WorldCat Identities

Ferrero, Fabien

Overview
Works: 16 works in 27 publications in 3 languages and 307 library holdings
Genres: Conference papers and proceedings 
Roles: Editor, Opponent, Other, Thesis advisor, Author
Publication Timeline
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Most widely held works by Fabien Ferrero
Sensor systems and software : 7th International Conference, S-Cube 2016, Sophia Antipolis, Nice, France, December 1-2, 2016, Revised selected papers by EAI International Conference on Sensor Systems and Software( )

11 editions published in 2017 in English and German and held by 290 WorldCat member libraries worldwide

This book constitutes the thoroughly refereed post-conference proceedings of the 7th EAI International Conference on Sensor Systems and Software, S-Cube 2016, held in Sophia Antipolis, Nice, France, in December 2016. The 15 revised full papers and 5 invited papers cover technologies for wireless sensor networks, smart city and industry 4.0 applications, and smart sensing
Reconfiguration dynamique d'antennes imprimées en directivité et polarisation by Fabien Ferrero( Book )

2 editions published in 2007 in French and held by 2 WorldCat member libraries worldwide

Ce travail porte sur l'étude d'antennes agiles en directivité et polarisation, et de leurs circuits d'alimentation. Cette agilité est obtenue au moyen de différents éléments actifs dont les propriétés sont mises à profit pour modifier le fonctionnement électromagnétique des antennes. Des composants semi-conducteurs classiques comme les diodes PIN ou les varactors sont ainsi reportés sur des circuits d'alimentation des antennes selon les techniques MIC (microwave integrated circuit). Une architecture innovante de coupleur reconfigurable à base de varactors est proposée, étudiée et théorisée. Ce coupleur hybride est associé à une antenne à double alimentation orthogonale. Le système complet permet une reconfiguration de la polarisation de l'onde rayonnée par l'antenne, allant d'une polarisation parfaitement linéaire à une polarisation circulaire. Les mesures de cette antenne montrent un rapport axial pour la polarisation circulaire de 0,8dB. Une seconde application proposée permet de réaliser éléctroniquement une variation sur un angle de 90° de la direction de polarisation d'une antenne. Les mesures montrent qu'une polarisation linéaire de qualité est conservée tout au long de la rotation. Dans une troisième étude, une antenne microruban est associée à deux éléments parasites sur un même substrat. En modifiant la réactance de charge des deux éléments parasites, une reconfiguration du diagramme de rayonnement de l'antenne est observée. Enfin, différentes solutions sont proposées pour alimenter un réseau linéaire. Une première solution utilisant deux coupleurs hybrides en mode réflexion et des diodes PIN permet de réduire le nombre de composants nécessaires à la conception. Un second déphaseur basé sur le coupleur reconfigurable et la méthode de la sommation des vecteurs en quadrature est étudiée. Ce déphaseur est associé à un réseau de deux antennes pour modifier l'angle de focalisation du réseau. Enfin, une solution totalement intégrée sur Silicium haute résistivité à 60 GHz utilisant des composants microsystèmes est étudiée et réalisée grâce au procédé micro-électronique de la société MEMScap. Les déphaseurs utilisent la technique des lignes commutées. Des commutateurs MEMS de type série et parallèles sont conçus, simulés et réalisés. Les système final occupe une place de 0,5*1mm²
Apport de l'effet d'ondes lentes pour la miniaturisation d'antennes et pour des applications de capteurs d'humidité by Anh Tu Ho( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

