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Analytical method to estimate the complex permittivity of oil samples

 

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Opened Access Analytical method to estimate the complex permittivity of oil samples
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Author: Su, Lijuan
Mata Contreras, Javier
Vélez, Paris
Fernández Prieto, Armando
Martín, Ferrán
Department: Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo
Date: 2018
Published in: Sensors, 18 (4), 984.
Document type: Article
Abstract: In this paper, an analytical method to estimate the complex dielectric constant of liquids is presented. The method is based on the measurement of the transmission coefficient in an embedded microstrip line loaded with a complementary split ring resonator (CSRR), which is etched in the ground plane. From this response, the dielectric constant and loss tangent of the liquid under test (LUT) can be extracted, provided that the CSRR is surrounded by such LUT, and the liquid level extends beyond the region where the electromagnetic fields generated by the CSRR are present. For that purpose, a liquid container acting as a pool is added to the structure. The main advantage of this method, which is validated from the measurement of the complex dielectric constant of olive and castor oil, is that reference samples for calibration are not required.
Cite: Su, L., Mata Contreras, J., Vélez, P., Fernández Prieto, A. y Martín, F. (2018). Analytical method to estimate the complex permittivity of oil samples. Sensors, 18 (4), 984.
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URI: https://hdl.handle.net/11441/74933

DOI: 10.3390/s18040984

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