Electromagnetic (EM) biomedical sensors in the mm-wave frequency range must detect small changes in signals in the presence of tissues, which are correlated to a pathological condition. These signals, however, can suffer from artifacts due to complex EM wave interactions such as diffraction and surface wave propagation, which are often overlooked in the design phase of these sensors. This paper studies the impact of these wave phenomena on the signals transmitted and received from a pair of antennas designed to sense glucose changes via changes in transmission through a sample. Numerical simulations and controlled experiments with glucose solutions demonstrate for the first time that unwanted signal contributions from mm surface waves along the tissue can dominate the received signals but can be reduced with the use of appropriately placed absorbers around the antenna sensors. As a result, the sensitivity of such a sensing system to glucose changes is increased. This finding can be very useful in the design and development of the glucose sensor under study, as well as for other EM-based diagnostic medical applications.

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Study and Suppression of Multipath Signals in a Non-Invasive Millimeter Wave Transmission Glucose Sensing System

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