La technologie des guides d'ondes intégrés (SIW) est connue depuis la fin du vingtième siècle, suscitant l'attention des chercheurs et du monde industriel en raison des faibles pertes d'insertion, de leur tenue en puissance, de leur immunité électromagnétique et de leur faible coût de fabrication. Cependant, ces guides sont encombrants, ce qui constitue un inconvenient majeur pour leur intégration dans un système RF en dessous de 15 GHz. Ainsi, des guides d'onde SIW à ondes lentes (SW-SIW) ont été proposés en 2014, permettant d'offrir une forte compacité. Dans les présents travaux, une antenne à cavité SIW utilisant la topologie à ondes lentes (SW-CBSA) a été développée. Elle permet d'obtenir un gain de 5 dBic avec une miniaturisation de 47% par rapport à une technologie SIW classique. Deux réseaux d'antennes 1x4 ont également été réalisés, les réseaux d'alimentation considérant pour l'un des lignes microruban à ondes lentes, et pour l'autre des guides SIW à ondes lentes afin d'améliorer le blindage électromagnétique. Les deux réseaux d'antennes offrent de bonnes performances avec un gain mesuré de 10.8 dBi et une réduction de taille d'environ 65% par rapport au réseau d'antennes conçu en technologie SIW classique. Ensuite, des capteurs d'humidité ont été développés en combinant l'effet d'ondes lentes à des résonateurs SIW partiellement remplis d'air (PAF-SW-SIW). Ainsi, deux capteurs ont été proposés, un résonateur et une antenne quart mode PAF-SW-SIW permettant d'obtenir des réductions de surface de 74% et 93% par rapport aux structures équivalentes réalisées en technologie SIW remplie complètement d'air (AF-SIW). Pour l'antenne PAF-SW-SIW, une sensibilité de 283 kHz/RH% a été mesurée. Les deux études présentées dans ce travail de thèse ont permis de montrer l'intérêt de la topologie à ondes lentes pour réaliser des structures compactes tout en conservant des performances intéressantes
Antennes souples à base de métamatériaux de type conducteurs magnétiques artificiels pour les standards de systèmes de géolocalisation by Marcio Silva Pimenta( )

1 edition published in 2013 in French and held by 1 WorldCat member library worldwide

Thanks to the progress made in the recent years in the design of smart networks, such as wireless Body Area Network (WBAN), or Wireless Personal Area Network (WPAN), a novel type of emerging applications using smarts sensor measuring physiologic parameters, environmental et more particularly positioning of the persons are nowadays available. In the research presented in this manuscript, we are committed to design and realize antennas that can be possibly integrated into clothes, dedicated to the American GPS (1.227 GHz - 1.575 GHz) and European Galileo (1.180 GHz - 1.575 GHz) global navigation satellite systems. We used for these antennas a type of metamaterial structure named artificial magnetic conductor, to increase and enhance the radiation performance and reduce the coupling between the antenna and the human body. Another way has been explored using patch antenna solutions that are inherently low profile antennas. As the frequency band of the satellite communication system Iridium is close to the GPS one, we developed a dual band antenna solution covering both GPS (1.575 GHz) and Iridium (1.612 GHz) standards. The antenna being dedicated to be integrated over a human skull, the specific absorption rate and the radiation modification was also studied
Antennes reconfigurables pour les applications mobiles et réseaux sans fil by Le-Huy Trinh( )

1 edition published in 2015 in English and held by 1 WorldCat member library worldwide

Au cours de ces dernières années, les technologies de télécommunication ont fait d'énormes progrès, notamment dans les communications mobiles et les réseaux de capteurs sans fil (WSN). Pour répondre à l'augmentation de la capacité de transmission et à l'amélioration de la qualité des canaux de communications mobiles, l'élargissement de la bande de fonctionnement est nécessaire par l'utilisation d'antennes reconfigurables en fréquence. En outre, dans les applications WSN, afin de réduire les collisions, d'augmenter la distance de communication et d'optimiser la consommation, l'utilisation d'antennes reconfigurables en directivité est une bonne solution. Dans ce cadre, nos travaux de recherche ont portés sur la conception de différentes structures antennaires reconfigurables. Dans un premier temps nous avons réalisés une antenne reconfigurable à base de nouveaux éléments actifs, les digitally tunable capacitors (DTC). Ces composants sont de très bons candidats en vue d'une intégration d'antennes pour des applications communications mobiles et WSN. Ensuite nous nous sommes attachés à concevoir des structures multibande, MIMO et reconfigurables en fréquence, permettant d'augmenter la bande de fréquence de fonctionnement du système de communication, d'optimiser l'efficacité et la qualité spectrale et d'améliorer la qualité de canal. Enfin, une autre voie a été explorée, l'utilisation d'antennes reconfigurables en directivité pour des applications de WSN. Les résultats de simulation et de mesure sont également présentés dans ce chapitre. Grâce à l'utilisation de ce type de structures, la performance des WSN a été optimisée
Approximation H infini, interpolation analytique et optimisation convexe : application à l'adaptation d'impédance large bande by Gibin Bose( )

1 edition published in 2021 in English and held by 1 WorldCat member library worldwide

Design of frequency agile filter and mmWave antenna for 5G mobile devices by Jaakko Kyllonen( )

1 edition published in 2019 in English and held by 1 WorldCat member library worldwide

