Accuracy of a Multiprobe Conformal Sensor in Estimating the Dielectric Constant in Deep Biological Tissues

作者：Michel Andrea^*; Karathanasis Konstantinos; Nepa Paolo; Volakis John L

来源：IEEE Sensors Journal, 2015, 15(9): 5217-5221.

DOI：10.1109/JSEN.2015.2439032

• Biomedical sensor
• human health monitoring
• tissue dielectric properties
• wearable electronics

A theoretical analysis is presented on the accuracy of a novel method to extract the dielectric constant of deep tissues. The method exploits the variations of the electric fields on the surface of a multilayer dielectric scattering model and their dependence on dielectric properties of the deep tissues. The dielectric constant at a specific depth is expressed as a linear combination of the surface electric field samples. Critical parameters that affect the accuracy are determined through a numerical study, and basic guidelines for sensor design optimization are provided, using an emulation of a human torso. It is concluded that accuracies with errors <3% can be achieved, demonstrating the efficacy of the method and proposed representation.

• 出版日期2015-9