Measurement of Uniaxially Anisotropic Dielectrics With a Fabry-Perot Open Resonator in the 20-50 GHz Range

Measurement results of uniaxially anisotropic materials performed with the aid of a plano-concave Fabry-Perot open resonator in the 20-50 GHz frequency range are presented and discussed in this letter. It is shown that a linear polarization of Gaussian modes applied in the characterization allows ex...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 32; no. 5; pp. 441 - 443
Main Authors Karpisz, Tomasz, Salski, Bartlomiej, Kopyt, Pawel, Krupka, Jerzy, Wojciechowski, Marcin
Format Journal Article
LanguageEnglish
Published IEEE 01.05.2022
Subjects
Anisotropic magnetoresistance
Anisotropy
Dielectric loss measurement
dielectrics
Fabry–Perot open resonator (FPOR)
Frequency measurement
microwaves
Permittivity
Permittivity measurement
Resonant frequency
Uncertainty
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Summary:Measurement results of uniaxially anisotropic materials performed with the aid of a plano-concave Fabry-Perot open resonator in the 20-50 GHz frequency range are presented and discussed in this letter. It is shown that a linear polarization of Gaussian modes applied in the characterization allows extracting in-plane complex permittivity of such materials as crystals and foils in a single measurement cycle. It is also shown that dielectric losses exhibit anisotropy, which can be quite significant, like in the sapphire, or relatively small, like in polymer foils.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2022.3155938