Results 31 to 40 of about 315,046 (231)

ONE-DIMENSIONAL INVERSE PROBLEMS OF ELECTROMAGNETIC PROBING STRATIFIED DIELECTRIC MEDIA [PDF]

open access: yesРадиофизика и электроника, 2015
The problem of permittivity profile reconstruction from reflection coefficient data for a stratified dielectric medium illuminated with a probing plane electromagnetic wave at a finite set of frequencies is considered to deal with a topical problem in ...
A. V. Brovenko   +4 more
doaj   +1 more source

Tree Roots Reconstruction Framework for Accurate Positioning in Heterogeneous Soil

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Ground-penetrating radar has recently found wide application in the underground imaging of tree roots. However, ignoring the random and complex nature of the heterogeneous soil and assuming the soil's relative permittivity constant throughout the ...
Wenhao Luo   +5 more
doaj   +1 more source

Permittivity measurement of thermoplastic composites at elevated temperature [PDF]

open access: yes, 2001
[Abstract]: The material properties of greatest importance in microwave processing of a dielectric are the complex relative permittivity Epsilon = Epsilon' - jEpsilon'', and the loss tangent, tan Delta = Epsilon'/Epsilon''.
Ball, James A. R.   +3 more
core   +1 more source

Complex permeability and permittivity variation of radar absorbing materials based on MnZn ferrite in microwave frequencies [PDF]

open access: yesMaterials Research, 2013
The complex dielectric permittivity (ε) and magnetic permeability (µ) of Radar Absorbing Materials (RAM) based on magnetic particles (MnZn ferrite particles) embedded in a dielectric matrix (silicon rubber) have been studied in the frequency ...
Adriana Medeiros Gama   +1 more
doaj   +3 more sources

Broadband Complex Permittivity and Electric Modulus Spectra for Dielectric Materials Research

open access: yesIEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, 2022
Measurement of the complex permittivity of a substance in a wide frequency range, for example, from 10 mHz to 100 kHz, provides useful information on the dielectric properties of the substance.
Y. Ohki
semanticscholar   +1 more source

Characterization of CVD graphene permittivity and conductivity in micro-/millimeter wave frequency range

open access: yesAIP Advances, 2016
The permittivity and conductivity of chemical vapor deposited monolayer graphene are investigated up to 40 GHz. The characterization method is based on a coplanar waveguide transmission line structure that is fabricated on a multilayer substrate of Si ...
Yunqiu Wu   +6 more
doaj   +1 more source

mm-Wave Complex Permittivity Extraction of LTCC Substrate Under the Influence of Surface Roughness

open access: yesIEEE Transactions on Instrumentation and Measurement, 2022
As many emerging technologies require the use of high-speed signals, the understanding of dielectric properties of materials used in manufacturing printed circuit boards (PCBs) is an essential aspect for accurate high-speed circuit designs, especially at
Ziad Hatab   +3 more
semanticscholar   +1 more source

Microwave dielectric properties of horticultural peat products [PDF]

open access: yesMires and Peat, 2007
The microwave dielectric properties of horticultural peat and compost peat were measured with a HP85107C network analyser in conjunction with a HP85070B open-ended coaxial dielectric probe for the frequency range 0.5–20 GHz.
G. Ayalew, N.M. Holden, S.M. Ward
doaj  

Polarization method for determination and visualization of complex permittivity in remote sensing issues

open access: yesНаучный вестник МГТУ ГА, 2019
When using remote radiophysical methods in problems of monitoring the environment, the central place belongs to solving problems of determining its electrophysical characteristics, i.e. dielectric permittivity e, conductivity c (complex permittivity ek).
L. Р. Ligthart   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy