Results 21 to 30 of about 112,114 (290)

Effective complex permittivity tensor of a periodic array of cylinders [PDF]

, 2013
We determine the effective complex permittivity of a two-dimensional composite, consisting of an arbitrary doubly periodic array of identical circular cylinders in a homogeneous matrix, and whose dielectric properties are complex-valued.
Godin, Yuri A.
core   +1 more source

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

Advanced 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

Continuous Characterization of Permittivity over a Wide Bandwidth Using a Cavity Resonator [PDF]

Journal of Electromagnetic Engineering and Science, 2020
We examine a rectangular cavity resonator method to accurately characterize the complex permittivity of dielectric materials over a wide frequency range of 1–5 GHz by exploiting the fundamental mode and higher-order TE(1,0,l) modes.
Rehab S. Hassan, Sung Ik Park, Ashwini Kumar Arya, Sanghoek Kim   +3 more
doaj   +1 more source

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

Sensors, 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, Saverio Priori, Alberto Toccafondi, Federico Puggelli   +3 more
doaj   +1 more source

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

Simplified Complex Permittivity Measurement of Dielectric Materials Using a Compact Waveguide and a Machine Learning Technique [PDF]

Journal of Electromagnetic Engineering and Science
The Nicolson–Ross–Weir (NRW) algorithm is widely used to extract the complex permittivity of dielectric materials. Conventional NRW-based setups typically require machining dielectrics to fit waveguide apertures and to achieve precise adjustment across ...
Min-Seok Park, Jaehoon Cho, Soonyong Lee, Kyung-Young Jung   +3 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

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