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Affichage de 6291 à 6300 sur 16170

Communication dans un congrès

CPW-fed dual band monopole antenna based on conductive polymers

Z. Hamouda, J.-L. Wojkiewicz, A.A. Pud, Lamine Kone, B. Belaabed, S. Bergheul, T. Lasri

This paper describes the design, fabrication and characterization of a flexible CPW-fed monopole organic antenna, based on a multiwall carbon nanotubes (MWCNT) doped Polyaniline (PANI). The antenna is printed on a 130μm Kapton® substrate. The design proposed allows the coverage of two frequency…

9th European Conference on Antennas and Propagation, EuCAP 2015, May 2015, Lisbon, Portugal. pp.7228379. ⟨hal-03538363⟩

Article dans une revue

Degradation assessment of LYRA after 5 years on orbit : Technology Demonstration

A. Benmoussa, B. Giordanengo, S. Gissot, I. E. Dammasch, M. Dominique, Jean-François Hochedez, A. Soltani, Nour Eddine Bourzgui, T. Saito, U. Schühle, A. Gottwald, U. Kroth, A. R. Jones

We present a long-term assessment of the radiometric calibration and degradation of the Large Yield Radiometer (LYRA), which has been on orbit since 2009. LYRA is an ultraviolet (UV) solar radiometer and is the first space experiment using aboard a pioneering diamond detector technology. We show…

Experimental Astronomy, 2015, 30 (1), pp.29-43. ⟨10.1007/s10686-014-9437-7⟩. ⟨hal-01102475⟩

Communication dans un congrès

Study of an hybridization gap in a one dimensional piezoelectric phononic crystal

Sid Ali Mansoura, Bruno Morvan, Pierre Maréchal, Anne-Christine Hladky, Bertrand Dubus

A one dimensional Phononic Crystals (PC) composed of a periodic stack including piezoelectric plates is studied. When the size of the pattern is a multiple of the wavelength, Bragg gaps appear based on interference mechanisms. In addition to this property, it is shown in this paper that the use of…

Proceedings of the ICU International Congress on Ultrasonics 2015, May 2015, Metz, France. ⟨10.1016/j.phpro.2015.08.154⟩. ⟨hal-03300132⟩

Article dans une revue

Frequency response modeling and optimization of a PIN photodiode based on GaN/InGaN adapted to photodetection at a wavelength of 633 nm

M. El Besseghi, Abdelkader Aissat, Bandar Alshehri, Karim Dogheche, El Hadj Dogheche, Didier Decoster

In this paper, the frequency response calculation and optimization of PIN photodiodes based on GaN/InGaN, suitable for photodetection at the wavelength of 633 nm, are presented. The calculations of the impulse as well as the frequency response are performed using the impulse method. The frequency…

Material chemical physics journal, 2015, 162, pp.525-530. ⟨hal-03682556⟩

Article dans une revue

Surface Plasmon Resonance (SPR) for the Evaluation of Shear-Force-Dependent Bacterial Adhesion

Sabine Szunerits, Rabah Boukherroub, Florin Oancea, Stefan-Ovidiu Dima, Sebastien G. Gouin, Dimitri Alvarez-Dorta, Aritz Yanguas Serrano, Iban Larroulet, Rostyslav Bilyy, Tetiana Dumych, J. Bouckaert, Oleksandr Zagorodko

The colonization of Escherichia coli (E. coli) to host cell surfaces is known to be a glycan-specific process that can be modulated by shear stress. In this work we investigate whether flow rate changes in microchannels integrated on surface plasmon resonance (SPR) surfaces would allow for…

Biosensors, 2015, 5 (2), pp.276-287. ⟨10.3390/bios5020276⟩. ⟨hal-03172933⟩

Communication dans un congrès

Impact of clustering at mmW band frequencies

Maria-Teresa Martinez-Ingles, Davy Gaillot, Juan Pascual-Garcia, Jose-Maria Garcia-Pardo, Martine Lienard, Jose-Victor Rodriguez, Leandro Juan-Llacer

In this work different clustering approaches are investigated in the millimeter-wave (mm-W) frequency band from measurements and simulations. Multipath Component (MPC) parameters have been extracted from both measurements and simulations using RiMAX. Following this step, several clustering…

2015 IEEE International Symposium on Antennas and Propagation & North American Radio Science Meeting, AP-S/URSI 2015, Jul 2015, Vancouver, Canada. pp.1009-1010, ⟨10.1109/APS.2015.7304892⟩. ⟨hal-03346241⟩

Communication dans un congrès

Large-signal modeling up to W-band of AlGaN/GaN based high-electron-mobility transistors

Adrien Cutivet, Philippe Altuntas, N. Defrance, Etienne Okada, Vanessa Avramovic, Marie Lesecq, Virginie Hoel, Jean-Claude de Jaeger, F. Boone, Maher, Hassan

This paper reports on the development of a thermo-electrical non-linear model for sub-100 nm gate length AR:aN/GaN High-Electron-Mobility Transistors (HEMT) grown on silicon (111) substrate by Molecular Beam Epitaxy (MBE). The presented model benefits from the innovative implementations of a sub-…

10th European Microwave Integrated Circuits Conference (EuMIC), Sep 2015, Paris, France. pp.93-96, ⟨10.1109/EuMIC.2015.7345076⟩. ⟨hal-03276915⟩

Article dans une revue

Tunability of a One-Dimensional Elastic/Piezoelectric Phononic Crystal Using External Capacitances

S. Degraeve, C. Granger, Bertrand Dubus, Jerome O. Vasseur, M. Pham Thi, Anne-Christine Hladky

A superlattice made of alternate rods constituted of piezoelectric ceramic and elastic material is shown, theoretically and experimentally, to exhibit wide Bragg band gaps. The width of these stop bands is affected not only by the elastic impedance ratio between the constituent materials but also…

Acta Acustica united with Acustica, 2015, 101 (3), pp.494-501. ⟨10.3813/AAA.918846⟩. ⟨hal-03300127⟩

Communication dans un congrès

A coupler-free differential noise figure measurement technique without noise source on a two-port network analyzer

Yogadissen Andee, Caroline Arnaud, Philippe Seurre, Francois Danneville

This paper presents a measurement technique for the noise figure of differential amplifiers using commercially-available 2-port network analyzers. It is based on the measurement of the noise wave correlation at the output ports of the differential amplifier. A simple measurement setup is used as…

IEEE Radio and Antenna Days of the Indian Ocean (RADIO), Sep 2015, Belle Mare, Mauritius. ⟨10.1109/RADIO.2015.7323398⟩. ⟨hal-03272704⟩

Article dans une revue

High density terahertz frequency comb produced by coherent synchrotron radiation

S Tammaro, Olivier Pirali, P Roy, Jean-Francois Lampin, Guillaume Ducournau, Arnaud Cuisset, Francis Hindle, Gaël Mouret

Frequency combs have enabled significant progress in frequency metrology and high-resolution spectroscopy extending the achievable resolution while increasing the signal-to-noise ratio. In its coherent mode, synchrotron radiation is accepted to provide an intense terahertz continuum covering a wide…

Nature Communications, 2015, 6 (1), pp.1-6 / Article n° 7733. ⟨10.1038/ncomms8733⟩. ⟨hal-04830388⟩