Asymptotic Waveform Evaluation (Awe) Technique for Frequency Domain Electromagnetic Analysis

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781725171350
Total Pages : 30 pages
Book Rating : 4.1/5 (713 download)

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Book Synopsis Asymptotic Waveform Evaluation (Awe) Technique for Frequency Domain Electromagnetic Analysis by : National Aeronautics and Space Administration (NASA)

Download or read book Asymptotic Waveform Evaluation (Awe) Technique for Frequency Domain Electromagnetic Analysis written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Asymptotic Waveform Evaluation (AWE) technique is applied to a generalized frequency domain electromagnetic problem. Most of the frequency domain techniques in computational electromagnetics result in a matrix equation, which is solved at a single frequency. In the AWE technique, the Taylor series expansion around that frequency is applied to the matrix equation. The coefficients of the Taylor's series are obtained in terms of the frequency derivatives of the matrices evaluated at the expansion frequency. The coefficients hence obtained will be used to predict the frequency response of the system over a frequency range. The detailed derivation of the coefficients (called 'moments') is given along with an illustration for electric field integral equation (or Method of Moments) technique. The radar cross section (RCS) frequency response of a square plate is presented using the AWE technique and is compared with the exact solution at various frequencies. Cockrell, C. R. and Beck, F. B. Langley Research Center NASA-TM-110292, NAS 1.15:110292 RTOP 522-33-11-02...

Asymptotic Waveform Evaluation (AWE) Technique for Frequency Domain Electromagnetic Analysis

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Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Asymptotic Waveform Evaluation (AWE) Technique for Frequency Domain Electromagnetic Analysis by :

Download or read book Asymptotic Waveform Evaluation (AWE) Technique for Frequency Domain Electromagnetic Analysis written by and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Computational Electromagnetics and Its Applications

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Publisher : Springer Science & Business Media
ISBN 13 : 9401155844
Total Pages : 328 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Computational Electromagnetics and Its Applications by : Thomas G. Campbell

Download or read book Computational Electromagnetics and Its Applications written by Thomas G. Campbell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the first ICASE/LaRC Work shop on Computational Electromagnetics and Its Applications conducted by the Institute for Computer Applications in Science and Engineering and NASA Langley Research Center. We had several goals in mind when we decided, jointly with the Elec tromagnetics Research Branch, to organize this workshop on Computa tional Electromagnetics ( CEM). Among our goals were a desire to obtain an overview of the current state of CEM, covering both algorithms and ap plications and their effect on NASA's activities in this area. In addition, we wanted to provide an attractive setting for computational scientists with expertise in other fields, especially computational fluid dynamics (CFD), to observe the algorithms and tools of CEM at work. Our expectation was that scientists from both fields would discover mutually beneficial inter connections and relationships. Another goal was to learn of progress in solution algorithms for electromagnetic optimization and design problems; such problems make extensive use of field solvers and computational effi ciency is at a premium. To achieve these goals we assembled the renowned group of speakers from academia and industry whose talks are contained in this volume. The papers are printed in the same order in which the talks were pre sented at the meeting. The first paper is an overview of work currently being performed in the Electromagnetic Research Branch at the Langley Research Center.

NASA Technical Memorandum

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Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis NASA Technical Memorandum by :

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proceedings

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Publisher : Margret Schneider
ISBN 13 : 3800728281
Total Pages : 598 pages
Book Rating : 4.8/5 (7 download)

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Book Synopsis Proceedings by :

Download or read book Proceedings written by and published by Margret Schneider. This book was released on 2004 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Scientific Computing in Electrical Engineering

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Publisher : Springer Science & Business Media
ISBN 13 : 3540328629
Total Pages : 460 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Scientific Computing in Electrical Engineering by : Angelo Marcello Anile

Download or read book Scientific Computing in Electrical Engineering written by Angelo Marcello Anile and published by Springer Science & Business Media. This book was released on 2007-01-10 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of papers presented at the last Scientific Computing in Electrical Engineering (SCEE) Conference, held in Sicily, in 2004. The series of SCEE conferences aims at addressing mathematical problems which have a relevancy to industry. The areas covered at SCEE-2004 were: Electromagnetism, Circuit Simulation, Coupled Problems and General mathematical and computational methods.

Multigrid Finite Element Methods for Electromagnetic Field Modeling

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Publisher : John Wiley & Sons
ISBN 13 : 0471741108
Total Pages : 453 pages
Book Rating : 4.4/5 (717 download)

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Book Synopsis Multigrid Finite Element Methods for Electromagnetic Field Modeling by : Yu Zhu

