Dielectric Measurement in Liquids via the Cut-off Circular Waveguide Reflection Method After Sil Calibration Using SOM Termination

2020 ◽  
Author(s):  
Kouji Shibata
Keyword(s):  
Circular Waveguide ◽  
Dielectric Measurement ◽  
Reflection Method

scholarly journals Open-Ended Coaxial Cable Selection for Measurement of Liquid Dielectric Properties via the Reflection Method

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Jingchen Wang ◽  
Eng Gee Lim ◽  
Mark Paul Leach ◽  
Zhao Wang ◽  
Ka Lok Man
Keyword(s):  
Dielectric Properties ◽  
Reflection Coefficient ◽  
Relative Error ◽  
Measurement Accuracy ◽  
Liquid Dielectric ◽  
Coaxial Cable ◽  
Dielectric Measurement ◽  
Reflection Method ◽  
Careful Choice ◽  
Selection For

An open-ended coaxial cable is used to measure the dielectric properties of lossy liquid. The method which is based on the measurement of the reflection coefficient of the open-ended cable makes it easy to operate and postprocess. To meet the accuracy requirements, the dimensions of the coaxial cable need to be taken into consideration; therefore, it is necessary to select an appropriate coaxial cable for the measurement. This paper investigates the influence of cable dimensions on dielectric measurement accuracy. With careful choice of the coaxial cable, the relative error of calculated results can be less than 0.1%.

Dielectric Measurement Of Multi-Layered Medium Using An Open-Ended Waveguide

1996 ◽  
Vol 430 ◽  
Author(s):  
O. Tantot ◽  
M. Chatard-Moulin ◽  
P. Guillon
Keyword(s):  
Reflection Coefficient ◽  
Complex Permittivity ◽  
Layered Medium ◽  
Circular Waveguide ◽  
Air Gap ◽  
Dielectric Measurement ◽  
Microwave Measurement ◽  
Measurement Devices

AbstractThe use of a circular waveguide radiating into a multi-layered media allows the characterization of heterogeneous and fluid subtances. Many microwave measurement devices, based on reflection coefficient measurements, are subjected to air gap problems that introduce some inaccuracy in the determination of the unknown complex permittivity of the materials. Our purpose is to try and take the air gap into account in these measurements.

Demonstration of dielectric measurement using a probe-backside reflection method up to 300 GHz

2019 ◽  
Vol 58 (SL) ◽  
pp. SLLE02 ◽  
Author(s):  
Ryo Sakamaki ◽  
Masahiro Horibe ◽  
Manabu Yoshida ◽  
Takaaki Tsurumi
Keyword(s):  
Dielectric Measurement ◽  
Reflection Method

A coaxial-circular waveguide for dielectric measurement

1991 ◽  
Vol 29 (2) ◽  
pp. 321-330 ◽  
Author(s):  
M.R. Taherian ◽  
D.J. Yuen ◽  
T.M. Habashy ◽  
J.A. Kong
Keyword(s):  
Circular Waveguide ◽  
Dielectric Measurement

scholarly journals Evaluation of a Reflection Method on an Open-Ended Coaxial Line and its Use in Dielectric Measurements

10.14311/882 ◽  
2006 ◽  
Vol 46 (5) ◽  
Author(s):  
R. Zajíček ◽  
J. Vrba ◽  
K. Novotný
Keyword(s):  
Biological Tissue ◽  
Tissue Sample ◽  
Coaxial Line ◽  
Dielectric Measurement ◽  
Network Analyzer ◽  
Reflection Method ◽  
Frequency Range ◽  
Discrete Elements ◽  
Biological Substance ◽  
Coaxial Probe

This paper describes a method for determining the dielectric constant of a biological tissue. A suitable way to make a dielectric measurement that is nondestructive and noninvasive for the biological substance and broadband at the frequency range of the network analyzer is to use a reflection method on an open ended coaxial line. A coaxial probe in the frequency range of the network analyzer from 17 MHz to 2 GHz is under investigation and also a calibration technique and the behavior of discrete elements in an equivalent circuit of an open ended coaxial line. Information about the magnitude and phase of the reflection coefficient on the interface between a biological tissue sample and a measurement probe is modeled with the aid of an electromagnetic field simulator. The numerical modeling is compared with real measurements, and a comparison is presented. 

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