Results 31 to 40 of about 114,262 (333)

Study of the Complex Permittivity of a Polyurethane Matrix Modified by Nanoparticles

IEEE Access, 2021
This study presents the influence of various types of nanoparticle (NP) fillers incorporated into a polyurethane (PU) (VUKOL 022) matrix and its subsequent changes in complex permittivity.
Jozef Kudelcik, Stefan Hardon, Peter Hockicko, Maria Kudelcikova, Jaroslav Hornak, Pavel Prosr, Pavel Trnka   +6 more
doaj   +1 more source

Complex Permittivity Measurement System for Solid Materials Using Complementary Frequency Selective Surfaces

IEEE Access, 2020
This paper describes a novel method of characterizing complex permittivity using a complementary frequency selective surface (CFSS). The CFSS provides a passband behavior and the change in the passband when a material under test (MUT) is placed adjacent ...
Chih-Kuo Lee, Shiyu Zhang, Syed Sheheryar Bukhari, Darren Cadman, J. C. Vardaxoglou, William G. Whittow   +5 more
doaj   +1 more source

Remote Sensing of Complex Permittivity and Penetration Depth of Soils Using P-Band SAR Polarimetry

Remote Sensing, 2022
A P-band SAR moisture estimation method is introduced for complex soil permittivity and penetration depth estimation using fully polarimetric P-band SAR signals.
Anke Fluhrer, Thomas Jagdhuber, Alireza Tabatabaeenejad, Hamed Alemohammad, Carsten Montzka, Peter Friedl, Ehsan Forootan, Harald Kunstmann   +7 more
doaj   +1 more source

A new approach to understanding the frequency response of mineral oil [PDF]

, 2014
Dielectric spectroscopy is non-invasive diagnostic method and can give information about dipole relaxation, electrical conduction and structure of molecules.
Chen, George, Hao, Miao, Jarman, Paul, Wilson, Gordon, Zhou, Yuan   +4 more
core   +1 more source

Precise measurement of complex permittivity of materials for telecommunications devices

Journal of Telecommunications and Information Technology, 2001
In order to obtain precise complex permittivity of the dielectric materials obtained from the perturbation method a correction curve is made using the electromagnetic field simulator which applies transmission line modeling (TLM) method.
Takayuki Nakamura, Yoshio Nikawa
doaj   +1 more source

Resonant effects in random dielectric structures [PDF]

, 2013
Recently, a theory for artificial magnetism in two-dimensional photonic crystals has been developed for large wavelength using homogenization techniques.
Bouchitte, Guy, Bourel, Christophe, Manca, Luigi   +2 more
core   +4 more sources

Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials

, 2011
We report the analysis of measurements of the complex magnetic permeability ($\mu_r$) and dielectric permittivity ($\epsilon_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions.
Dantas, Christine C., Gama, Adriana M., Rezende, Mirabel C.   +2 more
core   +1 more source

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

Sensors, 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, Qian Chen, Penghao Dong, Changjun Liu, Kama Huang   +4 more
doaj   +1 more source

Frequency-dependent substrate characterization via an iterative pole search algorithm [PDF]

, 2011
The characterization of frequency-dependent material properties is an important issue in nowadays high-speed interconnect design. This letter presents a practical method to determine the complex permittivity of a substrate material, by combining ...
Cauwe, Maarten, De Zutter, Daniël, Demeester, Thomas   +2 more
core   +1 more source

Measurement of Complex Permittivity in Free Space

Procedia Engineering, 2015
AbstractThe paper describes the measurement of complex permittivity in free space. It is an advanced non-contact method which is used to find the electromagnetic properties of materials. In this case it involves the materials which are used in aviation technology, especially for hardening the avionics against electromagnetic interference. A specialized
Skočík, Petr, Neumann, Petr
openaire   +2 more sources