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Affichage de 3111 à 3120 sur 16181

Article dans une revue

Near-field scanning millimeter-wave microscope operating inside a scanning electron microscope: towards quantitative electrical nanocharacterization

Petr Polovodov, Didier Theron, Clément Lenoir, D. Deresmes, Sophie Eliet, Christophe Boyaval, Gilles Dambrine, Kamel Haddadi

The main objectives of this work are the development of fundamental extensions to the existing scanning microwave microscopy (SMM) technology to achieve quantitative complex impedance measurements at the nanoscale. We developed an SMM operating up to 67 GHz inside a scanning electron microscope…

Applied Sciences, 2021, 11 (6), pp.2788. ⟨10.3390/app11062788⟩. ⟨hal-03320954v2⟩

Chapitre d'ouvrage

2 - Closed loop

L. Dobrzynski, Housni Al Wahsh, Abdellatif Akjouj, El Houssaine El Boudouti, Cécile Ghouila-Houri, Abdelkrim Talbi, Gaëtan Lévêque, Bahram Djafari-Rouhani

A closed loop can be obtained by linear superposition of the two free ends of an open loop. Its main property is the double degeneracy of its states. The analytical expressions of its eigenvalues, eigenfunctions, and response function are presented. The case of two simultaneous identical measures…

Photonics, Part one: photonic paths, Elsevier, pp.15-19, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00011-3⟩. ⟨hal-03350752⟩

Article dans une revue

New barrier layer design for the fabrication of gallium nitride-metal-insulator-semiconductor-high electron mobility transistor normally-off transistor

Flavien Cozette, Bilal Hassan, Christophe Rodriguez, Eric Frayssinet, Rémi Comyn, François Lecourt, Nicolas Defrance, Nathalie Labat, François Boone, Ali Soltani, Abdelatif Jaouad, Yvon Cordier, Hassan Maher

This paper reports on the fabrication of an enhancement-mode AlGaN/GaN metal-insulator-semiconductor-high electron mobility transistor with a new barrier epi-layer design based on double Al 0.2 Ga 0.8 N barrier layers separated by a thin GaN layer. Normally-off transistors are achieved with good…

Semiconductor Science and Technology, 2021, 36 (3), pp.034002. ⟨10.1088/1361-6641/abd489⟩. ⟨hal-03341284⟩

Communication dans un congrès

Analysis of the Susceptibility of the LoRa Communication Protocol in the Railway Electromagnetic Environment

Virginie Deniau, Thomas Vantroys, Norbert Becuwe, Christophe Gransart, Artur Nogueira de Sao Jose, Alexandre Boé, Eric Pierre Simon, Olivier Vlamynck, Florent Valenti, Jonathan Villain, Quentin Rivette

In the context of the digital transformation of railway transportation systems, railway operators investigate the potentialities of the IoT (Internet of Things) in order to optimize the maintenance operations on the vehicles and the infrastructures. One of the interest is to use IoT communication…

URSI GASS 2021, XXXIV General Assembly and Scientific Symposium (GASS) of the International Union of Radio Science (URSI), Aug 2021, Rome, Italy. 4p. ⟨hal-03265936⟩

Article dans une revue

Cobalt sulfide-reduced graphene oxide: An efficient catalyst for the degradation of rhodamine B and pentachlorophenol using peroxymonosulfate

Lylia Amirache, Fatiha Barka-Bouaifel, Priyakshree Borthakur, Manash R. Das, Hania Ahouari, Herve Vezin, Alexandre Barras, Baghdad Ouddane, Sabine Szunerits, Rabah Boukherroub

In this study, cobalt sulfide-reduced graphene oxide (CoS-rGO) nanocomposite was prepared by a solvothermal route and its structure, morphology and composition were assessed using various techniques, including transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR),…

Journal of Environmental Chemical Engineering, 2021, 9 (5), pp.106018. ⟨10.1016/j.jece.2021.106018⟩. ⟨hal-03332354⟩

Article dans une revue

Bandpass NGD function design for 5G microwave signal delay synchronization application

Sébastien Lalléchère, Lala Rajaoarisoa, Laurent Clavier, Raul Sanchez Galan, Blaise Ravelo

This paper introduces a design method of simple bandpass (BP) negative group delay (NGD) topology. The fundamental specifications of BP NGD function are defined. The NGD passive topology consists of parallel resistance associated with an open-ended microstrip stub. The NGD properties and…

Comptes Rendus. Physique, 2021, 22 (S1), pp.53-71. ⟨10.5802/crphys.68⟩. ⟨hal-03274859⟩

Communication dans un congrès

Détection d'attaques par signal de brouillage et identification de son éloignement

Jonathan Villain, Virginie Deniau, Christophe Gransart, Eric Pierre Simon, Anthony Fleury

Les réseaux sans fil Wi-Fi sont aujourd'hui dans tous les espaces, aussi bien publics que privés. Ils sont souvent utilisés pour accéder à des services ou assurer des fonctions opérationnelles à distance. Cependant, ces réseaux Wi-Fi peuvent être vulnérables et utilisés par des personnes…

CEM 2020, 20ème Colloque International et Exposition sur la Compatibilité ÉlectroMagnétique, Apr 2021, Lyon, France. 4p. ⟨hal-03264597⟩

Article dans une revue

MMIC Vector Topology Enabling Multi RF Functionalities for 5G and Beyond

Christophe Loyez, Michael Bocquet, Kamel Haddadi

This paper presents a vector topology of a monolithic microwave integrated circuit (MMIC) capable of performing several radiofrequency (RF) functionalities essential for future wireless communications and geolocation in the millimeter frequency band. The proposed circuit can address several usage…

IEEE Access, 2021, 9, pp.114418-114427. ⟨10.1109/ACCESS.2021.3098179⟩. ⟨hal-03334163⟩

Article dans une revue

Preanalytical issues and cycle threshold values in SARS-CoV-2 real-time RT-PCR testing: should test results include these?

Ilka Engelmann, Enagnon Kazali Alidjinou, Judith Ogiez, Quentin Pagneux, Sana Miloudi, Ilyes Benhalima, Mahdi Ouafi, Famara Sané, Didier Hober, Alain Roussel, Christian Cambillau, David Devos, Rabah Boukherroub, Sabine Szunerits

Since the emergence of SARS-CoV-2 pandemic, clinical laboratories worldwide are overwhelmed with SARS-CoV-2 testing using the current gold standard: real-time reverse-transcription polymerase chain reaction (RT-PCR) assays. The large numbers of suspected cases led to shortages in numerous reagents…

ACS Omega, 2021, 6 (10), pp.6528-6536. ⟨10.1021/acsomega.1c00166⟩. ⟨hal-03196337⟩

Article dans une revue

H-Band Substrate-Integrated Discrete-Lens Antenna for High Data Rate Communication Systems

Kossaila Medrar, Loïc Marnat, Laurent Dussopt, Cybelle Belem-Gonçalves, Guillaume Ducournau, Cyril Luxey, Frédéric Gianesello

A substrate-integrated discrete-lens antenna manufactured in standard printed-circuit-board (PCB) technology is demonstrated in H-band (225-325 GHz). The arrays composed of phase-shifting unit cells and a waveguide-fed planar focal source are designed on a single PCB stack with five metal layers…

IEEE Transactions on Antennas and Propagation, 2021, 69 (7), pp.3677-3688. ⟨10.1109/TAP.2020.3044382⟩. ⟨hal-03546303⟩