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Conception Et Realisation De Reseaux Dantennes Imprimees Mono Et Multifaisceaux
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Book Synopsis CONCEPTION ET REALISATION DE RESEAUX D'ANTENNES IMPRIMEES MONO ET MULTIFAISCEAUX by : EDUARDO.. MOTTA CRUZ
Download or read book CONCEPTION ET REALISATION DE RESEAUX D'ANTENNES IMPRIMEES MONO ET MULTIFAISCEAUX written by EDUARDO.. MOTTA CRUZ and published by . This book was released on 1992 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: SI EN GENERAL LES SYSTEMES DE TELECOMMUNICATIONS DEMANDENT DES BANDES PASSANTES RELATIVEMENT LARGES ET DES GAINS D'ANTENNES IMPORTANTS, D'AUTRES SYSTEMES APPARAISSENT AUJOURD'HUI PEU EXIGEANTS SUR CES ASPECTS, ALORS QUE LE COUT, LA SIMPLICITE DE FABRICATION ET LES CONTRAINTES AU NIVEAU DES DIAGRAMMES DE RAYONNEMENT RESTENT LES POINTS CLES, SUGGERANT L'EXPLOITATION DE LA TECHNOLOGIE IMPRIMEE. LE PRINCIPAL OBJECTIF DE CE TRAVAIL A ETE LA CONCEPTION ET LA REALISATION DE RESEAUX D'ANTENNES IMPRIMEES MICROONDES A DIAGRAMMES DE RAYONNEMENT EXOTIQUES A PLUSIEURS FAISCEAUX OU A UN SEUL FAISCEAU OBLIQUE A PARTIR DE DISPOSITIONS ORIGINALES DE L'ELEMENT RAYONNANT OU D'ASSOCIATION DE CES ELEMENTS. UNE ANALYSE THEORIQUE DE LA PASTILLE CARREE ALIMENTEE EN COIN EST D'ABORD COMPLETEE PAR UNE DEMARCHE EXPERIMENTALE. LA CONCEPTION DE RESEAUX A PLUSIEURS FAISCEAUX FAIT ENSUITE APPEL A UNE TECHNIQUE DE SYNTHESE, UTILISANT LA METHODE DE RELAXATION. OUTRE L'USAGE D'UNE METHODE DE SYNTHESE APPROPRIEE, LE CHOIX JUDICIEUX DES POSITIONS DES SOURCES RESTE FONDAMENTAL ET DU RESSORT DU CONCEPTEUR, Y COMPRIS LA PRISE EN COMPTE DU SYSTEME D'ALIMENTATION, IMPRIME SUR LE MEME SUBSTRAT. CES ASPECTS, AINSI QUE LE DEVELOPPEMENT DE NOUVELLES IDEES D'ASSOCIATION DE SOURCES PAR BLOCS ET D'ASSOCIATION DE RESEAUX LINEAIRES, A PERMIS DE MAITRISER PLUSIEURS FONCTIONS DE RAYONNEMENT IMPORTANTES: VARIATION DE L'ANGLE DE DEPOINTAGE DES LOBES PRINCIPAUX, REDUCTION DU NIVEAU DES LOBES SECONDAIRES, CREATION DE RESEAUX A FAISCEAUX MULTIPLES, SUPPRESSION DE CERTAINS LOBES DE RESEAU ET COMPENSATION D'AUTRES. GLOBALEMENT, GRACE A LA REALISATION ET AU TEST DE 22 RESEAUX D'ANTENNES DANS TROIS BANDES DE FREQUENCE (BANDES X, K ET KA) ON VERIFIE LA VALIDITE DES STRATEGIES DE CONCEPTION PROPOSEES INITIALEMENT. LES RESULTATS OBTENUS ONT PERMIS LE DEPOT D'UN BREVET D'INVENTION ET LA REALISATION DE SEPT PUBLICATIONS SCIENTIFIQUES NATIONALES ET INTERNATIONALES
Book Synopsis 1000 Doctoral Theses by Mozambicans or about Mozambique by : Paulus Gerdes
Download or read book 1000 Doctoral Theses by Mozambicans or about Mozambique written by Paulus Gerdes and published by Lulu.com. This book was released on 2013 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: The books presents in historical order information (author, year, title, university, country) about 535 doctoral theses written by Mozambicans and about 544 doctoral theses about Mozambique written by foreigners. Universities of 33 countries have awarded these doctoral degrees. Includes alphabetic and thematic indices, and various tables (2013, 236 pp.)
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 Frequency Independent Antennas by : Victor H. Rumsey
Download or read book Frequency Independent Antennas written by Victor H. Rumsey and published by Academic Press. This book was released on 2014-06-28 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Frequency Independent Antennas provides a reasonably complete coverage of frequency independent antennas from its inception until the middle of 1965. Most of the contents have not previously been published, except in scattered journal articles, and some are original. The first six chapters are written at a fairly easy level—about the level of a beginning graduate student or the more advanced undergraduate. The last two chapters, which deal with solutions of Maxwell's equations, are at a somewhat higher level. The book opens with a discussion of some fundamental ideas about antennas. It shows how typical measurements can be understood in terms of classical electromagnetic theory: in other words, how to make sense of measured data, how to set up apparatus to get meaningful data, and how to test their significance. Separate chapters follow on the features of frequency independent, plane-sheet, spiral, and log-periodic antennas. Subsequent chapters discuss how the periodic structure theory provides a way of understanding the peculiarities of frequency independent antennas; and solutions of Maxwell's equations for idealized spiral and idealized sinusoidal structures.
