Contactless Microwave Technique Based on a Spread-Loss Model for Dielectric Materials Characterization

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 f...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2009-01, Vol.19 (1), p.33-35
Hauptverfasser:	Haddadi, K., Wang, M.M., Benzaim, O., Glay, D., Lasri, T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antennas Applied sciences Calibration Circuit properties Complex permittivity dielectric constant Dielectric materials Dielectrics Electric, optical and optoelectronic circuits Electromagnetic modeling Electromagnetic propagation Electromagnetic scattering Electromagnetic waves Electronics Exact sciences and technology Focusing free-space Geometrical optics loss tangent Mathematical models Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwave propagation Microwave theory and techniques Microwaves Optical propagation Permittivity Radiocommunications reflectometer Reflectometers Solid modeling spread-loss Telecommunications Telecommunications and information theory Wave propagation
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Beschreibung
Zusammenfassung:	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.
ISSN:	1531-1309 2771-957X 1558-1764 2771-9588
DOI:	10.1109/LMWC.2008.2008573