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Conception Dantennes Imprimees Passives Et Actives Pour Des Applications En Environnement Automobile
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Book Synopsis Conception d'antennes imprimées passives et actives pour des applications en environnement automobile by : Cyril Luxey
Download or read book Conception d'antennes imprimées passives et actives pour des applications en environnement automobile written by Cyril Luxey and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CONCEPTION D'ANTENNES IMPRIMEES PASSIVES ET ACTIVES POUR DES APPLICATIONS EN ENVIRONNEMENT AUTOMOBILE by : CYRIL.. LUXEY
Download or read book CONCEPTION D'ANTENNES IMPRIMEES PASSIVES ET ACTIVES POUR DES APPLICATIONS EN ENVIRONNEMENT AUTOMOBILE written by CYRIL.. LUXEY and published by . This book was released on 1999 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS LE DOMAINE DES TRANSPORTS AUTOMOBILE, ON FAIT DE PLUS EN PLUS APPEL A L'AUTOMATISATION EN DEVELOPPANT DES SYSTEMES ELECTRONIQUES EMBARQUES QUI ONT POUR ROLE LA SECURITE ACTIVE DES PASSAGERS (ASSISTANCE A LA CONDUITE) ET LES COMMUNICATIONS AVEC L'EXTERIEUR (GESTION DU TRAFIC, TRANSACTIONS COMMERCIALES, INFORMATIONS AU CONDUCTEUR, IDENTIFICATION AUTOMATIQUE DE VEHICULES). LES CAPTEURS MICROONDES, TANT EN FAIBLE PORTEE QU'EN LONGUE PORTEE, SEMBLENT LES MIEUX ADAPTES POUR REALISER CES DIVERSES FONCTIONS ELECTRONIQUES. CE MEMOIRE DECRIT LA CONCEPTION DE CIRCUITS HYBRIDES HYPERFREQUENCES ORIGINAUX UTILISABLES EN ENVIRONNEMENT AUTOMOBILE. DES ANTENNES MICRORUBANS A ONDES DE FUITE ONT ETE ENVISAGEES COMME ANTENNES JANUS DE RADARS CINEMOMETRIQUES QUI, LORSQU'ILS SONT PLACES SOUS UN VEHICULE, PERMETTENT DE MESURER PRECISEMENT SA VITESSE. POUR DES ANTENNES A RAYONNEMENT SIMPLE FAISCEAU, NOUS AVONS PRESENTE UN NOUVEAU MOYEN D'ALIMENTATION PAR GUIDE D'ONDES COPLANAIRE. UN MODELE ANALYTIQUE SIMPLE ET RAPIDE QUI REND COMPTE DU DEPOINTAGE DU FAISCEAU RAYONNE EN FONCTION DE LA FREQUENCE A ETE DEVELOPPE ET VALIDE EXPERIMENTALEMENT PAR PLUSIEURS REALISATIONS EN BANDE C. NOUS AVONS EGALEMENT CONCU DES ANTENNES RAYONNANT UN DOUBLE FAISCEAU AINSI QUE DES RESEAUX D'ANTENNES RAYONNANT UN SIMPLE OU UN DOUBLE PINCEAU. DES MELANGEURS QUASI-OPTIQUES A DIODES SCHOTTKY ONT ETE ENVISAGES COMME RECEPTEURS INTEGRES FAIBLE COUT. CES DISPOSITIFS ETANT SOUVENT POSITIONNES A L'INTERIEUR DU VEHICULE, IL EST ALORS IMPORTANT DE REDUIRE LES RAYONNEMENTS PARASITES QUI SONT EXTREMEMENT NUISIBLES EN ENVIRONNEMENT AUTOMOBILE. LE PREMIER OBJECTIF A DONC CONSISTE A DEVELOPPER UNE STRUCTURE RAYONNANT PRINCIPALEMENT DANS UN DEMI-ESPACE TANDIS QUE L'OBJECTIF FINAL CONSISTAIT A MINIMISER LES RAYONNEMENTS ENGENDRES PAR L'OSCILLATEUR LOCAL. DES TRANSPONDEURS ACTIFS A DUPLEXAGE DE POLARISATION ONT ETE ENVISAGES POUR DES COMMUNICATIONS ITS BORNE FIXE-VEHICULE ET VEHICULE-VEHICULE A 5,8 GHZ. NOUS AVONS DECRIT LA CONCEPTION D'UN TRANSPONDEUR CONSTITUE D'UNE ANTENNE PAVE MICRORUBAN STRIE A DOUBLE POLARISATION LINEAIRE INTEGRANT UN OSCILLATEUR MICRORUBAN A MESFET. CE TRANSPONDEUR UTILISE LE SIGNAL INCIDENT POUR VERROUILLER SON OSCILLATEUR LOCAL ET TRANSMETTRE AINSI UN SIGNAL STABLE ET PUR A POLARISATION ORTHOGONALE A CELLE RECUE MEME SI LE SIGNAL INTERROGATEUR EST FAIBLE. UNE AMELIORATION DE CE DISPOSITIF A CONSISTE A COMBINER DEUX DE CES TRANSPONDEURS EN UN RESEAU RETRODIRECTIF DE VAN ATTA QUI POSSEDE LA PARTICULARITE DE RETRANSMETTRE UN SIGNAL DANS LA DIRECTION DE L'INTERROGATEUR.
