Results 251 to 260 of about 112,114 (290)

Complex Permittivity Models of Composite Dielectrics

2007 IEEE International Conference on Solid Dielectrics, 2007
This paper deals with analytical simulations of behaviour of loss frequency-dependent composite dielectric. Several equations of dielectric mixture theory were verified and the results were compared with measured values of these materials, which were prepared in good accord with the theoretical model. The studied dielectric spectroscopy frequency range
M. Kurtinec, R. Hamar, J. Pihera
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Microwave Complex Permittivity of Rain Water

AMPC Asia-Pacific Microwave Conference,, 2005
The complex permittivity of rain water is needed for modelling the microwave propagation in rain . It is measured by the infinite line impedance technique. Accurate results are obtained if an error correcting scattering matrix is used to remove system errors. The results seem to agree with those calculated for distilled water.
T.S. Yeo, V.N. Tran, P.S. Kooi, M.S. Leong   +3 more
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A modified calibration method for complex permittivity measurement

Review of Scientific Instruments, 2013
This work proposes a calibration method to determine the complex permittivity of materials based on the cavity-perturbation method. The method can characterize a sample with relative large in volume or high in dielectric constant, which significantly broadens the scope of the conventional perturbation method.
Hsein-Win, Chao, Tsun-Hsu, Chang
openaire   +2 more sources

Measurement of complex permittivity and complex permeability of materials

12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195), 2002
The time domain measurement of complex permittivity and complex permeability in the 8 to 18 GHz frequency band is considered. Some methods for determination of permittivity and permeability are presented.
H. Alenkowicz, B. Levitas
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Wideband Complex Permittivity Tester for 5G Materials

2018 48th European Microwave Conference (EuMC), 2018
Material characterization for 5G radio use is vital, because much lighter imperfections than previously can affect radio performance. One of the material types to be characterized are dielectrics. In this paper we propose a way to use absorbers to suppress unwanted test system resonances for circular disk test method of dielectrics.
Kauko Heinikoski, Lauri Hynynen, Timo Tarvainen   +2 more
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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 of Rubber-Carbon Mixtures

IEEE Transactions on Electrical Insulation, 1979
This communication describes the complex permittivity of various mixtures of synthetic rubber and carbon (acetylene black, furnace black and channel black) in the microwave region. The effects of temperature on the complex permittivities are also noted for different concentrations of carbon.
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Measurement of Complex Permittivity and Permeability

1970
Abstract : The program was conducted to derive a better technique for the measurement of the permeability and permittivity of lossy ferrites at microwave frequencies at temperatures up to 1000F. Although the classical method of waveguide measurement techniques was used, a careful analysis of the sources of errors was undertaken and a computer aided ...
Eva M. Thomas, Abdelnour S. Thomas
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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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The Complex Permittivity of Polyethylene/Mica Composites

IEEE Transactions on Electrical Insulation, 1982
The complex relative permittivity ?*(f) of polyethylene/mica composites has been measured in the frequency range 10-2 to 107 Hz, as a function of mica content ?2 and prior sample conditioning. ?*(f) was found to display two main features: ?'-?' ?and K'' vary as fn-1 with 0.64?n?0.83 for all ?2, on account of the intrinsic dispersive properties of the ...
L. Paquin, H. St-Onge, M. R. Wertheimer
openaire   +1 more source