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Communication dans un congrès

Near-field scanning microwave microscope for subsurface non-destructive characterization

Sijia Gu, Kamel Haddadi, Abdelhatif El Fellahi, Tuami Lasri

We report a nondestructive testing system based on near-field scanning microwave microscopy. The instrumentation is built up with a vector network analyzer, a fully automated tuning matching network and an evanescent microwave probe. The system can perform microwave images in the frequency band 0.1...

45th European Microwave Conference (EuMC), Sep 2015, Paris, France. pp.155-158, ⟨10.1109/EuMC.2015.7345723⟩. ⟨hal-03224667⟩

Communication dans un congrès

Time-Frequency Processing Adapted for the Different Electromagnetic Compatibility Issues in the Railway Domain

Mohammed Raouf Kousri, Virginie Deniau, Marc Heddebaut, S. Baranowski, Jean Rioult

The railway environment is very rich in terms of electromagnetic disturbances. The variety of the transient and permanent interferences and the current evolution of the communication and signaling railway systems require the adaptation of EMC railway standards. In particular, standardized emission..., L'environnement électromagnétique du chemin de fer est très riche en termes de perturbations électromagnétiques. La variété des signaux transitoires et des interférences permanentes et l'évolution actuelle des systèmes de communication et de signalisation ferroviaire nécessitent l'...

EMC 2015, Joint IEEE International Symposium on Electromagnetic Compatibility and EMC Europe, Aug 2015, Dresden, Germany. 6p, ⟨10.1109/ISEMC.2015.7256353⟩. ⟨hal-01471551⟩

Article dans une revue

Ambiguity function and Cramer-Rao bounds for standard and new modified Costas signals

Nadjah Touati, Charles Tatkeu, Thierry Chonavel, Yassin El Hillali, Atika Rivenq

The Cramer-Rao bound (CRB) gives a lower variance bound that an estimator can achieve. Presented is a mathematical approach to estimate it for specific radar signals, namely Costas signals and their modified versions. The modified versions design consists in widening Costas frequency hops and...

Electronics Letters, 2015, 51 (19), pp.1497-1499. ⟨10.1049/el.2015.1092⟩. ⟨hal-01213613⟩

Article dans une revue

Drift velocity versus electric field in < 110 > Si nanowires: Strong confinement effects

Jing Li, Gabriel Mugny, Yann-Michel Niquet, Christophe Delerue

We have performed atomistic simulations of the phonon-limited high field carrier transport in < 110 > Si nanowires with small diameter. The carrier drift velocities are obtained from a direct solution of the non-linear Boltzmann transport equation. The relationship between the drift velocity...

Applied Physics Letters, 2015, 107 (6), pp.063103. ⟨10.1063/1.4928525⟩. ⟨hal-01615208⟩

Article dans une revue

Theoretical and experimental analyses of tunable Fabry-Perot resonators using piezoelectric phononic crystals

Marie-Fraise Ponge, Bertrand Dubus, Christian Granger, Jerome O. Vasseur, Mai Pham Thi, Anne-Christine Hladky

Theoretical and experimental analyses of piezoelectric stacks submitted to periodical electrical boundary conditions via electrodes are conducted. The presented structures exhibit Bragg band gaps that can be switched on or off by setting electrodes in short or open circuit. The band gap frequency...

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2015, 62 (6), pp.1114-1121. ⟨10.1109/TUFFC.2014.006919⟩. ⟨hal-03300133⟩

Communication dans un congrès

Characterization of flexible CMOS technology tranferred onto a metallic foil

Justine Philippe, Aurelien Lecavelier Des Etangs-Levallois, Philip Latzel, Francois Danneville, J.F. Robillard, Daniel Gloria, Emmanuel Dubois

In this work we demonstrate a method to transfer high-performance industrial CMOS circuits thinned down to 5.7 mu m and bond onto a 25-mu m-thick stainless steel foil with a 800-nm-thick indium layer. The bonding is performed at the temperature of 100 degrees C with an applied pressure of 1.2 bar....

2015 Joint International EUROSOI Workshop and International Conference on Ultimate Integration on Silicon, Jan 2015, Bologna, Italy. ⟨10.1109/ULIS.2015.7063747⟩. ⟨hal-03272691⟩

Communication dans un congrès

Experimental Study of Multilayer Piezo-magnetic SAW Delay Line for Magnetic Sensor

Meriem Elhosni, Sébastien Petit-Watelot, Michel Hehn, Sami Hage-Ali, Keltouma Ait Aissa, Daniel Lacour, Abdelkrim Talbi, Omar Elmazria

<div><p>This communication describes an experimental study of multilayer piezo-magnetic acoustic wave devices used as sensors of external magnetic fields applied in plane, parallel or perpendicular to the direction of the acoustic wave propagation direction. The considered device...

Eurosensors 2015, Sep 2025, Freiburg (Allemagne), France. pp.870 - 873, ⟨10.1016/j.proeng.2015.08.743⟩. ⟨hal-05415947⟩

Article dans une revue

A distributed antenna system for indoor accurate WiFi localization

Christophe Loyez, Michael Bocquet, C. Lethien, N. Rolland

Specific infrastructures are a key challenge for indoor geo-localization systems. In particular, an accurate narrowband localization technique using 802.11 g WiFi signals is proposed in this letter. The related system architecture is built on the basis of radio over fiber topology of distributed...

IEEE Antennas and Wireless Propagation Letters, 2015, 14, pp.1184-1187. ⟨10.1109/LAWP.2015.2396901⟩. ⟨hal-03561323⟩

Article dans une revue

Sound generation by non-synchronously oscillating rotor blades in turbomachinery

Di Zhou, Xiaoyu Wang, Jun Chen, Xiaodong Jing, Xiaofeng Sun

In this paper, the sound generation by non synchronously oscillating rotor blades in axial compressor is investigated with emphasis on establishing an analytical model for the corresponding sound field inside an annular duct. In terms of the present model, it is found that the acoustic frequency...

Journal of Sound and Vibration, 2015, 355, pp.150-171. ⟨10.1016/j.jsv.2015.06.018⟩. ⟨hal-01348664⟩

Communication dans un congrès

An overview of 15 years of French collaborative projects for the characterization of concrete properties by combining NDT methods

Jean-Paul Balayssac, Vincent Garnier, Géraldine Villain, Zoubir Medhi Sbartaï, Xavier Derobert, Bogdan Piwakowski, Denys Breysse, Jean Salin

This communication aims to present the evolution of the activities carried out in France for assessing concrete properties by combining NDT methods. An important effort was done for improving NDT methods, particularly for more suitable on-site applications (for instance use of ultrasonic non-...

NDT-CE 2015, International Symposium Non-Destructive Testing in Civil Engineering, Sep 2015, BERLIN, Germany. 11p. ⟨hal-01608964⟩