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Distributed parameters for low-frequency dielectric characterization of liquids with open-ended coaxial cell | IEEE Journals & Magazine | IEEE Xplore

Distributed parameters for low-frequency dielectric characterization of liquids with open-ended coaxial cell


Abstract:

The theory of distributed parameters is applied at low frequencies to the open-ended coaxial-line dielectric characterization technique. A procedure is proposed to determ...Show More

Abstract:

The theory of distributed parameters is applied at low frequencies to the open-ended coaxial-line dielectric characterization technique. A procedure is proposed to determine the permittivity of liquids when the sample is placed between two dielectric beads to ensure tight closure. The technique leads to a complex transcendental equation that the authors solve. An ad hoc sample holder is built to implement the proposed method. Measurements of both polar and nonpolar liquids demonstrate the adequacy of the method and its advantages with respect to the lumped-circuit theory in the case of polar samples.
Published in: IEEE Transactions on Instrumentation and Measurement ( Volume: 55, Issue: 1, February 2006)
Page(s): 176 - 179
Date of Publication: 30 January 2006

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I. Introduction

Precise measurements of permittivity in the frequency domain in several frequency ranges require the use of several different experimental setups [1]. In this case, it is desirable to use the same measuring cell in all of them so as to ensure identical sample composition. For this purpose, the sample holder is often an open-ended coaxial cell. Then the circuit theory (lumped circuits) is used at low frequencies, while distributed parameters are used for high frequencies [2]. In certain cases, the sample volume should not be too small to ensure reproducibility of measurements (this can prevent or minimize undesired effects such as the influence of impurities in the sample). In this case, if the circuit theory is applied and the sample is polar, then its electrical length could limit the frequency range below the highest one that the experimental setup would allow. These arguments led to the decision to design and build a coaxial measuring cell and work with distributed parameters on the basis explained in the following sections.

Cites in Papers - |

Cites in Papers - IEEE (7)

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1.
Wendi Zhu, Masoud Baghelani, Ashwin K. Iyer, "Dielectric Spectrum Extraction of Liquids Using Noncontact Microwave Split Ring Resonator", IEEE Transactions on Microwave Theory and Techniques, vol.72, no.10, pp.5859-5871, 2024.
2.
Zhenwei Zhang, Rui Jia, Jing Xu, Qiang Niu, Yuping Yang, Cunlin Zhang, Yuejin Zhao, "Quasi-Optical Measurement and Complex Refractive Index Extraction of Flat Plate Materials Using Single Time-Domain Transmission Model in Y-Band", IEEE Transactions on Microwave Theory and Techniques, vol.70, no.11, pp.5224-5233, 2022.
3.
Carlos G. Juan, Enrique Bronchalo, Benjamin Potelon, Cédric Quendo, Ernesto Ávila-Navarro, José María Sabater-Navarro, "Concentration Measurement of Microliter-Volume Water–Glucose Solutions Using Q Factor of Microwave Sensors", IEEE Transactions on Instrumentation and Measurement, vol.68, no.7, pp.2621-2634, 2019.
4.
Greg Hislop, Christophe Craeye, David González Ovejero, "Antenna Calibration for Near-Field Material Characterization", IEEE Transactions on Antennas and Propagation, vol.64, no.4, pp.1364-1372, 2016.
5.
Emanuele Piuzzi, Simone Chicarella, Andrea Cataldo, Egidio De Benedetto, Giuseppe Cannazza, "Design, Realization, and Experimental Characterization of an Admittance Cell for Low-Frequency Dielectric Permittivity Measurements on Liquids", IEEE Transactions on Instrumentation and Measurement, vol.65, no.1, pp.104-111, 2016.
6.
Pavel P. Bobrov, Andrey V. Repin, Olga V. Rodionova, "Wideband Frequency Domain Method of Soil Dielectric Property Measurements", IEEE Transactions on Geoscience and Remote Sensing, vol.53, no.5, pp.2366-2372, 2015.
7.
Greg Hislop, Christophe Craeye, "Permittivity measurement under free space propagation", 2012 6th European Conference on Antennas and Propagation (EUCAP), pp.3509-3512, 2012.

Cites in Papers - Other Publishers (1)

1.
Carlos G. Juan, "Glucose Concentration Detection in Aqueous Solutions with Microwave Sensors", Designing Microwave Sensors for Glucose Concentration Detection in Aqueous and Biological Solutions, pp.91, 2021.
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References

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