A NOVEL DUAL-LOOP COUPLER FOR ONE-PORT CYLINDRICAL CAVITY PERMITTIVITY MEASUREMENT

The one-port cavity resonator technique based on the [S.sub.11] parameter measurement for measuring the complex permittivity of dielectric samples has been proposed. A novel dual-loop coupler is developed for avoiding and suppressing the spurious modes in one-port cavity resonator. Through threading...

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Bibliographic Details
Published inElectromagnetic waves (Cambridge, Mass.) Vol. 127; pp. 537 - 552
Main Authors Zhang, H, Zeng, B.-Q, Ao, L, Zhang, Z
Format Journal Article
LanguageEnglish
Published Cambridge Electromagnetics Academy 01.01.2012
Subjects
Engineering design
Methods
China
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Summary:The one-port cavity resonator technique based on the [S.sub.11] parameter measurement for measuring the complex permittivity of dielectric samples has been proposed. A novel dual-loop coupler is developed for avoiding and suppressing the spurious modes in one-port cavity resonator. Through threading the pair of half loop in the opposite direction, the opposite surface currents can be generated and only [TE.sub.011] mode will be excited. The operating principles of the dual-loop coupler are investigated. This technique has the advantages of the coupling. Equivalent electronic circuit model has been set up. Simulation and experimental results show good agreement.
ISSN:1559-8985
1070-4698
1559-8985
DOI:10.2528/PIER12032613