QUEFFELEC Patrick

Professeur
Responsable du Pole MOM / Lab-STICC UMR 6285


Enseignant-chercheur
Etablissement : Université Bretagne Occidentale
Affectation de recherche : LABSTICC (Laboratoire des sciences techniques de l'information, de la communication et de la connaissance)

Equipe(s) : Pôle micro-ondes et matériaux
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Pour la messagerie : prénom.nom@univ-brest.fr
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Patrick Quéffélec received his PhD degree in Electronics from the Université de Bretagne Occidentale, Brest, France, in 1994 and his Habilitation à diriger des recherches [accreditation to supervise research] in 2002.
He is now a professor at the Laboratory of Sciences and Techniques of Information, Communication and Knowledge (Lab-STICC), a research unit associated with the Centre National de la Recherche Scientifique (UMR CNRS n°6285). In Lab-STICC, he is the Head of the Microwave, Optoelectronics, Material Research Department. His research activities concern electromagnetic wave propagation in heterogeneous and anisotropic media. He works on developing new approaches in materials and measurements for microwave ferrites and devices. Motivated by the applications of new magnetic materials in non-reciprocal or tuneable devices, in antennas, he is investigating the fundamental properties of magnetoelectric nanocomposites at microwave frequencies.
He has authored and co-authored over 120 refereed journal and conference papers, 3 patents and 2 book chapters. He gave 13 invited talks. He is a Senior Member of IEEE and a member of the Technical Committee Microwave Control Materials and Devices of the IEEE Microwave Theory and Techniques Society. He supervised 15 PhD, 4 post-doctoral research fellows and 18 Master research students graduated.

Research expertise:

 Physics based modelling of microwave phenomena in anisotropic magnetized media and functional devices,

 Microwave and mm-wave frequencies characterisation and measurements of functional electromagnetic materials (ferromagnetic and ferroelectric thin films, anisotropic ferrites, non-homogeneous materials: concrete, metamaterials, etc.) and non-destructive testing (NDT) sensors (cracks detection),

 Microwave magnetics and applications of gyrotropic media (ferrites, magnetodielectric composites) in nonreciprocal and unidirectional devices (circulators, isolators, phase shifters, etc.),

 Electromagnetic theory and specialised numerical-analytical methods for modelling and design of novel high frequency structures and devices,

 Multiferroic composite media with crossed electromagnetic properties, multiphysic and multiscale modelling, measurements.
 

List of 6 publications for a brief description of areas of expertise:

 P. Queffelec, V. Laur, A. Chevalier, J.-M. Le Floch, D. Passerieux, D. Cros, V. Madrangeas, A. Le Febvrier, S. Députier, M. Guilloux-Viry, G. Houzet, T. Lacrevaz, C. Bermond, and B. Fléchet, "Intercomparison of permittivity measurement techniques for ferroelectric thin layers", Journal of Applied Physics, vol. 115, Issue 2, Jan. 2014.
 S. Gomez, P. Queffelec, A. Chevalier, A.C. Tarot, and A. Sharaiha, “Asymmetrical stripline based method for retrieving the electromagnetic properties of metamaterials”, Journal of Applied Physics, vol. 113, issue 2, July 2013.
 A. Farhat, S. Le Maguer, P. Quéffélec, and M. Ney, “TLM Extension to Electromagnetic Field Analysis of Anisotropic and Dispersive Media: A Unified Field Equation”, IEEE Transactions on Microwave Theory and Techniques, vol. 60, n°8, pp. 2339-2351, Aug. 2012.
 F. Ferrero, A. Chevalier, J.M. Ribero, R. Staraj, J.L. Mattei, and P. Quéffélec, "A new magneto-dielectric material loaded tunable UHF antenna for handheld devices", IEEE Antennas and Wireless Propagation Letters, vol. 10, 2011.
 F. Rasoanoavy, V. Laur, S. De Blasi, J. Lezaca, P. Quéffélec, K. Garello, and B. Viala, “Magnetodielectic Effect in Tri-layered Co65Fe35B20/PVDF/Co65Fe35B20 Composite Materials. Prediction and Measurement for Tunable Microwave Applications”, Journal of Applied Physics, vol. 107, Issue 9, May 2010.
 J. Kerouedan, P. Quéffélec, P. Talbot, C. Quendo, S. De Blasi, A. Le Brun, “Detection of micro-cracks on metal surfaces using near-field microwave dual-behavior resonator filters”, Meas. Sci. Technol. 19 105701, Issue 10, October 2008.