Publications

• Article dans une revue

High linearity performance of gallium nitride HEMT devices on silicon substrate at 4 GHz

Nicolas Vellas, Christophe Gaquière, Yannick Guhel, Matthieu Werquin, Frédéric Bue-Erkmen, Sylvain Laurent Delage, B. Boudart, Fabrice Semond, Jean-Claude de Jaeger

In this letter, we demonstrate that, for high linearity application, GaN devices benefit from their high drain-source bias voltages. An improvement up to 20 dB in intermodulation ratio can be observed at high power levels compared to usual GaAs PHEMT devices. This study demonstrates that the high…

IEEE Electron Device Letters, 2002, 23 (8), pp.461-463. ⟨10.1109/LED.2002.801328⟩. ⟨hal-00149698⟩

• Communication dans un congrès

Inversion of V(z) responses for determination Cij elastic constants by using an optimization method on the singularities of the reflection coefficient

Youssef Benmehrez, Michael Lematre, G. Bourse, Wei-Jiang Xu, Mohamed Ourak

The measurement of the V(z) curve, also called acoustical material signature has been used to determine cij elastic constants. The method is based on the comparison of measured and calculated R(θ,f) reflection coefficient. The measured R(θ,f) is determined by inversion of the V(z) curve. The cij…

QUANTITATIVE NONDESTRUCTIVE EVALUATION, Jul 2001, Brunswick, United States. pp.1353-1360, ⟨10.1063/1.1472952⟩. ⟨hal-00149914⟩

• Communication dans un congrès

Inspection de billes par spectroscopie de résonance des ondes ultrasonores de surface

S. Petit, J. Gualandri, H. Carrerot, C. Bruneel

2002, pp.360-363. ⟨hal-00149922⟩

• Article dans une revue

Détection d'obstacles devant les véhicules de transports guidés. Utilisation d'un radar coopératif et d'un stéréoscope optique

L. Khoudour, S. Ambellouis, C. Vieren, P. Deloof

Instrumentation, Mesure, Métrologie, 2002, 2, pp.81-116. ⟨hal-00149879⟩

• Communication dans un congrès

Analyse physique des HEMTs à base de nitrure de gallium

M. Elkhou, Michel Rousseau, Jean-Claude de Jaeger

GDR Semiconducteurs à large bande interdite, 2002, Montpellier, France. ⟨hal-00149718⟩

• Autre publication scientifique

Couches minces ferroélectriques pour applications opto-microélectroniques

El Hadj Dogheche

2002. ⟨hal-00149625⟩

• Communication dans un congrès

Plastic relaxation mechanisms in systems with a twist-bonded layer

C. Priester, G. Grenet

2002, pp.I13.4. ⟨hal-00149952⟩

• Article dans une revue

Monte Carlo simulation of electron transport in narrow gap heterostructures

Jean-Luc Thobel, Olivier Bonno, François Dessenne, Hervé Boutry

A Monte Carlo method is proposed for the study of in-plane electron transport in narrow gap heterostructures. Special attention is paid to the consequences of the strong nonparabolicity of the conduction band. The electron states are calculated within the framework of envelope function theory,…

Journal of Applied Physics, 2002, 92 (9), pp.5286-5295. ⟨10.1063/1.1511820⟩. ⟨hal-00148646⟩

• Communication dans un congrès

On the physical interest of some numerical methods for wave phase conjugation in active media

A. Merlen, Vladimir Preobrazhensky, Philippe Pernod

2002, pp.208. ⟨hal-00148692⟩

• Article dans une revue

Characterization method of film-shaped materials. Pressure effect measurement on the electromagnetic properties into an absorbent material of compressed powder

J. Hinojosa, K. Lmimouni

AEU. International Journal of Electronics and Communications, 2002, 56, pp.211-214. ⟨hal-00148716⟩