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Retro-Modelling Technique for Permittivity Measurements in the Range from 2.2 to 2.6 GHz for Medical Applications

In this study we present a permittivity measurement technique based on retro-modelling of a resonant cavity in the frequency range from 2.2 to 2.6 GHz that allows for a more arbitrary sample shape than traditional cavity perturbation techniques. It is shown that the resolution of the retro-modelling...

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Main Authors:	Salomon, C. J., Petrovic, N., Risman, P. O.
Format:	Conference Proceeding
Language:	English
Subjects:	ceramic dielectric measurement Measurement uncertainty Medical services Microwave measurement permittivity Permittivity measurement Perturbation methods Resonant frequency retro-modelling Shape
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creator	Salomon, C. J. Petrovic, N. Risman, P. O.
description	In this study we present a permittivity measurement technique based on retro-modelling of a resonant cavity in the frequency range from 2.2 to 2.6 GHz that allows for a more arbitrary sample shape than traditional cavity perturbation techniques. It is shown that the resolution of the retro-modelling technique can be improved if the invoked modes in the sample and in the surrounding cavity space are of different type or indexation, a condition that must clearly be avoided in classical perturbation techniques. The measurement method was applied to a ceramic sample of unknown permittivity which was retro-modelled to \varepsilon^{\prime}=19.35 and \sigma=0.009S/m with a remaining combined error of geometry and permittivity deviations between measurement and simulation of
doi_str_mv	10.1109/CAMA49227.2021.9703643
format	conference_proceeding
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J. ; Petrovic, N. ; Risman, P. O.</creator><creatorcontrib>Salomon, C. J. ; Petrovic, N. ; Risman, P. O.</creatorcontrib><description>In this study we present a permittivity measurement technique based on retro-modelling of a resonant cavity in the frequency range from 2.2 to 2.6 GHz that allows for a more arbitrary sample shape than traditional cavity perturbation techniques. It is shown that the resolution of the retro-modelling technique can be improved if the invoked modes in the sample and in the surrounding cavity space are of different type or indexation, a condition that must clearly be avoided in classical perturbation techniques. The measurement method was applied to a ceramic sample of unknown permittivity which was retro-modelled to \varepsilon^{\prime}=19.35 and \sigma=0.009S/m with a remaining combined error of geometry and permittivity deviations between measurement and simulation of <0.1 % in frequency and 22% in Q-value at the target resonance. 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This technique will allow us to identify suitable dielectric materials to improve the feed efficiency of our magnetic field applicator which is currently being developed for microwave breast cancer detection.</description><subject>ceramic</subject><subject>dielectric</subject><subject>measurement</subject><subject>Measurement uncertainty</subject><subject>Medical services</subject><subject>Microwave measurement</subject><subject>permittivity</subject><subject>Permittivity measurement</subject><subject>Perturbation methods</subject><subject>Resonant frequency</subject><subject>retro-modelling</subject><subject>Shape</subject><issn>2643-6795</issn><isbn>9781728196978</isbn><isbn>1728196973</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2021</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><recordid>eNotkN1KwzAcxaMgOGafQJC8QGs-2ia5LEU3YUUZ83qk6T9bpF9LM2E-vUV3dX4czjkXB6EnShJKiXoui6pIFWMiYYTRRAnC85TfoEgJSQWTVOUz3aIFm-04Fyq7R9E0fRFCOCM843SBTlsIfoiroYG2df0B78Ace3c6A7aDxx_gOxeC-3bhgivQ09lDB32YsOtxOALe6v4wR_3QYZYwHIZZcrxa__zVK2ic0S0uxrGdIbihnx7QndXtBNFVl-jz9WVXruPN--qtLDaxo1kmY2k41bUgJtONFqpmeW1rayW31uQkZVKmWosmo9LaFFJaW-BE1cY0SlPNDF-ix_9dBwD70btO-8v-ehL_BYt-XN0</recordid><startdate>20211115</startdate><enddate>20211115</enddate><creator>Salomon, C. 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recordid	cdi_ieee_primary_9703643
source	IEEE Xplore All Conference Series
subjects	ceramic dielectric measurement Measurement uncertainty Medical services Microwave measurement permittivity Permittivity measurement Perturbation methods Resonant frequency retro-modelling Shape
title	Retro-Modelling Technique for Permittivity Measurements in the Range from 2.2 to 2.6 GHz for Medical Applications
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