Publications

• Article dans une revue

In situ epitaxial surface passivation of GaAlN/GaN HEMT heterostructures grown by LP-MOCVD

Marie-Antoinette Di Forte-Poisson, Nicolas Sarazin, M. Magis, Maurice Tordjman, Erwan Morvan, Raphaël Aubry, J. Di Persio, Bertrand Grimbert

This paper reports on in situ passivation studies of GaAlN/GaN High electron mobility transistors (HEMT) structures grown by low-pressure metalorganic vapour phase epitaxy (LP-MOVPE) on sapphire and silicon carbide substrates. GaN, GaAlN, AlN and AlN/GaN superlattice (SL) layers have been deposited…

Journal of Crystal Growth, 2007, 298, pp.826-830. ⟨10.1016/j.jcrysgro.2006.10.193⟩. ⟨hal-00285680⟩

• Article dans une revue

Selective filtering of confined optical waves in a straight waveguide coupled to a lateral stub

Yan Pennec, Maxime Beaugeois, Bahram Djafari-Rouhani, Abdellatif Akjouj, Jerome O. Vasseur, L. Dobrzynski, Jean-Pierre Vilcot, Mohamed Bouazaoui, J.P. Vigneron

We report numerical simulations, based on a finite difference time domain (FDTD) method, of light propagation in two-dimensional semiconductor micro optical waveguides coupled to one or several lateral stubs. The incident wave which is of transverse magnetic polarization (TM) is either…

Journal of Optics A: Pure and Applied Optics, 2007, 9, pp.S431-S436. ⟨10.1088/1464-4258/9/9/S25⟩. ⟨hal-00285664⟩

• Article dans une revue

New flowmetric measurement methods of power dissipated by an ultrasonic generator in aqueus medium

Valérie Mancier, Didier Leclercq

Ultrasonics Sonochemistry, 2007, 14, pp.99-106. ⟨10.1016/j.ultsonch.2006.03.004⟩. ⟨hal-00255844⟩

• Article dans une revue

Application of the FDTD method to determine complex permittivity of dielectric materials at microwave frequencies using a rectangular waveguide

J. Terhzaz, H. Ammor, A. Assir, A. Mamouni

A new measurement technique is presented to determine the complex permittivity of a dielectric material. The dielectric sample is loaded in a short-circuited rectangular waveguide. The reflection coefficient of the waveguide is measured by Network analyzer and calculated as a function of the…

Microwave and Optical Technology Letters, 2007, 49, pp.1964-1968. ⟨10.1002/mop.22611⟩. ⟨hal-00255766⟩

• Article dans une revue

Ultrasonic guided waves on a periodical grating : coupled modes in the first Brillouin zone

B. Morvan, Anne-Christine Hladky, D. Leduc, J.L. Izbicki

The propagation of Lamb waves in a plate with an engraved periodic grating is addressed in this article. Mode conversions and reflections are analyzed. In the first part the conversion modes are explained by the existence of a resonance condition between the Lamb-wave wavenumbers and the…

Journal of Applied Physics, 2007, 101 (11), pp.114906. ⟨10.1063/1.2737348⟩. ⟨hal-00255741⟩

• Communication dans un congrès

EMI radiations emitted by power lines of PWM converters in airplane applications

J. Genoulaz, L. Kone, F. Costa, B. Demoulin, M. Dunand

Proceedings of 2007 EMC Europe Workshop, 2007, Paris, France. ⟨hal-00367735⟩

• Communication dans un congrès

Propagation in noisy multipath environment : extraction of paths characteristics

A. Nasr, M. Lienard, Pierre Degauque

Proceedings of 2007 EMC Europe Workshop, 2007, Paris, France. ⟨hal-00367733⟩

• Communication dans un congrès

Accuracy measurements of an original active loadpull based on large signal network analyzer

D. Ducatteau, M. Werquin, E. Delos, E. Morvan, D. Theron, Christophe Gaquière

Proceedings of the 2007 European Microwave Week, 2007, Munich, Germany. ⟨hal-00367699⟩

• Communication dans un congrès

EMI rayonnées par les câbles de puissance des convertisseurs à MLI pour des applications aéronautiques

J. Genoulaz, F. Costa, B. Demoulin, Christian Gautier, M. Dunand

Actes de l'Assemblée Générale du GDR ONDES : Interférences d'Ondes, 2007, Pessac, France. ⟨hal-00367740⟩

• Communication dans un congrès

Retrieval technique by field summation : application to double negative media

Charles Croënne, J.M. Lerat, M.N. Mallejac, O. Acher, D. Lippens

1st International Congress on Advanced Electromagnetic Materials for Microwaves and Optics, Metamaterials 2007, 2007, Roma, Italy. pp.706-709. ⟨hal-00804716⟩