Mobile communications are in constant race to meet the demands of the users, especially in the terms of the amount of data they want to use. The introduction of the 5G NR (New Radio) will exceed the current limits but it needs technological breakthroughs to achieve its goals. To achieve the promises of the new 5G NR communication standard the electronics industry is interested in to develop new key components for tomorrow. The objective of this thesis work has been to design two key components to respond to the different future developments of the mobile devices. Therefore a frequency agile filter for frequencies below 6 GHz and a low cost antenna array around 28 GHz for 5G NR have been designed, manufactured and tested
Étude, conception et caractérisation de nouvelles topologies d'antennes à résonateurs diélectriques : application aux nouveaux systèmes de communications sans fil by Kaoutar Allabouche( )

1 edition published in 2017 in French and held by 1 WorldCat member library worldwide

Nowadays, the constant increase of information traffic leads to a spectacular technological development in the field of telecommunications, whether it is cellular network, television, satellite, WIFI or other applications. This revolution is creating new needs and is inspiring a phenomenal technological evolution in the field of antenna design. Modern antennas in fact must meet increasingly harder requirements in terms of compactness, electromagnetic interference reduction, robustness to environment, increased gain, broadband bandwidth, intelligence, etc. The work carried out in this thesis mainly focuses on the design of new simple antenna topologies of small size, intelligent, insensitive to environment, broad and ultra-wide band. In particular, our interest focused on antennas based on Dielectric Resonators (DRs). In the field of the Internet of Things (IoT), we designed and realized a high-Q filter antenna based on a slot loaded rectangular dielectric resonator suitable for integration in compact IoT devices. We also designed and characterized an antenna based on a cylindrical shaped dielectric resonator (CDR). This antenna, which has been proposed to be integrated in smart meter devices, where interference sources are very present, has shown a great robustness to the surrounding environment. In addition, we proposed two new broadband and ultra-wideband antenna topologies. The first one is based on a cylindrical ring resonator, divided in four quarters characterized by two different permittivities. An air gap was inserted separating the resonator in two parts. This innovative structure gives our antenna a wide band behavior and stability in terms of radiation pattern. This structure has been used in an array configuration to achieve a reconfigurable radiation pattern. Starting from this work, the second antenna achieves an ultra-wideband behavior by adopting a new feeding technique as well as a reduced ground plane
Conception d'antennes et de circuits d'adaptation associés pour des objets communicants 4G by Aykut Cihangir( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

With the introduction of the fourth generation (4G) of cellular mobile communications, there has been an increase in the frequency bands that a generic mobile phone should be able to operate. This requirement poses some challenges in the design of the transceiver modules of the device as well as the RF front-end and the antenna. From the antenna design point of view, the newly added frequency bands especially LTE bands 12-13-17 which goes down to 700MHz creates the main design challenge: covering 700-960MHz (30% bandwidth) in the low-band, considering also backward compatibility with the former technologies like GSM850/900. Since the space reserved for the antenna is electrically small in this frequency range, special design techniques are necessary to obtain the required bandwidth for a generic mobile terminal antenna. It should also be taken into account in the design phase, that the antenna needs to be appropriate for operation in the data-rate enhancement techniques like MIMO (multiple input multiple output) and carrier aggregation in LTE-Advanced. Furthermore, considering the real use cases of the mobile terminal, the effect of the user (hand, head and both) on the antenna performance should also be investigated. In this thesis, several antenna designs for 4G coverage in mobile terminals are proposed. Different antenna topologies are evaluated consisting of tunable/passive antennas as well as single/multi-feed structures
Antennes agiles reconfigurables optiquement dans le domaine millimétrique avec l'intégration de matériaux à changement de phase by Jehison Rafael Leon Valdes( )

1 edition published in 2020 in French and held by 1 WorldCat member library worldwide

