at Google ScholarTitle data
Peter, Ronny ; Fischerauer, Gerhard:
Measurement of Axially Inhomogeneous Permittivity Distributions in Resonant Microwave Cavities.
In: IEEE Transactions on Microwave Theory and Techniques.
Vol. 67
(2019)
Issue 6
.
- pp. 2433-2442.
ISSN 0018-9480
DOI: https://doi.org/10.1109/TMTT.2019.2910177
Abstract in another language
The cavity perturbation method is a standard technique for material parameter estimation. It typically assumes that the sample consisting of the material under test (MUT) is small. This and other assumptions are violated in in-process measurement scenarios which involve big and inhomogeneous samples. We analyze the limitations of the classical perturbation method and present a new approach towards the measurement of spatially varying material parameters associated with a large sample in a rectangular or a circular cylindrical microwave cavity. The method is based on the measurement of multiple resonance frequencies and quality factors and is validated by numerical and laboratory experiments. It is demonstrated that relative permittivities and conductivities may be measured with typical accuracies on the order 1 %.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Keywords: | Cavity resonator; complex permittivity; inhomogeneous loading; inverse problem; perturbation method; Q-factor; resonance frequency |
| Institutions of the University: | Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 06 Jun 2019 06:24 |
| Last Modified: | 13 Sep 2022 12:45 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/48498 |