Results 1 to 10 of about 19,749 (113)

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

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   +4 more sources

Broadband Measurements of Soil Complex Permittivity [PDF]

open access: yesSensors, 2023
Agriculture is a major consumer of freshwater and is often associated with low water productivity. To prevent drought, farmers tend to over-irrigate, putting a strain on the ever-depleting groundwater resources.
Justin Stellini   +7 more
doaj   +2 more sources

Complex Permittivity of Ex-Vivo Human, Bovine and Porcine Brain Tissues in the Microwave Frequency Range [PDF]

open access: yesDiagnostics, 2022
Accurate knowledge about the dielectric properties of biological tissues in the microwave frequency range may lead to advancement of biomedical applications based on microwave technology.
Anđela Matković   +3 more
doaj   +2 more sources

The Effect of Freezing and Thawing on Complex Permittivity of Bovine Tissues [PDF]

open access: yesSensors, 2022
The aim of this study was to investigate how the freezing and thawing of biological tissues affect their complex permittivity in the microwave frequency range from 0.5 MHz to 18 GHz.
Anđela Matković, Antonio Šarolić
doaj   +2 more sources

Integrating Complex Permittivity Measurements with Histological Analysis for Advanced Tissue Characterization [PDF]

open access: yesSensors
We developed a measurement setup and protocol reliably relating complex permittivity measurements with tissue characterization and specific histological features. We measured 148 fresh human tissue samples across 14 tissue types at 51 frequencies ranging
Sandra Lopez-Prades   +4 more
doaj   +2 more sources

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

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   +2 more sources

Complex permittivity of FeSiAl/Al2O3 ceramic composite at X-band frequencies [PDF]

open access: yesE3S Web of Conferences, 2021
The objective of this paper is to extract and study the complex permittivity of the FeSiAl/Al2O3 ceramic composite at X-band frequencies. We studied by simulation the complex permittivity of four composites with FeSiAl content varying from 0% to 15% by ...
Ouhassan Youssef   +2 more
doaj   +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

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

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

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