This thesis address the design and realization of optically reconfigurable antenna systems in the millimeter wave domain integrating phase change materials (PCM). The principle of agility is based on the changes in resistivity of PCM, which have the property of changing from an insulating (amorphous) to a conductive (crystalline) state in a reversible, repetitive and non-volatile (bistable) manner by the application of a thermal, electrical or optical external stimuli. We have designed and studied several frequency and polarization reconfigurable antennas operating around 30 GHz integrating GeTe as an agile element. Thus, we propose alternative solutions to conventional switching technologies for reconfigurability functions
Conception et mesure de systèmes multi-antennes pour les futures technologies 5G by Cyril Buey( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Cette thèse étudie les technologies porteuses de la 5ème génération de communication mobile telle que le MIMO et Massive MIMO ainsi que les divers challenges amenés par l'apparition de ces nouvelles technologies. Dans ce but un banc de mesure spécifique pour la caractérisation des performances des antennes MIMO en WLAN et LTE a été mis en œuvre. Dans un premier temps le banc de mesure a été réalisé à partir d'instruments de mesures Rhodes & Schwarz ; L'opportunité de travailler avec EURECOM nous a amenés à développer un second banc de test en utilisant l'OpenAirInterface, une plateforme open-source exploitant des systèmes de radio par logiciel. Nous avons conçu et réalisé une série de prototypes de routeur Wifi constitués de huit antennes. Chaque prototype est réalisé à partir d'antennes différentes (imprimées, 3D...). Nous avons également réalisé une seconde série prototype de routeur Wifi constitué de huit antennes imprimées sur plastique grâce à la technologie LDS. Une campagne de mesure a été réalisée avec ces prototypes sur le banc de test évoqué ci-dessus pour extraire des critères de performance antennaire utiles pour les applications MIMO. Ces études ont pour objectif d'apporter des éléments d'optimisation sur les techniques MIMO d'un point de vue antennaire. Une seconde partie de cette thèse est dédiée aux fréquences millimétriques qui sont au cœur de la 5G. Nous avons conçu un prototype de téléphone constitué de quatre antennes millimétriques. Une mesure permettant de prendre en compte les interférences avec le corps humain a été mise en place pour étudier les contraintes liées à l'implantation d'antennes millimétriques dans les futurs terminaux mobiles
Réduction de la consommation énergétique dans les modules M2M utilisant la technologie LTE/LTE-A by Hajer Ben Rekhissa( )

1 edition published in 2019 in French and held by 1 WorldCat member library worldwide

Machine-to-Machine (M2M) communication, which refers to the interaction between intelligent devices without human intervention, is gaining more prominence in mobile cellular networks. Long Term Evolution (LTE) and LTE-Advanced (LTE-A) networks are considered excellent candidates to support M2M communication. However, M2M communication over LTE/LTE-A networks faces some challenges. The main challenge is how to reduce energy consumption for M2M devices, as the majority of them are battery driven. The aim of this thesis is to propose solutions to reduce energy consumption in M2M devices over LTE/LTE-A technologies. We proposed two approaches; the first one consists of increasing time spent in low power mode by buffering data until reaching given thresholds of number of buffered data and maximum delay authorized. This approach allows to reduce signaling from idle state to connected state. Besides, it considers quality of service (QoS) requirements. The second approach consists of proposing two uplink schedulers which take into account the coexistence of M2M and Human-to-Human (H2H) devices. Both of them consider channel quality while allocating resource blocks, which have a consequence reducing energy consumption in M2M devices. Our second algorithm consider, also, delay constraint
Antennes compactes reconfigurables en diagramme de rayonnement pour la modulation spatiale MIMO et introduction aux communications numériques par rétrodiffuseurs by Kammel Rachedi( )

1 edition published in 2019 in French and held by 1 WorldCat member library worldwide

The Spatial Modulation MIMO (Multiple Input Multiple Output) SM-MIMO has emerged to meet both the growing need for high data rates and energy efficiency of connected devices for the Internet of Things (IoT) and wireless networks (5G , Wi-Fi, etc ...). It is characterized by the use of a network of transmitters. Each element of the transmitter network encodes a particular symbol. But this solution is not conceivable for the implementation of small connected objects. In the first part of the thesis, we have developed several reconfigurable antennas. For our purposes, a reconfigurable antenna has different radiation patterns whose each of them codes for a particular binary data. The first prototypes manufactured are based on a meander line in coupling with parasitic resonators. To increase the antenna's compactness, we have developed a split-ring antenna generating 8 different decorrelated radiation patterns at the frequency of 2.45GHz. To estimate the reliability of the radio transmission, we numerically compute and experimentally evaluate the probability of errors of transmission (BER) as a function of the Signal-to-Noise Ratio (SNR). Our antennas show promising results in the implementation of a digital communication in indoor environment. In the second part of the thesis, in order to transmit data to a receiver, we have exploited ambient electromagnetic waves as sources of opportunity. This new digital communication technique is based on a backscatter capable of switching between different states of impedence and thus modulating the ambient electric field. These networks are subject to deep fadings. In particular, it is shown that the interference pattern between a wave source, a backscatter and a receiver strongly depends on their location in space. We estimate the BER of backscatter communication and demonstrate that it depends on the power of contrast estimated by the receiver. At the end of the manuscript, possible search axes are given to improve the sensitivity of the receiver towards the backscatter and to increase the data rate of this digital communication
Conception de systèmes multi-antennaires pour techniques de diversité et MIMO : application aux petits objets nomades communicants by Ibra Dioum( )

