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Design of a Cylindrical Cavity Resonator for Measurements of Electrical Properties of Dielectric Materials
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Electronics, Mathematics and Natural Sciences.
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Abstract [en]

In microwave communications, the main aspects for affecting the dielectric losses in the materials are relating to the dielectric properties and the radiation frequencies. Normally, the different dielectric materials will lead to the different losses and reflections for microwave frequencies. To evaluate the dielectric properties from the different materials plays an essential role in the microwave engineering.

There are many approaches can be used to measure the dielectric materials, e.g. capacitor methods, transmission line methods, cavity resonator methods, open cavity methods and so on. The cavity resonator method is one of the most popular ways for measuring the dielectric materials. In this thesis, some of the techniques will be reviewed, and the TM010 mode cylindrical cavity resonator with perturbation technique will be used for determining the dielectric properties. The design and measurements will be presented in both simulations and practice. With 1.2GHz cavity resonator, in the simulations, the dielectric permittivity for Teflon is measured as 2.09-0.0023i and 2.12-0.0116 in copper cavity and ferromagnetic cavity. Finally the sample is measured as 3.83-0.12i in practice.

Place, publisher, year, edition, pages
2010. , p. 53
Keywords [en]
Dielectric constant measurement, Cavity resonator, Dielectric property, TM010 mode, Coupling device, Perturbation technique
Identifiers
URN: urn:nbn:se:hig:diva-7687Archive number: TEX 100126OAI: oai:DiVA.org:hig-7687DiVA, id: diva2:354559
Presentation
2010-09-23, 11:320, University of Gävle, 23:29 (English)
Uppsok
Technology
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Available from: 2010-10-08 Created: 2010-10-03 Last updated: 2010-10-08Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
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Language
  • sv-SE
  • en-GB
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  • Other locale
More languages
Output format
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