Estimation of Permittivity of Materials using Sub-Millimeter Waves

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F17%3A63516802" target="_blank" >RIV/70883521:28140/17:63516802 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1109/CarpathianCC.2017.7970445" target="_blank" >http://dx.doi.org/10.1109/CarpathianCC.2017.7970445</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/CarpathianCC.2017.7970445" target="_blank" >10.1109/CarpathianCC.2017.7970445</a>

Result language

angličtina

Original language name

Estimation of Permittivity of Materials using Sub-Millimeter Waves

Original language description

Work presented in this abstract is aimed at reconstruction of relative electric permittivity. Recent real measurements gave rise to the progress of this research. Known dielectric materials as polytetrafluorethylen (Teflon), aluminium oxide, a generic black rubber, and their combinations were examined on higher range of frequencies to et some real data and to prove or to point out possible imperfections of the prepared inverse approach. A great novelty of this research is also in using submillimeter waves in measurements. The motivation of this work is in the further possibility to estimate the relative permittivity (with defined uncertainty) of unknown materials or new materials like nanomaterials and composites. Moreover this work plans to present results of experiments with combined parallel layers of materials. As far as the author knows to date it is known how to solve the explicit corresponding forward problems, that is, to compute the S-parameters (transmission and reflection coefficients) of a known material at a specific frequency range. The present study goes the nonconformist, opposite direction. The designed process of estimation can be abstracted to the following steps. At the beginning there is a need of transmission and reflection coefficients (measured S-parameters) of a material under test in free space. These are the input data. Afterwards, inverse processing takes place using a direct model which is computing synthetic S-parameters from guessed permittivity. A perfectly working direct model represents the base of success of this approach. An evolutionary algorithm is applied on this model the provide an automated way of estimating the permittivity. This leads to the best guess of the relative permittivity. This is the way how (not only) general material properties could be estimated from measured data.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LO1303" target="_blank" >LO1303: Promoting sustainability and development of the Centre for Security, Information and Advanced Technologies (CEBIA-Tech)</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

2017 18th International Carpathian Control Conference, ICCC 2017

ISBN

978-150904862-5

ISSN

—

e-ISSN

neuvedeno

Number of pages

5

Pages from-to

468-472

Publisher name

Institute of Electrical and Electronics Engineers Inc.

Place of publication

Piscataway, New Jersey

Event location

Sinaja

Event date

May 28, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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