Field Computation by Moment Methods

Author: Roger F. Harrington
Publisher: Oxford University Press, USA
ISBN: 9780198592174
Format: PDF, ePub, Docs
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This classic 1968 edition of Field Computation by Moment Methods is the first book to explore the computation of electromagnetic fields by the method of moments--the most popular method for the numerical solution of electromagnetic field problems. It presents a unified approach to moment methods by employing the concepts of linear spaces and functional analysis. Written especially for those who have a minimal amount of experience in electromagnetic theory, theoretical and mathematical are illustrated by examples that prepare all readers with the skills they need to apply the method of moments to new, engineering-related problems.

Electromagnetic Field Computation by Network Methods

Author: Leopold B. Felsen
Publisher: Springer Science & Business Media
ISBN: 3540939466
Format: PDF, ePub
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In this monograph, the authors propose a systematic and rigorous treatment of electromagnetic field representations in complex structures. The architecture suggested in this book accommodates use of different numerical methods as well as alternative Green's function representations in each of the subdomains resulting from a partitioning of the overall problem. The subdomains are regions of space where electromagnetic energy is stored and are described in terms of equivalent circuit representations based either on lumped element circuits or on transmission lines. Connection networks connect the subcircuits representing the subdomains. The connection networks are lossless, don't store energy and represent the overall problem topology. This is similar to what is done in circuit theory and permits a phrasing of the solution of EM field problems in complex structures by Network-oriented methods.

The Method of Moments in Electromagnetics

Author: Walton C. Gibson
Publisher: CRC Press
ISBN: 9781420061468
Format: PDF, Mobi
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Responding to the need for a clear, up-to-date introduction to the field, The Method of Moments in Electromagnetics explores surface integral equations in electromagnetics and presents their numerical solution using the method of moments (MOM) technique. It provides the numerical implementation aspects at a nuts-and-bolts level while discussing integral equations and electromagnetic theory at a higher level. The author covers a range of topics in this area, from the initial underpinnings of the MOM to its current applications. He first reviews the frequency-domain electromagnetic theory and then develops Green’s functions and integral equations of radiation and scattering. Subsequent chapters solve these integral equations for thin wires, bodies of revolution, and two- and three-dimensional problems. The final chapters examine the contemporary fast multipole method and describe some commonly used methods of numerical integration, including the trapezoidal rule, Simpson’s rule, area coordinates, and Gaussian quadrature on triangles. The text derives or summarizes the matrix elements used in every MOM problem and explains the approach used in and results of each example. This book provides both the information needed to solve practical electromagnetic problems using the MOM and the knowledge necessary to understand more advanced topics in the field.

Numerische Methoden in der Berechnung elektromagnetischer Felder

Author: Arnulf Kost
Publisher: Springer-Verlag
ISBN: 3642579108
Format: PDF, Mobi
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Die Konstruktion von elektrotechnischen Bauelementen, Baugruppen und Anlagen ist ohne die numerische Feldberechnung nicht mehr denkbar. Da es keine für alle Problemstellungen gleichermaßen geeignete Methode gibt, werden die wichtigsten numerischen Methoden vergleichend behandelt und ihre gemeinsamen Wurzeln sichtbar gemacht. Besonders eingegangen wird dabei auf die Methode der Finiten Elemente (FEM), die Boundary Element Methode (BEM) und die aus beiden bestehende Kopplungsmethode (BEM/FEM). Anhand praktischer Beispiele aus Energie- und Nachrichtentechnik, der Mikroelektronik und der elektromagnetischen Verträglicheit werden gleichzeitig die durch die Methoden bedingten besonderen Erfordernisse (z.B. Fehlerschätzung, Adaptive Netzgenerierung etc.) erörtert.

Theory and Computation of Electromagnetic Fields

Author: Jian-Ming Jin
Publisher: John Wiley & Sons
ISBN: 1119108098
Format: PDF, Docs
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Reviews the fundamental concepts behind the theory and computation of electromagnetic fields The book is divided in two parts. The first part covers both fundamental theories (such as vector analysis, Maxwell’s equations, boundary condition, and transmission line theory) and advanced topics (such as wave transformation, addition theorems, and fields in layered media) in order to benefit students at all levels. The second part of the book covers the major computational methods for numerical analysis of electromagnetic fields for engineering applications. These methods include the three fundamental approaches for numerical analysis of electromagnetic fields: the finite difference method (the finite difference time-domain method in particular), the finite element method, and the integral equation-based moment method. The second part also examines fast algorithms for solving integral equations and hybrid techniques that combine different numerical methods to seek more efficient solutions of complicated electromagnetic problems. Theory and Computation of Electromagnetic Fields, Second Edition: Provides the foundation necessary for graduate students to learn and understand more advanced topics Discusses electromagnetic analysis in rectangular, cylindrical and spherical coordinates Covers computational electromagnetics in both frequency and time domains Includes new and updated homework problems and examples Theory and Computation of Electromagnetic Fields, Second Edition is written for advanced undergraduate and graduate level electrical engineering students. This book can also be used as a reference for professional engineers interested in learning about analysis and computation skills.

Microstrip Antenna Design Handbook

Author: Ramesh Garg
Publisher: Artech House
ISBN: 9780890065136
Format: PDF, Kindle
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Based on Bahl and Bhartia's popular 1980 classic, Microstrip Antennas, this all new book provides the detail antenna engineers and designers need to design any type of microstrip antenna. After addressing essential microchip antenna theory, the authors highlight current design and engineering practices, emphasizing the most pressing issues in this area, including broadbanding, circular polarization, and active microstrip antennas in particular. Special design challenges, ranging from dual polarization, high bandwidth, and surface wave mitigation, to choosing the proper substrate, and shaping an antenna to achieve desired results are all covered.

Analytical and Computational Methods in Electromagnetics

Author: Ramesh Garg
Publisher: Artech House
ISBN: 1596933860
Format: PDF, ePub, Docs
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Achieve optimal microwave system performance by mastering the principles and methods underlying today's powerful computational tools and commercial software in electromagnetics. This authoritative resource offers you clear and complete explanation of this essential electromagnetics knowledge, providing you with the analytical background you need to understand such key approaches as MoM (method of moments), FDTD (Finite Difference Time Domain) and FEM (Finite Element Method), and Green's functions. This comprehensive book includes all math necessary to master the material. Moreover, it features numerous solved problems that help ensure your understanding of key concepts throughout the book.

Numerical Computation of Electric and Magnetic Fields

Author: Charles W. Steele
Publisher: Springer Science & Business Media
ISBN: 9401571430
Format: PDF, Mobi
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For well over a decade, the numerical approach to field computation has been gaining progressively greater importance. Analytical methods offield compu tation are, at best, unable to accommodate the very wide variety of configura tions in which fields must be computed. On the other hand, numerical methods can accommodate many practical configurations that analytical methods cannot. With the advent of high-speed digital computers, numerical field computations have finally become practical. However, in order to implement numerical methods of field computation, we need algorithms, numerical methods, and mathematical tools that are largely quite different from those that have been traditionally used with analytical methods. Many of these algorithms have, in fact, been presented in the large number of papers that have been published on this subject in the last two decades. And to some of those who are already experienced in the art of numerical field computations, these papers, in addition to their own original work, are enough to give them the knowledge that they need to perform practical numerical field computations.