Results 11 to 20 of about 10,676 (263)

Complex Relative Permittivity Measurement Techniques [PDF]

open access: yesWarasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, 2019
This article presents a review of the techniques for measuring complex relative permittivity and also explains basic properties for understanding the principle of complex relative permittivity measurement. There are 6 measurement techniques mentioned in this article.
Nawarat Piladaeng
openaire   +1 more source

New Measurement Technique for Complex Permittivity in Millimeter-Wave Band Using Simple Rectangular Waveguide Adapters [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
This research presents a novel methodology for measuring the complex permittivity of a material under test (MUT) in a millimeter-wave (mmWave) band by using two rectangular waveguide adapters. Contrary to the conventional Nicolson-Ross-Weir (NRW) method,
Min-Seok Park   +4 more
doaj   +1 more source

Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

open access: yesSensors, 2021
A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz.
Jialu Ma   +5 more
doaj   +1 more source

Fire-induced changes in the dielectric constant of lichens in plateau palsas of the Nadym-Pur interfluve

open access: yesActa Biologica Sibirica, 2023
The paper analyzed the complex permittivity of lichens of the genus Cladonia sampled from areas disturbed by fire and from undisturbed plateau palsas in the Nadym-Pur interfluve, Western Siberia.
Tatiana D. Kochetkova   +5 more
doaj   +1 more source

Design of a Microwave Heating and Permittivity Measurement System Based on Oblique Aperture Ridge Waveguide

open access: yesSensors, 2023
In this paper, an oblique aperture ridge waveguide operating at 2450 MHz is proposed, and, using the ridge waveguide, a permittivity measurement system is constructed which can measure the permittivity of materials during microwave heating.
Mingyi Gou   +4 more
doaj   +1 more source

Application of Artificial Neural Networks for Accurate Determination of the Complex Permittivity of Biological Tissue

open access: yesSensors, 2020
Medical devices making use of radio frequency (RF) and microwave (MW) fields have been studied as alternatives to existing diagnostic and therapeutic modalities since they offer several advantages.
Julian Bonello   +4 more
doaj   +1 more source

A New Approach to Estimate the Complex Relative Permittivity of Materials Based on Free-Space Reflection Method

open access: yesAdvanced Electromagnetics, 2020
A microwave free-space reflection method for determining the complex permittivity of planar materials is demonstrated. Improved the MUltiple SIgnal Classification (MUSIC) algorithm to estimate the complex relative permittivity of material based on the ...
L. C. Nguyen, M. C. Ho, T.-H. Le
doaj   +1 more source

Electrical characteristics of pure and contaminated latex serum [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2018
This paper presents electrical characteristics of pure latex serum and latex serum contaminated with cassava and calcium carbonate (CaCo3). The pure serum sample was prepared by centrifuging field latex samples where the contaminated samples were ...
Huda Kosumphan   +2 more
doaj   +1 more source

An Open-Resonator Sensor for Measuring the Dielectric Properties of Antarctic Ice

open access: yesSensors, 2019
In this paper, the theory behind the design of a microwave sensor for the accurate measurement of firn complex permittivity is presented. This class of microwave sensors, based on the open-coaxial re-entrant cavity method, is specifically designed to ...
Roberto Olmi   +3 more
doaj   +1 more source

Microwave Complex Permittivity of Yttria-Stabilized Zirconia

open access: yesIEEE Open Journal of Instrumentation and Measurement, 2023
The complex permittivity of 8-mol yttria-stabilized zirconia (8-YSZ) in powder and sintered (i.e., solid) forms were measured from 32 to 40 GHz using a circular waveguide probe.
Anna Case, Aaron Barvincak, Reza Zoughi
doaj   +1 more source

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