Results 251 to 260 of about 6,016,080 (298)

Measurement of complex permittivity of liquids. II

Journal of Physics E: Scientific Instruments, 1974
Improvements on the method of Lovell and Cole (1959) for the measurement of complex permittivity of liquids by means of the Boonton R-X Meter are presented. A new approach to the calibration of the cell and connecting line, considering ohmic losses, is described.
N L Federigi, G H Barbenza
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Complex permittivity measurements of two conifers

IGARSS'97. 1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing - A Scientific Vision for Sustainable Development, 2002
Complex permittivity measurements in the frequency range 1-10 GHz of two conifers, a 5.0 m high Balsam fir and a 1.9 m high spruce, are presented. With the large amount of measurement data it is possible to establish representative average values for the various parts of the considered trees.
A. Franchois, R. Lang, Y. Pineiro
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Complex permittivity measurements of chicken blood

Microwave and Optical Technology Letters, 2003
AbstractThe basic dielectric properties of biological materials are required for the development of next‐generation microwave‐based medical instrumentation. The purpose of this paper is to further the study of the properties of blood using several different commonly used measurement methods.
E. Kratzenberg, M. N. Afsar, Y. Wang
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Measurement of complex permittivity of liquid dielectrics

Microwave and Optical Technology Letters, 2002
AbstractThe complex permittivity of a number of liquid dielectrics has been measured with the use of the in‐waveguide technique at the X and Ku band. The TRL calibration procedure is applied for the calibration of the waveguide system. The measured results of permittivity of distilled water agree well with those published in the literature.
Yong Wang, Mohammed N. Afsar
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Calibrated Broadband Measurement Technique for Complex Permittivity and Permeability

IEEE Transactions on Microwave Theory and Techniques, 2020
A technique to measure the complex permittivity and permeability using two different types of calibration is presented in this article. The technique is based on a classical transmission-line analysis, implemented on a strip-line structure. A new calibration technique, namely object-reflect-line (ORL), is proposed to meet the challenge of an extremely ...
M. I. Hossain, Nghia Nguyen-Trong, Abdulrahman S. M. Alqadami, Amin M. Abbosh   +3 more
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Waveguide Probes for Complex Permittivity Measurement

2008 14th Conference on Microwave Techniques, 2008
Paper deals with the complex permittivity measurement of biological tissues. Application of a waveguide probe for this measurement is shown. A non-destructive and non-invasive method based on reflection coefficient measurement attaching the material under test is used.
Radim Zajicek, Tomas Smejkal, Ladislav Oppl, Jan Vrba   +3 more
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Six-port Complex Permittivity Measurements

2006 European Microwave Conference, 2006
This paper describes a new method of measuring the complex relative permittivity epsiv* of high-loss and low-loss materials up to the L-band in the microwave range, based on the six-port technique. The novel feature of this method is the determination of epsiv* directly from the intersection of three circles in the complex epsiv*-plane.
A.L. de Souza Rolim, A.J. Belfort de Oliveira, M.T. de Melo   +2 more
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International Comparison of Complex Permittivity Measurement at 9 GHz

IEEE Transactions on Instrumentation and Measurement, 1974
Dielectric constant and loss measurements made by three government laboratories (of the USSR, Canada, and the U. S. A.) are compared. The two materials measured were glasses. The measurements utilized cavity resonators in the H01n mode. The errors in dielectric constant reported by the laboratories were usually ± 0.3 percent; actual differences between
Bussey, H. E., Morris, D., Zal'tsman, E. B.   +2 more
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Snow Microwave Complex Permittivity Measured with Resonator Sensors

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Microwave coaxial resonator sensors are used to retrieve snow complex dielectric permittivity ${\varepsilon _{\text{S}}} = \varepsilon _{\text{S}}^{\prime}{\text{i}} \cdot \varepsilon _{\text{S}}^{\prime\prime}$ from sensors frequency response. In addition to the conventional analytical approach, electromagnetic simulation software HFSS is used to ...
Naderpour, Reza, Schwank, Mike, Houtz, Derek   +2 more
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Measurement of complex permittivity of materials using a monopole antenna

IEEE Transactions on Geoscience and Remote Sensing, 1992
A method for measuring the complex permittivity of a material using a monopole antenna is presented. To test this technique, the complex permittivities of saline solutions in the frequency range 725-1300 MHz have been measured. The measured data are in good agreement with those obtained by other techniques. >
Y. D. He, L. C. Shen
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