1 edition published in 2013 in French and held by 1 WorldCat member library worldwide

The transmission demand for increasing data rate becomes more and more important with the development of new services in radio communication networks. To answer to this demand, one solution consists in increasing the transmission capacity of the radio channel between the base station and the handset terminal. This can be realized by increasing the number of radiating elements involved in the transmission and the reception of this radio link: we talk about MIMO (Multiple Input Multiple Output) technique. The work realized in this thesis concerns mainly design, optimization and characterization of multi-antenna systems for MIMO and diversity techniques in LTE (Long Term Evolution) bands. Three multi bands prototypes are proposed whose two planar systems and one compact IFAs antennas system. News multiband solution and antenna position influence on the PCB were studied to realize spatial, polarization and pattern diversity with low correlation between received signals on each antenna and a good efficiency. The neutralization line was used for antennas isolation and its application in multiband was realized. The antenna load impedance has been studied with Youla & Carlin method in order to improve the frequency bandwidth of the compact IFA structure. Diversity and MIMO performances of these systems were evaluated in different propagation environments. They show that these systems can be effectively used for diversity and MIMO application
Développement de système antennaire pour les communications 5G by Tran Quang Khai Nguyen( )

1 edition published in 2020 in English and held by 1 WorldCat member library worldwide

The work in this thesis has been funded by the French FUI project MASS-START (2017-2020). The project aims at the integration of 5G compatible baseband and radio subsystems into an Over-Air-Interface-based 5G terminal and gNodeB demonstrator, and the antenna array for end-to-end Multiple Input Multiple Output link experimentation. The scope of the thesis concerns the design and assessment of antenna systems that are to be used in the project.At 5G Frequency Range 1 band, the work concentrates on the development of a methodology to design antenna with a matching circuit for mobile terminals with limited area. The bandwidth limitation is evaluated using Quality-Factor. A Particle Swarm Optimization algorithm is proposed and examined in different antenna designs for mobile terminals. The final design demonstrates a system with three non-resonating coupling elements covering most of the sub-6GHz bands of 5G. At 5G Frequency Range 2 band, more precisely band n258 of Europe, different types of array antennas are studied. The work first checks two types of feeding for a patch antenna that can be integrated into Printed Circuit Board to have a low profile antenna and ease the fabrication procedure. The designs are later fabricated and experimentally evaluated. With a Millimeter-Wave array at hand, we proceed a measurement campaign in which the effects of the user's finger at close proximity of the antenna are evaluated. The losses due to absorption, reflection, diffraction are quantified and compared with numerical estimations in literature. A system of multiple end-fire arrays placed at different locations in a terminal is also studied showing the compromising effectiveness if one array is severely blocked
Étude et minimisation du facteur de qualité des antennes pour de petits objets communicants by Oumy Diop( )

1 edition published in 2013 in French and held by 1 WorldCat member library worldwide

Currently, wireless devices play an important role in everyday life. For ease-of-use, these devices are becoming smaller and require very small antennas. However, the size reduction of these antennas necessarily implies a degradation of their performance. Consequently, the design of electrically small antennas (ESA) requires a very good theoretical understanding of the electromagnetic phenomenon that takes place, especially in terms of accurate performance that can be expected for an ESA with given dimensions. An important parameter of an ESA is its intrinsic quality factor since it is inversely proportional to its impedance bandwidth. Indeed, maximizing the matching bandwidth of an antenna consists in minimizing its quality factor. Facing this problem, many researches have been developed to determine the possible limits of the quality factor of ESA. The first research axis of this thesis is to study the quality factor of ESA to determine whether optimal dimensions exist to approach the fundamental quality factor limits. The second part of the thesis studies miniature antennas for biomedical implants operating at 2.45 GHz. These antennas are printed on a specific microelectronic substrate to ensure a better resolution in terms of metallic traces in order to reduce the size and allow easier integration to facilitate interconnections with RF front-end. The challenge consists in maximizing the performance of these antennas. The presented results are supported by means of electromagnetic models and simulations on one hand. Also, several prototypes are fabricated to validate these simulations
 
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Languages
English (17)

French (9)

German (1)