Dielectric properties of natural materials

We report a novel method for the determination of the dispersive dielectric properties of natural materials exhibiting high dielectric losses over a wide frequency range. Our method is based on a comparison between measured and calculated scattering parameters of a section of coaxial transmission li...

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Main Authors: Oswald, B., Erni, D., Benedickter, H.R., Bachtold, W., Fluhler, H.
Format: Conference Proceeding
Language:English
Subjects:
Coaxial components
Dielectric losses
Dielectric materials
Dielectric measurements
Dispersion
Frequency
Ground penetrating radar
Parameter estimation
Scattering parameters
Transmission line measurements
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cited_by cdi_FETCH-LOGICAL-c218t-fe1e8237d8e64c0045a52cbfb3dc0ee8745bf02155cc3f7fadae6c49b5b4fb743
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container_end_page 2005 vol.4
container_issue
container_start_page 2002
container_title
container_volume 4
creator Oswald, B.
Erni, D.
Benedickter, H.R.
Bachtold, W.
Fluhler, H.
description We report a novel method for the determination of the dispersive dielectric properties of natural materials exhibiting high dielectric losses over a wide frequency range. Our method is based on a comparison between measured and calculated scattering parameters of a section of coaxial transmission line. We use a flexible, physically justified model for the behavior of the dielectric material whose parameters are estimated using a genetic algorithm (GA). Dielectric data is of great importance in a great number of applications like ground probing radar (GPR), time domain reflectrometry (TDR) for the determination of the volumetric water content and microwave based process tomography (/spl mu/PT), an emerging technology in process engineering applications.
doi_str_mv 10.1109/APS.1998.701600
format conference_proceeding
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identifier ISBN: 9780780344785
ispartof IEEE Antennas and Propagation Society International Symposium. 1998 Digest. Antennas: Gateways to the Global Network. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.98CH36, 1998, Vol.4, p.2002-2005 vol.4
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Coaxial components
Dielectric losses
Dielectric materials
Dielectric measurements
Dispersion
Frequency
Ground penetrating radar
Parameter estimation
Scattering parameters
Transmission line measurements
title Dielectric properties of natural materials
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