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Open AccessArticle

Ultra-Wideband Temperature Dependent Dielectric Spectroscopy of Porcine Tissue and Blood in the Microwave Frequency Range

1
Biosignal Processing Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany
2
Department of Biomedical Technology, Faculty of Biomedical Engineering, CTU in Prague, 272 01 Kladno, Czech Republic
3
Department of Electromagnetic Field, Faculty of Electrical Engineering, CTU in Prague, 160 00 Prague, Czech Republic
4
Electronic Measurements and Signal Processing Group, Technische Universität Ilmenau, 98693 Ilmenau, Germany
5
ILMSENS GmbH, 98693 Ilmenau, Germany
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(7), 1707; https://doi.org/10.3390/s19071707
Received: 15 February 2019 / Revised: 22 March 2019 / Accepted: 4 April 2019 / Published: 10 April 2019
(This article belongs to the Special Issue Microwave Sensors for Biomedical Applications)
The knowledge of frequency and temperature dependent dielectric properties of tissue is essential to develop ultra-wideband diagnostic technologies, such as a non-invasive temperature monitoring system during hyperthermia treatment. To this end, we characterized the dielectric properties of animal liver, muscle, fat and blood in the microwave frequency range from 0.5 GHz to 7 GHz and in the temperature range between 30 °C and 50 °C. The measured data were modeled to a two-pole Cole-Cole model and a second-order polynomial was introduced to fit the Cole-Cole parameters as a function of temperature. The parametric model provides access to the dielectric properties of tissue at any frequency and temperature in the specified range. View Full-Text
Keywords: dielectric spectroscopy; temperature dependent dielectric properties of blood, fat, liver, muscle; M-sequence; ultra-wideband; open-ended coaxial probe dielectric spectroscopy; temperature dependent dielectric properties of blood, fat, liver, muscle; M-sequence; ultra-wideband; open-ended coaxial probe
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MDPI and ACS Style

Ley, S.; Schilling, S.; Fiser, O.; Vrba, J.; Sachs, J.; Helbig, M. Ultra-Wideband Temperature Dependent Dielectric Spectroscopy of Porcine Tissue and Blood in the Microwave Frequency Range. Sensors 2019, 19, 1707.

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