Permittivity measurement of thermoplastic composites at elevated temperature [PDF]
, 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 permittivity determination from propagation constant measurements [PDF]
IEEE Microwave and Guided Wave Letters, 1999 The authors present a new transmission line method for measuring the complex permittivity of dielectric materials using propagation constant measurements. In contrast to previous methods, a network analyzer calibration is unnecessary since calibrated scattering parameters are not required.
M.D. Janezic, J.A. Jargon
openaire +1 more source
Broadband Measurement of Substrate Complex Permittivity Using Optimized ABCD Matrix
IEEE 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
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 +4 more
core +1 more source
Complex permittivity measurement of optoelectronic substrates
Electronics Letters, 1986 We propose and analyse new techniques to measure both transverse and longitudinal dielectric constants and the loss tangent of anisotropic dielectric samples usually used in integrated optics such as ...
D. Bourreau +2 more
openaire +1 more source
Monitoring insulator contamination level under dry condition with a microwave reflectometer [PDF]
, 2015 —Build-up of surface contamination on high voltage insulators can lead to an increase in leakage current and partial discharge, which may eventually develop into flashover. Conventional contamination level monitoring systems based on leakage current,
Jiang, Yan +5 more
core +1 more source
Complex Permittivity Measurement by Fano-resonance
Procedia Engineering, 2016 Abstract This paper presents a novel, Fano-resonance based complex permittivity measuring sensor. The Fano-resonance is produced by two nested, open-ended coaxial resonators. The resonance characteristic is an extremely narrow, asymmetric resonance curve. Loading the resonator with any substance, the resonance frequency, and the quality factor of the
Szalay, Z., Nagy, L.
openaire +1 more source
Scientific 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
Complex Permittivity Measurements at Variable Temperatures of Low Loss Dielectric Substrates Employing Split Post and Single Post Dielectric Resonators [PDF]
, 2004 A split post dielectric resonator in a copper enclosure and a single post dielectric resonator in a cavity with superconducting end-plates have been constructed and used for the complex permittivity measurements of single crystal substrates.
Jacob, Mohan V. +3 more
core +2 more sources
The Role of Probe Attenuation in the Time-Domain Reflectometry Characterization of Dielectrics [PDF]
, 2010 The influence of the measurement setup on the estimation of dielectric permittivity spectra from time-domain reflectometry (TDR) responses is investigated.
Ferraris, S. +2 more
core +1 more source