Quantitative determination of small ...
Document type :
Communication dans un congrès avec actes
Title :
Quantitative determination of small dielectric and loss tangent contrasts in liquids
Author(s) :
Bakli, Hind [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Haddadi, Kamel [Auteur]
Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Haddadi, Kamel [Auteur]

Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Conference title :
IEEE International Instrumentation and Meausurement Technology Conference, IEEE I2MTC 2017
City :
Torino
Country :
Italie
Start date of the conference :
2017-05-22
Journal title :
Proceedings of 2017 IEEE International Instrumentation and Meausurement Technology Conference, IEEE I2MTC 2017
Publication date :
2017
HAL domain(s) :
Sciences de l'ingénieur [physics]
French abstract :
Accurate measurement of dielectric constant and loss tangent in liquid media in the frequency range 2-6 GHz is proposed in this paper. The measurement set-up is based on an open-ended coaxial probe instrumented with a ...
Show more >Accurate measurement of dielectric constant and loss tangent in liquid media in the frequency range 2-6 GHz is proposed in this paper. The measurement set-up is based on an open-ended coaxial probe instrumented with a home-made microwave interferometer. The interferometer is used to match the impedance of the probe to the 50 ohms input impedance of the vector network analyzer to enhance the measurement sensitivity for detection of small contrasts of the material complex permittivity. An accurate modeling based on a calibration procedure is proposed to relate the measured microwave signal to the complex permittivity of the liquid under test. First, a modified one-port calibration model is developed to relate the microwave signal to the aperture-plane reflection coefficient. Secondly, both capacitive and quasi-static approaches are proposed to relate the complex permittivity of the liquid under test to the aperture-plane reflection coefficient. As a demonstration, the complex permittivities of different sodium chloride solutions are determined. Accuracies better than 0.4% at 2 GHz and 0.2% at 6 GHz are exemplary shown for both real and imaginary parts of the complex permittivity.Show less >
Show more >Accurate measurement of dielectric constant and loss tangent in liquid media in the frequency range 2-6 GHz is proposed in this paper. The measurement set-up is based on an open-ended coaxial probe instrumented with a home-made microwave interferometer. The interferometer is used to match the impedance of the probe to the 50 ohms input impedance of the vector network analyzer to enhance the measurement sensitivity for detection of small contrasts of the material complex permittivity. An accurate modeling based on a calibration procedure is proposed to relate the measured microwave signal to the complex permittivity of the liquid under test. First, a modified one-port calibration model is developed to relate the microwave signal to the aperture-plane reflection coefficient. Secondly, both capacitive and quasi-static approaches are proposed to relate the complex permittivity of the liquid under test to the aperture-plane reflection coefficient. As a demonstration, the complex permittivities of different sodium chloride solutions are determined. Accuracies better than 0.4% at 2 GHz and 0.2% at 6 GHz are exemplary shown for both real and imaginary parts of the complex permittivity.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
ANR Project :
Source :