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A Zirconia Cylindrical TM010 Cavity for Permittivity Measurements at 1 GHz
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0002-2457-3079
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0002-2118-9354
2018 (engelsk)Inngår i: 2018 IEEE CAMA Conference on Antenna Measurement and Applications CAMA 2018, 2018Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The most accurate dielectric measurements are made by resonant cavity methods, the circular TM010 type being the simplest and most common. However, an airfilled such cavity at 1 GHz needs to be 250 mm in diameter. There is another problem as well: its limited applicability with very lossy samples, due to a too low Q value. This paper describes the development and properties of a metalized zirconia ceramic cavity for use at about 1 GHz. With its permittivity ε′ = 30 its diameter becomes 40 mm instead of 150 mm for the airfilled version. Additionally and importantly, the dynamic range of the loss factor ε″ is greatly expanded. The calibration procedure using numerical retromodelling is described and a measurement example of a ternary alcohol mixture is carried out. The accuracy is also estimated.

sted, utgiver, år, opplag, sider
2018.
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URN: urn:nbn:se:mdh:diva-41728DOI: 10.1109/CAMA.2018.8530482Scopus ID: 2-s2.0-85058314267ISBN: 978-1-5386-5795-9 (digital)OAI: oai:DiVA.org:mdh-41728DiVA, id: diva2:1272250
Konferanse
2018 IEEE CAMA Conference on Antenna Measurement and Applications CAMA 2018, 02 Sep 2018, Västerås, Sweden
Prosjekter
ESS-H - Embedded Sensor Systems for Health Research ProfileTilgjengelig fra: 2018-12-18 Laget: 2018-12-18 Sist oppdatert: 2018-12-20bibliografisk kontrollert

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