Download or read book Conference Proceedings written by and published by . This book was released on 2003 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conception d'antennes reconfigurables pour radars automobiles à 77 GHz by : Ghayath El Haj Shhade
Download or read book Conception d'antennes reconfigurables pour radars automobiles à 77 GHz written by Ghayath El Haj Shhade and published by . This book was released on 2012 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'augmentation des exigences en matière de sécurité dans l'automobile impose des scénarii routiers complexes et variés impliquant des performances de détection élevées des radars automobiles d'assistance, associées à des contraintes de compacité et de faible coût. Ainsi, le système antennaire doit être le plus agile possible pour satisfaire les attentes des générations futures en termes de champs de vision, précision en angle, vitesse, distance etc... Le travail de cette thèse porte sur la conception d'antennes reconfigurables pour les radars automobiles à 77 GHz et leurs applications à la sécurité active. Après identification des futurs besoins, nous avons effectué une étude bibliographique précise et critique des solutions antennaires possibles ; nous sommes ainsi parvenus à établir une matrice de choix prenant en compte de nombreux critères (performances, coûts, maturité technologique...). Notre choix s'est finalement arrêté sur les antennes à ondes de fuite. Plusieurs solutions ont été étudiées et une solution originale a été identifiée. Cette dernière a été pré-dimensionnée d'abord en 2D et ensuite simulée en 3D pour aboutir à une conception précise. Une solution permettant le balayage du faisceau à fréquence fixe a également été proposée. L'influence de l'environnement proche de l'antenne a enfin été étudiée et les résultats numériques ont été validés expérimentalement à 77 GHz par la fabrication d'un prototype.
Book Synopsis Glowworm Swarm Optimization by : Krishnanand N. Kaipa
Download or read book Glowworm Swarm Optimization written by Krishnanand N. Kaipa and published by Springer. This book was released on 2017-01-10 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive account of the glowworm swarm optimization (GSO) algorithm, including details of the underlying ideas, theoretical foundations, algorithm development, various applications, and MATLAB programs for the basic GSO algorithm. It also discusses several research problems at different levels of sophistication that can be attempted by interested researchers. The generality of the GSO algorithm is evident in its application to diverse problems ranging from optimization to robotics. Examples include computation of multiple optima, annual crop planning, cooperative exploration, distributed search, multiple source localization, contaminant boundary mapping, wireless sensor networks, clustering, knapsack, numerical integration, solving fixed point equations, solving systems of nonlinear equations, and engineering design optimization. The book is a valuable resource for researchers as well as graduate and undergraduate students in the area of swarm intelligence and computational intelligence and working on these topics.
Book Synopsis Wideband, Multiband, and Smart Antenna Systems by : Mohammad Abdul Matin
Download or read book Wideband, Multiband, and Smart Antenna Systems written by Mohammad Abdul Matin and published by Springer Nature. This book was released on 2021-09-21 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides current R&D trends and novel approaches in design and analysis of broadband, multiband, and smart antennas for 5G and B5G mobile and wireless applications, as well as the identification of integration techniques of these antennas in a diverse range of devices. The book presents theoretical and experimental approaches to help the reader in understanding the unique design issues and more advanced research. Moreover, the book includes chapters on the fundamentals of antenna theory. The book is pertinent to professionals and researchers working in the field of antenna engineering; it is written for graduate students, researchers, academics, and industry practitioners who want to improve their understanding in the current research trends in design analysis of broadband, multiband, and smart antennas for wireless applications.
Book Synopsis Microwave Scanning Antennas: Apertures by : Robert C. Hansen
Download or read book Microwave Scanning Antennas: Apertures written by Robert C. Hansen and published by . This book was released on 1964 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji
Download or read book Quantum Mechanics, Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Book Synopsis Semiconductor TeraHertz Technology by : Guillermo Carpintero
Download or read book Semiconductor TeraHertz Technology written by Guillermo Carpintero and published by John Wiley & Sons. This book was released on 2015-07-14 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key advances in Semiconductor Terahertz (THz) Technology now promises important new applications enabling scientists and engineers to overcome the challenges of accessing the so-called "terahertz gap". This pioneering reference explains the fundamental methods and surveys innovative techniques in the generation, detection and processing of THz waves with solid-state devices, as well as illustrating their potential applications in security and telecommunications, among other fields. With contributions from leading experts, Semiconductor Terahertz Technology: Devices and Systems at Room Temperature Operation comprehensively and systematically covers semiconductor-based room temperature operating sources such as photomixers, THz antennas, radiation concepts and THz propagation as well as room-temperature operating THz detectors. The second part of the book focuses on applications such as the latest photonic and electronic THz systems as well as emerging THz technologies including: whispering gallery resonators, liquid crystals, metamaterials and graphene-based devices. This book will provide support for practicing researchers and professionals and will be an indispensable reference to graduate students in the field of THz technology. Key features: Includes crucial theoretical background sections to photomixers, photoconductive switches and electronic THz generation & detection. Provides an extensive overview of semiconductor-based THz sources and applications. Discusses vital technologies for affordable THz applications. Supports teaching and studying increasingly popular courses on semiconductor THz technology.
