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Contribution A Letude Des Antennes Miniatures Directives Ou Large Bande Avec Des Circuits Non Foster
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Book Synopsis Contribution À L'étude Des Antennes Miniatures Directives Ou Large-bande Avec Des Circuits Non-Foster by : Abdullah Haskou
Download or read book Contribution À L'étude Des Antennes Miniatures Directives Ou Large-bande Avec Des Circuits Non-Foster written by Abdullah Haskou and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: For supporting different wireless technologies, mobile terminals require significant miniaturization of antennas. However, antennas performance has some fundamental limits related to their physical dimensions. The available theory shows that superdirective arrays can exceed Harrington's limit on antenna directivity and non-Foter matched antennas can surpass Bode-Fano limit on antenna bandwidth. Therefore, this work focuses on the design of superdirective antenna arrays and non-Foster matched antennas as possible solutions for improving the performance of Electrically Small Antennas (ESAs). In the first part: a Negative Impedance Converter (NIC) is designed to have a very small negative capacitor. The circuit is evaluated in terms of gain, stability and linearity. Then, the circuit is used to match several small antennas in the UHF band. In the second part: the theoretical limits of superdirective antenna arrays are studied. A simple and practical approach to design parasitic antenna arrays is proposed. The integration of superdirective ESAs in Printed Circuit Boards (PCBs) is studied and the difficulties of measuring this type of antennasare evaluated. A new strategy for the design of 3D or planar compact arrays, with linear or circular-polarization, using superdirective elements is presented.
Book Synopsis Ultra-wideband Indoor Communications Using Optical Technology by : Mehrdad Mirshafiei
Download or read book Ultra-wideband Indoor Communications Using Optical Technology written by Mehrdad Mirshafiei and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Seteney Shami Publisher :A Columbia / SSRC Book (Privatization of Risk) ISBN 13 :9780979077258 Total Pages :0 pages Book Rating :4.0/5 (772 download)
Book Synopsis Publics, Politics and Participation by : Seteney Shami
Download or read book Publics, Politics and Participation written by Seteney Shami and published by A Columbia / SSRC Book (Privatization of Risk). This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Though it is rarely explicitly articulated, many believe that there is no "public" in the Middle East. Scholarship on the Middle East and North Africa almost always engages with politics-a prominent focus of this region-yet the assumed absence of public spaces and fora has led many to think that debate, consensus, and concerted social action are antithetical to the cultural, religious, and national heritage of the region. It is a mistake to exclude the public dimension from the study of processes in this region. Recent studies have demonstrated not only the critical importance of the public in everyday practices of the MENA region, but they have also shown how the term and notion of the public sphere can be used productively to advance understandings of collective life. The first section of this volume offers alternative conceptions of the public sphere through rich and innovative theoretical analysis. Philosophical investigations focus on the role of collective action, the relationship between nationalism and democracy, and the notions of the public employed by socioreligious movements. The second section addresses a wide range of counter-hegemonic discourses and practices that enable the public sphere, such as memoirs, testimonies, strategies of surveillance, the Tehran bazaar, and the movements of migratory workers. The third section provides empirical accounts of the way in which mutual communication through technology has vitally expanded the notion of the public in the MENA region. In conclusion, conflict and resistance are shown to be generative forces in public discourse and debate and in the production of national publics.
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 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 Radio Wave Propagation by : Lucien Boithias
Download or read book Radio Wave Propagation written by Lucien Boithias and published by McGraw-Hill Companies. This book was released on 1987 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering written by Unesco and published by UNESCO. This book was released on 2010-01-01 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews engineering's importance to human, economic, social and cultural development and in addressing the UN Millennium Development Goals. Engineering tends to be viewed as a national issue, but engineering knowledge, companies, conferences and journals, all demonstrate that it is as international as science. The report reviews the role of engineering in development, and covers issues including poverty reduction, sustainable development, climate change mitigation and adaptation. It presents the various fields of engineering around the world and is intended to identify issues and challenges facing engineering, promote better understanding of engineering and its role, and highlight ways of making engineering more attractive to young people, especially women.--Publisher's description.
Book Synopsis Planar Antennas by : Praveen Kumar Malik
Download or read book Planar Antennas written by Praveen Kumar Malik and published by CRC Press. This book was released on 2021-10-21 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference text discusses fundamental concepts, applications, design techniques, and challenges in the field of planar antennas. The text focuses on recent advances in the field of planar antenna design and their applications in various fields of research, including space communication, mobile communication, wireless communication, and wearable applications. This resource presents planar antenna design concepts, methods, and techniques to enhance the performance parameters and applications for IoTs and device-to-device communication. The latest techniques used in antenna design, including their structures defected ground, MIMO, and fractal design, are discussed comprehensively. The text will be useful for senior undergraduate students, graduate students, and academic researchers in fields including electrical engineering, electronics, and communication engineering.
Book Synopsis Engineering Acoustics by : Michael Möser
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.
Book Synopsis Historical Modules for the Teaching and Learning of Mathematics by : Victor J. Katz
Download or read book Historical Modules for the Teaching and Learning of Mathematics written by Victor J. Katz and published by American Mathematical Soc.. This book was released on 2020-03-02 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Francophone Postcolonial Studies by :
Download or read book Francophone Postcolonial Studies written by and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Book Synopsis Governance, Regulation and Powers on the Internet by : Eric Brousseau
Download or read book Governance, Regulation and Powers on the Internet written by Eric Brousseau and published by Cambridge University Press. This book was released on 2012-04-23 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary survey of the issues surrounding the governance of the Internet.
Book Synopsis Recommendations and Reports of the CCIR, 1978: Spectrum utilization and monitoring by : International Radio Consultative Committee
Download or read book Recommendations and Reports of the CCIR, 1978: Spectrum utilization and monitoring written by International Radio Consultative Committee and published by . This book was released on 1978 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Goa and Portugal by : Charles J. Borges
Download or read book Goa and Portugal written by Charles J. Borges and published by Concept Publishing Company. This book was released on 1997 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of twenty-one papers presented at an international symposium on the theme "cultural relations between Portugal and Goa" at the University of Cologne, 29 May-2 June 1996; chiefly covers the 16th-18th centuries.
Book Synopsis Tropical Agriculturist and Magazine of the Ceylon Agricultural Society by :
Download or read book Tropical Agriculturist and Magazine of the Ceylon Agricultural Society written by and published by . This book was released on 1988 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
