Results 21 to 30 of about 6,016,080 (298)

Broadband Measurement of Substrate Complex Permittivity Using Optimized ABCD Matrix

open access: yesIEEE Access, 2020
In this paper, a novel two-transmission-line method based on optimized ABCD matrix for broadband and continuous substrate dielectric characterization is presented.
Longzhu Cai, Zhi Hao Jiang, Wei Hong
doaj   +1 more source

An investigation of minerals using microwave measurement of complex permittivity [PDF]

open access: yes, 1990
Includes bibliography.Microwave measurement techniques have found many industrial and commercial applications. This measurement potential of microwaves, together with observations that different minerals show different microwave heating characteristics ...
Pendock, Graeme
core   +1 more source

Time-domain Reflectometry (TDR) technique for the estimation of soil permittivity [PDF]

open access: yes, 2011
Non
Ferraris, S.   +7 more
core   +1 more source

Temperature-dependent complex dielectric permittivity: a simple measurement strategy for liquid-phase samples

open access: yesScientific Reports, 2023
Microwaves (MWs) are an emerging technology for intensified and electrified chemical manufacturing. MW heating is intimately linked to a material’s dielectric permittivity.
Montgomery Baker-Fales   +3 more
doaj   +1 more source

Development of the epoxy composite complex permittivity and its application in wind turbine blades [PDF]

open access: yes, 2010
PhDOffshore wind farm structures may have the potential to affect marine navigation and communication systems by reflecting radar signals. With ever increasing size of wind turbines it is necessary to better understand the influence of radar signals on
Hu, Dawei
core   +1 more source

Design of high-performance millimeter wave and sub-millimeter wave quasi-optical isolators and circulators [PDF]

open access: yes, 2007
Faraday rotators using permanently magnetized ferrite materials are used to make quasi-optical isolators and circulators at millimeter wave and sub-millimeter wave frequencies that have far higher performance than their waveguide equivalents.
Goy, P   +7 more
core   +2 more sources

AN ADAPTIVE CAVITY SETUP FOR ACCURATE MEASUREMENTS OF COMPLEX DIELECTRIC PERMITTIVITY [PDF]

open access: yesProgress In Electromagnetics Research, 2010
In order to enhance the accuracy of the complex permittivity data employed in Ground Penetrating Radar (GPR) techniques, an adaptive cavity setup is presented. The use of moveable walls permits to relax the mechanical constraints on the sample dimensions so that it can be employed also in complicate measurement condition as, for example, in the case of
G Addamo   +5 more
openaire   +4 more sources

Broadband measurement of high permittivity at millimetre‐wave frequencies

open access: yesElectronics Letters, 2016
In this Letter, a method for the broadband measurement of complex permittivity using a quasi‐optical technique is presented. After calibration of the quasi‐optical system, the material under test is inserted into the system and S‐parameters are measured ...
Y.‐P. Hong, M.J. Salter, D.‐J. Lee
doaj   +1 more source

Precise measurement of complex permittivity of materials for telecommunications devices

open access: yesJournal 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

A New Planar Microwave Sensor for Building Materials Complex Permittivity Characterization

open access: yesSensors, 2020
A new microwave sensor is proposed to characterize the complex relative permittivity of building non-magnetic materials and used in the characterization of three concrete samples.
João G. D. Oliveira   +4 more
doaj   +1 more source

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