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 in:IEEE microwave and wireless components letters 2022-05, Vol.32 (5), p.441-443
Main Authors: Karpisz, Tomasz, Salski, Bartlomiej, Kopyt, Pawel, Krupka, Jerzy, Wojciechowski, Marcin
Format: Article
Language:English
Subjects:
Anisotropic magnetoresistance
Anisotropy
Complex permittivity
Dielectric loss
Dielectric loss measurement
dielectrics
Fabry–Perot open resonator (FPOR)
Foils
Frequency measurement
Frequency ranges
Linear polarization
microwaves
Permittivity
Permittivity measurement
Resonant frequency
Resonators
Sapphire
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
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2022.3155938