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Etude Dantennes A Faible Cout Pour Les Telecommunications Avec Des Mobiles
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Book Synopsis ETUDE D'ANTENNES A FAIBLE COUT POUR LES TELECOMMUNICATIONS AVEC DES MOBILES by : ANNE-CLAUDE.. TAROT
Download or read book ETUDE D'ANTENNES A FAIBLE COUT POUR LES TELECOMMUNICATIONS AVEC DES MOBILES written by ANNE-CLAUDE.. TAROT and published by . This book was released on 1995 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL DE THESE EST UNE CONTRIBUTION A L'ETUDE D'ELEMENTS RAYONNANTS A POLARISATION CIRCULAIRE DESTINES A ETRE INTEGRES DANS DES SYSTEMES DE COMMUNICATION AVEC DES MOBILES. DES ANTENNES MULTICOUCHES A LARGE BANDE, PERMETTANT DE COUVRIR SIMULTANEMENT LES BANDES D'EMISSION ET DE RECEPTION SONT TOUT D'ABORD PRESENTEES. ELLES ONT ETE REALISEES DANS UNE TECHNOLOGIE NOUVELLE METTANT A PROFIT LA METALLISATION DES MOUSSES (PAR SERIGRAPHIE DIRECTE D'UNE ENCRE A L'ARGENT OU PAR PRESSAGE A CHAUD D'UN FEUILLARD DE CUIVRE) ET UNE TECHNIQUE D'ACCROCHAGE DES DIFFERENTS MILIEUX. LA METHODE D'ANALYSE EST BASEE SUR LA RESOLUTION D'UN SYSTEME D'EQUATIONS INTEGRALES DE REACTION DANS LE DOMAINE SPECTRAL, PAR LA METHODE DE GALERKIN: CETTE METHODE BIEN ADAPTEE A L'ETUDE DE STRUCTURES MULTIDIELECTRIQUES PERMET DE PRENDRE EN COMPTE LES COUCHES D'ACCROCHAGE. UNE ANTENNE-DUPLEXEUR PRESENTANT UN TAUX DE REJECTION DE -40 DB ENTRE SES VOIES D'EMISSION ET DE RECEPTION A ETE ETUDIEE. ELLE EST CONSTITUEE DE 2 ANTENNES DISTINCTES REALISEES EN TECHNOLOGIE IMPRIMEE: UN ANNEAU COURT-CIRCUITE AU CENTRE ET UN DISQUE SUPERPOSE PERMETTANT D'ASSURER RESPECTIVEMENT LA RECEPTION ET L'EMISSION. LA METHODE D'ANALYSE EST CELLE DE LA CAVITE ET UN CODE DE CALCUL A ETE ELABORE POUR TRAITER L'ANNEAU COURT-CIRCUITE AINSI QUE LE COUPLAGE ENTRE LES 2 ANTENNES. DE NOMBREUSES REALISATIONS EXPERIMENTALES SONT PRESENTEES. ENFIN, CES ANTENNES ONT ETE UTILISEES POUR LA REALISATION D'UN RECEPTEUR MULTICAPTEUR A 1500 MHZ ET D'UN EMETTEUR NUMERIQUE 4 VOIES, AYANT FAIT L'OBJET DE DEUX CAMPAGNES DE MESURE
Book Synopsis Non-standard Antennas by : François Le Chevalier
Download or read book Non-standard Antennas written by François Le Chevalier and published by John Wiley & Sons. This book was released on 2013-01-09 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims at describing the wide variety of new technologies and concepts of non-standard antenna systems – reconfigurable, integrated, terahertz, deformable, ultra-wideband, using metamaterials, or MEMS, etc, and how they open the way to a wide range of applications, from personal security and communications to multifunction radars and towed sonars, or satellite navigation systems, with space-time diversity on transmit and receive. A reference book for designers in this lively scientific community linking antenna experts and signal processing engineers.
Book Synopsis ETUDE DE FAISABILITE D'UNE ANTENNE ADAPTATIVE GEREE PAR MICROPROCESSEUR POUR COMMUNICATIONS ENTRE MOBILES by : Abdelaziz Karmoudi
Download or read book ETUDE DE FAISABILITE D'UNE ANTENNE ADAPTATIVE GEREE PAR MICROPROCESSEUR POUR COMMUNICATIONS ENTRE MOBILES written by Abdelaziz Karmoudi and published by . This book was released on 1987 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: ON ETUDIE PRINCIPALEMENT LA FAISABILITE D'UNE ANTENNE ADAPTATIVE SIMPLE ET DE FAIBLE COUT UTILISEE EN COMMUNICATION MOBILE. LE PRINCIPE DE FONCTIONNEMENT CONSISTE A MINIMISER L'ECART ENTRE LE SIGNAL RECU ET UN SIGNAL DE REFERENCE LE PLUS PROCHE POSSIBLE DU SIGNAL UTILE QUE L'ON CHERCHE A RECEVOIR. LA COMMANDE DE L'ANTENNE EST REALISEE PAR MICROPROCESSEUR A PARTIR DES PRODUITS D'INTERCORRELATION ENTRE LES SIGNAUX ISSUS DE CHACUN DES ELEMENTS DE L'ANTENNE ET ENTRE CES MEMES SIGNAUX ET LE SIGNAL DE REFERENCE
Download or read book Annales des télécommunications written by and published by . This book was released on 1997 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forum written by and published by . This book was released on 1986 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book The Cell Phone written by Heather Horst and published by Berg. This book was released on 2006-10-31 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first detailed ethnography of the impact of this new technology through the exploration of the mobile phone's role in everyday life.
