DocumentCode
926014
Title
Helical Resonators for Measuring Dielectric Properties of Materials
Author
Meyer, W.
Volume
29
Issue
3
fYear
1981
fDate
3/1/1981 12:00:00 AM
Firstpage
240
Lastpage
247
Abstract
A theoretical and practical investigation is given of superconducting helical resonators with quality factors greater than 108 which allow the determination of dielectric loss tangents in the frequency range of 0.1 to 5 GHz and below 15 K with high accuracy. The underlying measurement theory is an extension of perturbation theory. They are evaluated for the fields in a shielded multiple quarter-wave helical resonator with a cylindrical dielectric specimen inside the helix. Measurement results on optimized resonators made from superconducting Nb and Nb3Sn are reported as well as further applications.
Keywords
Dielectric losses; Dielectric materials; Dielectric measurements; Magnetic field measurement; Propagation constant; Resonant frequency; Superconducting magnets; Superconducting materials; Superconducting microwave devices; Surface resistance;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.1981.1130334
Filename
1130334
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