In situ measurements of the complex permittivity of materials using reflection ellipsometry in the microwave band: theory (part I)

Florence Sagnard 1 F. Bentabet Christophe Vignat 2
1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 LIGM - Laboratoire d'Informatique Gaspard-Monge
Abstract : The aim of this series of two papers is to propose an original and low-cost tool dedicated to industrial applications and based on the reflection ellipsometry technique for in situ characterization of dielectric materials at microwave frequencies. In this first paper, different theoretical developments are presented that concern first a specific numerical method for calculating the complex permittivity of a single-layer sample from the measured parameters. Based on contour line charts, this method allows obtaining simultaneously the relative uncertainties on the real and imaginary parts of the complex permittivity. Secondly, for experimental comparisons with the classical Fresnel method, a numerical data processing method based on contour line charts has also been developed, which aims at the determination of the reflection coefficients in both parallel and perpendicular polarizations of the material.
Keywords : Complex permittivity Fresnel coefficients ellipsometry free-space methods material characterization microwave frequencies polarization reflexion
Type de document :
Article dans une revue
IEEE Transactions on Instrumentation and Measurement, Institute of Electrical and Electronics Engineers, 2005, 34 (3), pp.1266-1273. 〈10.1109/TIM.2005.847203〉
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Soumis le : vendredi 11 janvier 2013 - 14:14:18
Dernière modification le : vendredi 16 novembre 2018 - 01:23:31

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Florence Sagnard, F. Bentabet, Christophe Vignat. In situ measurements of the complex permittivity of materials using reflection ellipsometry in the microwave band: theory (part I). IEEE Transactions on Instrumentation and Measurement, Institute of Electrical and Electronics Engineers, 2005, 34 (3), pp.1266-1273. 〈10.1109/TIM.2005.847203〉. 〈hal-00772981〉

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