Book Synopsis Conceptual Basis, Formalisations and Parameterization of the Stics Crop Model by : Nadine Brisson
Download or read book Conceptual Basis, Formalisations and Parameterization of the Stics Crop Model written by Nadine Brisson and published by Editions Quae. This book was released on 2009-01-19 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The STICS crop model has been developed since 1996 at INRA in collaboration with other research and technical institutes. The model syntheses, illustrates and concretizes an important part of the French agronomic knowledge as a point of view on the field and cropping systems working. The formalisations of the STICS crop model presented in this book can be considered as references used in the framework of crop sciences. The book arrangement relies on the way the model designs the crop-soil system functioning, each chapter being devoted to a set of important functions such as growth initiation, yield onset, water uptake, transformation of organic matter etc. One chapter deals with the cropping system and long term simulations and the final chapter is about the involvement of the user in terms of option choices and parameterization. If this book is mainly intended for scientists who use the STICS model, it can also be useful for agronomists, crop modellers, students and technicians looking for elementary formalizations of the crop-soil system functioning.
Book Synopsis Fundamentals of Short-range FM Radar by : Igor V. Komarov
Download or read book Fundamentals of Short-range FM Radar written by Igor V. Komarov and published by Artech House. This book was released on 2003 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here's a unique new resource that offers you a solid understanding of the fundamental theory, operation principles and applications of short-range frequency modulated continuous wave (FM CW) radar. You learn how to choose the structural scheme of short-range FM radar, and determine the optimal algorithm of useful signal processing necessary for ensuring the technical characteristic of radar. Moreover, this practical reference shows you how to ensure the minimum level of radar signal parasitic amplitude, calculate modulation signal distortion, and compensate for nonlinear distortion.
Book Synopsis Low Frequency Scattering by : George Dassios
Download or read book Low Frequency Scattering written by George Dassios and published by Oxford University Press. This book was released on 2000 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scattering theory deals with the interactions of waves with obstacles in their path, and low frequency scattering occurs when the obstacles involved are very small. This book gives an overview of the subject for graduates and researchers, for the first time unifying the theories covering acoustic, electromagnetic and elastic waves.
Book Synopsis Ultra Wide Band Antennas by : Xavier Begaud
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Book Synopsis Microwave and RF Design of Wireless Systems by : David M. Pozar
Download or read book Microwave and RF Design of Wireless Systems written by David M. Pozar and published by John Wiley & Sons. This book was released on 2000-11-29 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: David Pozar, author of Microwave Engineering, Second Edition, has written a new text that introduces students to the field of wireless communications. This text offers a quantitative and, design-oriented presentation of the analog RF aspects of modern wireless telecommunications and data transmission systems from the antenna to the baseband level. Other topics include noise, intermodulation, dynamic range, system aspects of antennas and filter design. This unique text takes an integrated approach to topics usually offered in a variety of separate courses on topics such as antennas and proagation, microwave systems and circuits, and communication systems. This approach allows for a complete presentation of wireless telecommunications systems designs. The author's goal with this text is for the student to be able to analyze a complete radio system from the transmitter through the receiver front-end, and quantitatively evaluate factors. Suitable for a one-semester course, at the senior or first year graduate level. Note certain sections have been denoted as advanced topics, suitable for graduate level courses.
Book Synopsis Thinking Translation by : Sandor Hervey
Download or read book Thinking Translation written by Sandor Hervey and published by Routledge. This book was released on 2002-09-11 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thinking Translation is a comprehensive and revolutionary 20-week course in translation method. It has been fully and successfully piloted at the University of St. Andrews. The course offers a challenging and entertaining approach to the acquisition of translation skills. Translation is presented as a problem-solving discipline. Discussion, examples and a full range of exercise work allows students to acquire the skills necessary for a broad range of translation problems. Thinking Translation draws on a wide range of material from technical texts to poetry and song.
Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) - The first book to show how MIMO principles can be implemented in today's mobile broadband networks and components - Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems - Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
Author :Marvin Kantor Publisher :University of Michigan Department of Slavic Lang Ures ISBN 13 : Total Pages :322 pages Book Rating :4.3/5 (91 download)
Book Synopsis Medieval Slavic Lives of Saints and Princes by : Marvin Kantor
Download or read book Medieval Slavic Lives of Saints and Princes written by Marvin Kantor and published by University of Michigan Department of Slavic Lang Ures. This book was released on 1983 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