Book Synopsis Finite Antenna Arrays and FSS by : Ben A. Munk
Download or read book Finite Antenna Arrays and FSS written by Ben A. Munk and published by John Wiley & Sons. This book was released on 2003-07-22 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: A periodic surface is an assembly of identical elements arranged in a one or two-dimensional array. Such surfaces have various effects on incident electromagnetic waves. Their applications range from antennas to stealth aircraft.This book discusses finite antenna arrays and how to minimize the radar cross section of these arrays. "Ben has been the world-wide guru of this technology...Ben Munk has written a book that represents the epitomy of practical understanding." W. Bahret, United States Air Force Frequency selective surfaces (FSSs) have important military and civilian applications including antenna theory, satellite communications and stealth technology Author is an authory on the subject, having been instrumental in the development of stealth technology for the US Air Force Much of the material in this book was deemed classified due to its importance to defence
Book Synopsis African Doctorates in Mathematics by :
Download or read book African Doctorates in Mathematics written by and published by Lulu.com. This book was released on 2007 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a catalogue of over 2000 doctoral theses by Africans in all fields of mathematics, including applied mathematics, mathematics education and history of mathematics. The introduction contains information about distribution by country, institutions, period, and by gender, about mathematical density, and mobility of mathematicians. Several appendices are included (female doctorate holders, doctorates in mathematics education, doctorates awarded by African universities to non-Africans, doctoral theses by non-Africans about mathematics in Africa, activities of African mathematicians at the service of their communities). Paulus Gerdes compiled the information in his capacity of Chairman of the African Mathematical Union Commission for the History of Mathematics in Africa (AMUCHMA). The book contains a preface by Mohamed Hassan, President of the African Academy of Sciences (AAS) and Executive Director of the Academy of Sciences for the Developing World (TWAS). (383 pp.)
Download or read book Sipatsi written by Paulus Gerdes and published by . This book was released on 1994 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-Complementary Antennas by : Yasuto Mushiake
Download or read book Self-Complementary Antennas written by Yasuto Mushiake and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: An antenna with a self-complementary structure has a constant input impedance, independent of the source frequency and of the shape of the structure. The principle for this property of constant impedance was discovered by Professor Mushiake himself. This is the first study which comprehensively describes the principles of self-complementarity in antennas. It explains the theory which was the basis of the development of this principle and presents various engineering applications with an emphasis on extremely broadband self-complementary antennas. Self-Complementary Antennas will be of particular interest to antenna engineers working with extremely large bandwidths and more generally to electrical engineers with an interest in the development of the field since 1948.
Book Synopsis Performance of the System of Rice Intensification (SRI) on Salt-affected Soils in Southern Mozambique by : Maria Zélia Lopes Menete
Download or read book Performance of the System of Rice Intensification (SRI) on Salt-affected Soils in Southern Mozambique written by Maria Zélia Lopes Menete and published by . This book was released on 2005 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Land Policy and Poverty Reduction in Mozambique by : Ragendra Berta De Sousa
Download or read book Land Policy and Poverty Reduction in Mozambique written by Ragendra Berta De Sousa and published by . This book was released on 2003 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultra-wideband, Short-pulse Electromagnetics by : Henry L. Bertoni
Download or read book Ultra-wideband, Short-pulse Electromagnetics written by Henry L. Bertoni and published by Springer Science & Business Media. This book was released on 1993 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of an international conference held October 1992, at the Microwave Research Institute, Brooklyn, New York. The conference topic was chosen because of the steadily increasing importance of time domain techniques and applications, and also because of the general trend toward wider signal b
Book Synopsis The Taming of Fate by : Macamo, Elisio S.
Download or read book The Taming of Fate written by Macamo, Elisio S. and published by CODESRIA. This book was released on 2017-07-05 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about how extreme situations appearing to have a destructive potential can actually be used to produce meaningful individual and social lives. It is about the “taming of fate”. This notion means and accounts for the ability of individuals and communities to rebuild their lives against all odds. The book is based on case-studies that draw from theoretical insights derived from the sociology of disasters. It addresses some limitations of the sociology of risk, chief among which is the rejection of the relevance of the notion of risk to the study of technologically non-advanced societies. The book argues that this rejection has deprived the study of the human condition of an important analytical asset. The book claims that risk is a property of social action which can best be understood through the analytical scrutiny of its role in the historical constitution of social relations.
Book Synopsis Protestant Churches and the Formation of Political Consciousness in Southern Mozambique (1930-1974) by : Teresa Cruz e Silva
Download or read book Protestant Churches and the Formation of Political Consciousness in Southern Mozambique (1930-1974) written by Teresa Cruz e Silva and published by . This book was released on 2001 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Verbs of Motion in Changana by : Bento Sitoe
Download or read book Verbs of Motion in Changana written by Bento Sitoe and published by . This book was released on 2001 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Resistance and Transformation by : Michael Cross
Download or read book Resistance and Transformation written by Michael Cross and published by . This book was released on 1992 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mineralogy and Geochemistry of Bauxite and Bentonite Deposits from Mozambique by : Amadeu Carlos dos Muchangos
Download or read book Mineralogy and Geochemistry of Bauxite and Bentonite Deposits from Mozambique written by Amadeu Carlos dos Muchangos and published by . This book was released on 2000 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Privileged Places in South Central Mozambique by : Solange Macamo
Download or read book Privileged Places in South Central Mozambique written by Solange Macamo and published by . This book was released on 2006 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
