A Novel Sample Holder for S11 Calibration Using SOM for Dielectric Measurement in Liquids via the Cut-off Waveguide Reflection Method

2021 ◽  
Author(s):  
Kouji Shibata
Keyword(s):  
Dielectric Measurement ◽  
Sample Holder ◽  
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%.

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

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. 

Dielectric Measurement for Barium Titanate Nanoparticles Using Far Infrared Reflection Method

2007 ◽  
Vol 350 ◽  
pp. 47-50 ◽  
Author(s):  
Takuya Hoshina ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
Satoshi Wada
Keyword(s):  
Dielectric Constant ◽  
Barium Titanate ◽  
High Dielectric Constant ◽  
Far Infrared ◽  
Dielectric Measurement ◽  
Reflection Method ◽  
Infrared Reflection ◽  
Barium Titanate Nanoparticles ◽  
High Dielectric ◽  
Batio3 Nanoparticles

Barium titanate (BaTiO3) nanoparticles with various particle sizes from 20 to 430 nm were prepared using a 2-step thermal decomposition method. Powder dielectric measurement clarified that dielectric constant of BaTiO3 particles with 140 nm exhibited a maximum around 5,000. To explain this high dielectric constant, THz-region dielectric properties of BaTiO3 nanoparticles, especially Slater transverse optic (TO) mode frequency, were estimated using the far infrared (FIR) reflection method. As the result, it was found that the Slater TO mode of BaTiO3 particles with 140 nm exhibited a minimum. Therefore, the high dielectric constant around 5,000 at 140 nm can be originated from the softening of the Slater TO mode.

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