Book Synopsis The European Landscape Convention by : Michael Jones
Download or read book The European Landscape Convention written by Michael Jones and published by Springer Science & Business Media. This book was released on 2011-02-09 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important and insightful book provides, for the first time, a broad presentation of ongoing research into public participation in landscape conservation, management and planning, following the 2000 European Landscape Convention which came into force in 2004. The book examines both the theory of participation and what lessons can be learnt from specific European examples. It explores in what manner and to what extent the provisions for participation in the European Landscape Convention have been followed up and implemented. It also presents and compares different experiences of participation in selected countries from northern, southern, eastern and western Europe, and provides a critical examination of public participation in practice. However, while the book’s focus is necessarily on Europe, many of the conclusions drawn are of global relevance. The book provides a valuable reference for researchers and advanced students in landscape policies and management, as well as for professionals and others interested in land-use planning and environmental management.
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 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.
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)
Book Synopsis Microstrip Antenna Design for Wireless Applications by : Praveen Kumar Malik
Download or read book Microstrip Antenna Design for Wireless Applications written by Praveen Kumar Malik and published by CRC Press. This book was released on 2021-11-29 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on recent advances in the field of microstrip antenna design and its applications in various fields including space communication, mobile communication, wireless communication, medical implants and wearable applications. Scholars as well as researchers and those in the electronics/ electrical/ instrumentation engineering fields will benefit from this book. The book shall provides the necessary literature and techniques using which to assist students and researchers would design antennas for the above- mentioned applications and will ultimately enable users to take measurements in different environments. It is intended to help scholars and researchers in their studies, by enhancing their the knowledge and skills in on the latest applications of microstrip antennas in the world of communications such as world like IoT, D2D, satellites and wearable devices, to name a few. FEATURES Addresses the complete functional framework workflow in printed antenna design systems Explores the basic and high-level concepts, including advanced aspects in planer design issues, thus serving as a manual for those in the the industry while also assisting beginners Provides the latest techniques used for antennas in terms of structure, defected ground, MIMO and fractal designs Discusses case studies related to data-intensive technologies in microchip antennas in terms of the most recent applications and similar uses for the Internet of Things and device-to-device communication
Download or read book Culture: urban future written by UNESCO and published by UNESCO Publishing. This book was released on 2016-12-31 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report presents a series of analyses and recommendations for fostering the role of culture for sustainable development. Drawing on a global survey implemented with nine regional partners and insights from scholars, NGOs and urban thinkers, the report offers a global overview of urban heritage safeguarding, conservation and management, as well as the promotion of cultural and creative industries, highlighting their role as resources for sustainable urban development. Report is intended as a policy framework document to support governments in the implementation of the 2030 Agenda for Sustainable Urban Development and the New Urban Agenda.
Book Synopsis Pervasive Mobile and Ambient Wireless Communications by : Roberto Verdone
Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
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 Mutual Coupling Between Antennas by : Trevor S. Bird
Download or read book Mutual Coupling Between Antennas written by Trevor S. Bird and published by John Wiley & Sons. This book was released on 2021-06-28 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mutual Coupling Between Antennas A guide to mutual coupling between various types of antennas in arrays such as wires, apertures and microstrip patches or antennas co-sited on platforms Mutual Coupling Between Antennas explores the theoretical underpinnings of mutual coupling, offers an up-to-date description of the physical effects of mutual coupling for a variety of antennas, and contains techniques for analysing and assessing its effects. The book puts the topic in historical context, presents an integral equation approach, includes the current techniques, measurement methods, and discusses the most recent advances in the field. With contributions from noted experts on the topic, the book reviews practical aspects of mutual coupling and examines applications that clearly demonstrate where the performance is impacted both positively and negatively. Mutual Coupling Between Antennas contains information on how mutual coupling can be analysed with a wide range of methods from direct computer software using discrete methods, to integral equations and Greens function methods as well as approximate asymptotic methods. This important text: Provides a theoretical background for understanding mutual coupling between various types of antennas Describes the interaction that occurs between antennas, both planned and unplanned Explores a key aspect of arrays in any wireless, radar or sensing system operating at radio frequencies Offers a groundbreaking book on antenna mutual coupling Written for antenna engineers, technical specialists, researchers and students, Mutual Coupling Between Antennas is the first book to examine mutual coupling between various types of antennas including wires, horns, microstrip patches, MIMO antennas, co-sited antennas and arrays in planar or conformal configurations.
Book Synopsis Building Wireless Community Networks by : Rob Flickenger
Download or read book Building Wireless Community Networks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers: Selecting the appropriate equipment Finding antenna sites, and building and installing antennas Protecting your network from inappropriate access New network monitoring tools and techniques (new) Regulations affecting wireless deployment (new) IP network administration, including DNS and IP Tunneling (new) His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.
