Title :
Contactless Microwave Technique Based on a Spread-Loss Model for Dielectric Materials Characterization
Author :
Haddadi, K. ; Wang, M.M. ; Benzaim, O. ; Glay, D. ; Lasri, Tuami
Author_Institution :
Inst. d´´Electron., CNRS, Villeneuve-d´´Ascq
Abstract :
A free-space method without any focusing mechanisms for determining the complex permittivity of dielectric materials is demonstrated. A model based on geometrical optics is developed for the propagation of a spherical electromagnetic wave through a material. The proposed method implemented using a four-port reflectometer associated to a pyramidal horn antenna is validated through an application related to the moisture measurement of a sample of cellular concrete.
Keywords :
dielectric materials; microwave materials; permittivity; cellular concrete; complex permittivity; contactless microwave; dielectric materials; free-space method; geometrical optics; pyramidal horn antenna; spherical electromagnetic wave propagation; spread-loss model; Calibration; complex permittivity; dielectric constant; free-space; loss tangent; reflectometer; spread-loss;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.2008573
