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Affichage de 3001 à 3010 sur 16064

Article dans une revue

Elastic Metasurfaces for Deep and Robust Subwavelength Focusing and Imaging

Yabin Jin, Wan Wang, Abdelkrim Khelif, Bahram Djafari-Rouhani

Metasurfaces are planar metamaterials with a flat surface and a subwavelength thickness that are able to shape arbitrary wave fronts such as focusing or imaging. There is a broad interest in the literature about subwavelength focusing and imaging based on bulk metamaterials while the utilization of...

Physical Review Applied, 2021, 15, pp.024005 (10). ⟨10.1103/PhysRevApplied.15.024005⟩. ⟨hal-03414227⟩

Communication dans un congrès

20 Gbit/s 306 GHz link enabled by Yagi-Uda antenna

Guillaume Ducournau, Fabio Pavanello, Aritrio Bandyopadhyay, Cybelle Belem-Gonçalves, Frédéric Gianesello, Cyril Luxey, Emilien Peytavit, Jean-Francois Lampin, Malek Zegaoui, Mohammed Zaknoune

We report on the use of a Yagi-Uda antenna on polymer substrate used in a 306 GHz-20 Gbit/s real-time data link for indoor applications. The Yagi-Uda antenna is described and the validation of the THz link is obtained in amplitude modulation mode and using QAM-16 signals (32 Gbit/s).

2021 URSI GASS Conference, Session D08: Integrated Terahertz Electronic and Photonic Devices and Systems (Part 2), Aug 2021, Rome, Italy. pp.939-942. ⟨hal-03413356⟩

Article dans une revue

Optimization of Reactive-Ion Etching (RIE) parameters to maximize the lateral etch rate of silicon using SF6/N2 gas mixture: An alternative to etching Si in MEMS with Au components

Munique Kazar Mendes, Cécile Ghouila-Houri, Serria Hammami, Thomas Arnoult, Philippe Pernod, Abdelkrim Talbi

In this work, the effects of the N2 addition to the SF6 plasma used in the isotropic silicon etching of Microelectromechanical systems (MEMS) with Au components are investigated. A four-variables Doehlert design was implemented for optimizing the etching parameters (power, pressure, gas flow rate,...

Materials Letters, 2021, 285, pp.129058. ⟨10.1016/j.matlet.2020.129058⟩. ⟨hal-03330078⟩

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⟩

Chapitre d'ouvrage

11 - Photonic Monomode Circuits: Comb Structures

Abdellatif Akjouj, El Houssaine El Boudouti, L. Dobrzynski, Bahram Djafari-Rouhani

Photon circuits are light conducting networks formed by joining several dielectric waveguide channels for the transmission of light. Their production utilizes the most advanced surface technologies and represents one of the most important challenges for the next decade. These circuits are usually...

Photonics, Part 2: Photonic Circuits, Elsevier, pp.219-285, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00021-6⟩. ⟨hal-03359900⟩

Chapitre d'ouvrage

9 - Electromagnetic Induced Transparency, Induced Absorption, and Fano Resonances in Photonic Circuits

El Houssaine El Boudouti, Abdellatif Akjouj, Bahram Djafari-Rouhani, Abdelkrim Talbi, L. Dobrzynski

In this chapter, a simple photonic device consisting of two dangling side resonators grafted at two sites (U-shape) or at the same site (cross-shape) along a waveguide is designed in order to obtain sharp resonant states inside the transmission gaps without introducing any defects in the structure...

Photonics, Part 2: Photonic Circuits, Elsevier, pp.155-191, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00019-8⟩. ⟨hal-03359904⟩

Article dans une revue

Aggregated Euclidean Distances for a Fast and Robust Real-Time 3D-MOT

Rahmad Sadli, Mohamed Afkir, Abdenour Hadid, Atika Rivenq, Abdelmalik Taleb-Ahmed

Autonomous driving systems must have the ability to monitor the kinematic behaviour of multiple obstacles. Therefore, 3D multi-object tracking (3D-MOT) is one of the crucial modules in autonomous driving to detect the presence of potential hazard movements such as human operated vehicles and...

IEEE Sensors Journal, 2021, 21 (19), pp.21872-21884. ⟨10.1109/JSEN.2021.3104390⟩. ⟨hal-03442267⟩

Communication dans un congrès

A Novel Online Subcarrier-Wise Extreme Learning Machine Receiver for OFDM Systems

Michel Saideh, Eric Pierre Simon, Joumana Farah

Recently, Extreme Learning Machine (ELM) started gaining interest among researchers in wireless communications as an online training solution for machine learning based receivers. ELM has proven to provide high training speed and global optimization capabilities. However, the number of needed...

17th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2021), Oct 2021, Bologna, Italy. pp.259-264, ⟨10.1109/WiMob52687.2021.9606391⟩. ⟨hal-03592846⟩

Article dans une revue

A new equivalent circuit scheme for grounded back-to-back GCPW-MS-GCPW transitions fabricated on a thin low-k substrate

Pierre-Vincent Dugué, Mohammed El Gibari, Mathieu Halbwax, Stephane Ginestar, Vanessa Avramovic, Jean-Pierre Vilcot, Hong Wu Li

We hereby present a new equivalent circuit model including both lumped and distributed elements for GCPW-MS transitions (GCPW for Grounded CoplanarWaveguide and MS for Microstrip). In order to validate the modelling results, such transitions have been fabricated on a 20 μm-thick BCB (...

Progress In Electromagnetics Research Letters, 2021, 95, pp.33-42. ⟨10.2528/PIERL20093003⟩. ⟨hal-03054270⟩

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⟩