Download or read book M thodologie de conception d ASICs mixtes avec VHDL AMS written by Jean Oudinot and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book D veloppement d une m thodologie de conception mat riel base de modules g n riques VHDL VHDL AMS en vue d une int gration de syst mes de commande lectriques written by Youssef Kebbati and published by . This book was released on 2002 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Malgré leur flexibilité et leur intérêt économique, les solutions numériques d'implantation de type logiciel ne s'imposent plus aujourd'hui comme les seuls choix de conception de commande de systèmes électriques. En effet, des solutions plus spécifiques de type matériel (PLD, ASIC) semblent mieux répondre aux contraintes technologiques actuelles ou à venir. Toutefois, malgré l'avènement d'outils et de langages CAO performants, ces solutions restent encore trop coûteuses et complexes à mettre en œuvre. L'objectif de cette thèse est d'offrir aux concepteurs de systèmes électriques une approche de description architecturale adaptée aux contraintes d'implantation sur cible matériel. C'est dans ce sens qu'une méthode basée sur les principes de la conception modulaire et d'Adéquation Algorithme Architecture (A3 ou AAA), et sur l'élaboration d'une bibliothèque de modules spécifiques, a pu être développée et appliquée à différents cas de commande. Ainsi, l'architecture de la commande directe du couple d'un moteur asynchrone a pu être établie en suivant cette méthode et son efficacité validée en comparant ses performances d'implantation à des approches plus classiques de conception. Par la suite, le cas d'une commande de vitesse " sans capteurs " d'un moteur à réluctance variable et celui d'un dispositif d'électronique de puissance ont également pu montrer l'efficacité de la méthode proposée. A partir de ce dernier cas de conception, une méthodologie globale du mode de conception modulaire a finalement pu être élaborée en développant une bibliothèque de modèles comportementaux de la commande et du système électrique associé. Ces modèles ont été décrits en langages VHDL et VHDL-AMS de manière à respecter la mixité (numérique et analogique) des éléments qui composent le système électrique. Cette approche permet aussi de prévenir le cas d'une intégration mixte du système, ouvrant par la même de larges perspectives de conception dans ce domaine d'application.

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)

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.

Download or read book Handbook of Aerospace Electromagnetic Compatibility written by Dr. Reinaldo J. Perez and published by John Wiley & Sons. This book was released on 2018-11-30 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource that explores electromagnetic compatibility (EMC) for aerospace systems Handbook of Aerospace Electromagnetic Compatibility is a groundbreaking book on EMC for aerospace systems that addresses both aircraft and space vehicles. With contributions from an international panel of aerospace EMC experts, this important text deals with the testing of spacecraft components and subsystems, analysis of crosstalk and field coupling, aircraft communication systems, and much more. The text also includes information on lightning effects and testing, as well as guidance on design principles and techniques for lightning protection. The book offers an introduction to E3 models and techniques in aerospace systems and explores EMP effects on and technology for aerospace systems. Filled with the most up-to-date information, illustrative examples, descriptive figures, and helpful scenarios, Handbook of Aerospace Electromagnetic Compatibility is designed to be a practical information source. This vital guide to electromagnetic compatibility: • Provides information on a range of topics including grounding, coupling, test procedures, standards, and requirements • Offers discussions on standards for aerospace applications • Addresses aerospace EMC through the use of testing and theoretical approaches Written for EMC engineers and practitioners, Handbook of Aerospace Electromagnetic Compatibility is a critical text for understanding EMC for aerospace systems.

Download or read book Engineering Acoustics written by Michael Möser and published by Springer Science & Business Media. This book was released on 2009-09-01 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suitable for both individual and group learning, Engineering Acoustics focuses on basic concepts and methods to make our environments quieter, both in buildings and in the open air. The author’s tutorial style derives from the conviction that understanding is enhanced when the necessity behind the particular teaching approach is made clear. He also combines mathematical derivations and formulas with extensive explanations and examples to deepen comprehension. Fundamental chapters on the physics and perception of sound precede those on noise reduction (elastic isolation) methods. The last chapter deals with microphones and loudspeakers. Moeser includes major discoveries by Lothar Cremer, including the optimum impedance for mufflers and the coincidence effect behind structural acoustic transmission. The appendix gives a short introduction on the use of complex amplitudes in acoustics.