Pulse-Distortion Analysis for Millimeter-Wave Time-Domain Material Identification

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Analyzing the frequency dependent dielectric properties can be used to identify and distinguish materials in biomedical instruments. In the millimeter-wave range, the dielectric properties of biological tissues are mainly determined by their water content. For instance, it has been shown, that cancer cells have a lower water content than healthy skin cells, resulting in a significant dielectric contrast between them. In this work, we analyze the pulse distortion observed in measurements of the millimeter-wave reflection of water and porcine skin. We propose to use the distortion caused by the frequency dependent reflection coefficient at the interface of a material as a feature for identification. Using a simplified model for the reflection coefficient of the material under test, we simulate the distortion caused by the frequency dispersion. In simulation as well as in measurement, we observe different startup transients depending on the dispersion properties of a material under test. The startup behavior can therefore be used as feature, to directly identify dispersive materials in the time domain.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Materials Engineering

Keywords

  • Biomedical Measurement, Dielectric Characterization, Electromagnetic Reflection, Pulse Measurements, Time-domain analysis, Wavelet Generator
Original languageEnglish
Title of host publication2018 48th European Microwave Conference, EuMC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages572-575
Number of pages4
ISBN (Electronic)9782874870514
Publication statusPublished - 2018 Nov 20
Publication categoryResearch
Peer-reviewedYes
Event48th European Microwave Conference, EuMC 2018 - Madrid, Spain
Duration: 2018 Sep 252018 Sep 27

Conference

Conference48th European Microwave Conference, EuMC 2018
CountrySpain
CityMadrid
Period2018/09/252018/09/27

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