An analytical model for permittivity measurement of liquid dielectrics with a tubular sample holder

In this work, an analytical model for permittivity measurements of liquid materials is presented. It uses a variant of the transmission line method with a tubular sample holder. The proposed formulation is simple, easy to deal with and allows straightforward conversion between the direct and the inv...

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Bibliographic Details
Published in:Microwave and optical technology letters 2021-02, Vol.63 (2), p.393-398
Main Authors: Rotava, André, Silva, Renato Abner Oliveira, Dias, Maurício Henrique Costa, Santos, José Carlos Araujo
Format: Article
Language:English
Subjects:
dielectric materials
liquid materials
Mathematical models
measurement techniques
Permittivity
Sample holders
Transmission lines
tubular sample holder
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Summary:In this work, an analytical model for permittivity measurements of liquid materials is presented. It uses a variant of the transmission line method with a tubular sample holder. The proposed formulation is simple, easy to deal with and allows straightforward conversion between the direct and the inverse solutions of the problem. Measurement results presented maximum relative errors of about 10% when compared to available data in the literature. It is shown to be suitable for measurements of materials over a wide range of relative permittivities.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.32606