Download or read book Multigrid Finite Element Methods for Electromagnetic Field Modeling written by Yu Zhu and published by John Wiley & Sons. This book was released on 2006-02-03 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first comprehensive monograph that features state-of-the-art multigrid methods for enhancing the modeling versatility, numerical robustness, and computational efficiency of one of the most popular classes of numerical electromagnetic field modeling methods: the method of finite elements. The focus of the publication is the development of robust preconditioners for the iterative solution of electromagnetic field boundary value problems (BVPs) discretized by means of finite methods. Specifically, the authors set forth their own successful attempts to utilize concepts from multigrid and multilevel methods for the effective preconditioning of matrices resulting from the approximation of electromagnetic BVPs using finite methods. Following the authors' careful explanations and step-by-step instruction, readers can duplicate the authors' results and take advantage of today's state-of-the-art multigrid/multilevel preconditioners for finite element-based iterative electromagnetic field solvers. Among the highlights of coverage are: * Application of multigrid, multilevel, and hybrid multigrid/multilevel preconditioners to electromagnetic scattering and radiation problems * Broadband, robust numerical modeling of passive microwave components and circuits * Robust, finite element-based modal analysis of electromagnetic waveguides and cavities * Application of Krylov subspace-based methodologies for reduced-order macromodeling of electromagnetic devices and systems * Finite element modeling of electromagnetic waves in periodic structures The authors provide more than thirty detailed algorithms alongside pseudo-codes to assist readers with practical computer implementation. In addition, each chapter includes an applications section with helpful numerical examples that validate the authors' methodologies and demonstrate their computational efficiency and robustness. This groundbreaking book, with its coverage of an exciting new enabling computer-aided design technology, is an essential reference for computer programmers, designers, and engineers, as well as graduate students in engineering and applied physics.

The Finite Element Method in Electromagnetics

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Publisher : John Wiley & Sons
ISBN 13 : 1118842022
Total Pages : 800 pages
Book Rating : 4.1/5 (188 download)

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Book Synopsis The Finite Element Method in Electromagnetics by : Jian-Ming Jin

Download or read book The Finite Element Method in Electromagnetics written by Jian-Ming Jin and published by John Wiley & Sons. This book was released on 2015-02-18 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new edition of the leading textbook on the finite element method, incorporating major advancements and further applications in the field of electromagnetics The finite element method (FEM) is a powerful simulation technique used to solve boundary-value problems in a variety of engineering circumstances. It has been widely used for analysis of electromagnetic fields in antennas, radar scattering, RF and microwave engineering, high-speed/high-frequency circuits, wireless communication, electromagnetic compatibility, photonics, remote sensing, biomedical engineering, and space exploration. The Finite Element Method in Electromagnetics, Third Edition explains the method’s processes and techniques in careful, meticulous prose and covers not only essential finite element method theory, but also its latest developments and applications—giving engineers a methodical way to quickly master this very powerful numerical technique for solving practical, often complicated, electromagnetic problems. Featuring over thirty percent new material, the third edition of this essential and comprehensive text now includes: A wider range of applications, including antennas, phased arrays, electric machines, high-frequency circuits, and crystal photonics The finite element analysis of wave propagation, scattering, and radiation in periodic structures The time-domain finite element method for analysis of wideband antennas and transient electromagnetic phenomena Novel domain decomposition techniques for parallel computation and efficient simulation of large-scale problems, such as phased-array antennas and photonic crystals Along with a great many examples, The Finite Element Method in Electromagnetics is an ideal book for engineering students as well as for professionals in the field.

Asymptotic Waveform Evaluation

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Publisher : Springer
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Asymptotic Waveform Evaluation by : Eli Chiprout

Download or read book Asymptotic Waveform Evaluation written by Eli Chiprout and published by Springer. This book was released on 1994 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intense drive for signal integrity has been at the forefront of rapid and new developments in CAD algorithms. With increasing demands for high signal speeds coupled with a decrease in feature size, interconnect effects such as signal delay, distortion and crosstalk become the dominant factor limiting overall performance of VLSI systems. Although SPICE is used on a daily basis by many engineers for analog simulation and general circuit analysis, current versions of SPICE do not handle adequately the new emerging challenges of interconnect effects. Moment-matching techniques, such as asymptotic waveform evaluation, have recently proven useful in the analysis of large interconnect structures containing elements such as lossy coupled transmission lines with linear or nonlinear terminations. At a CPU cost of a little more than one DC analysis, these techniques are 2--3 orders of magnitude faster than full simulation techniques such as FFT. Asymptotic Waveform Evaluation presents an overview of the diverse algorithms and applications of moment matching techniques. The material is presented systematically and is supported by many examples. Issues such as sensitivity analysis and three-dimensional analysis are also covered. Asymptotic Waveform Evaluation will be of interest to engineers, students and researchers involved in the development and study of circuit simulation as well as interconnect analysis. It will also interest design engineers who are involved in dealing with high-speed issues, and graduate students who are active in the development of CAD tools for electronic systems.

Adaptive Mesh Refinement in Time-Domain Numerical Electromagnetics

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Publisher : Springer Nature
ISBN 13 : 3031016955
Total Pages : 135 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Adaptive Mesh Refinement in Time-Domain Numerical Electromagnetics by : Costas Sarris

Download or read book Adaptive Mesh Refinement in Time-Domain Numerical Electromagnetics written by Costas Sarris and published by Springer Nature. This book was released on 2022-05-31 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is a comprehensive presentation of state-of-the-art methodologies that can dramatically enhance the efficiency of the finite-difference time-domain (FDTD) technique, the most popular electromagnetic field solver of the time-domain form of Maxwell's equations. These methodologies are aimed at optimally tailoring the computational resources needed for the wideband simulation of microwave and optical structures to their geometry, as well as the nature of the field solutions they support. That is achieved by the development of robust “adaptive meshing” approaches, which amount to varying the total number of unknown field quantities in the course of the simulation to adapt to temporally or spatially localized field features. While mesh adaptation is an extremely desirable FDTD feature, known to reduce simulation times by orders of magnitude, it is not always robust. The specific techniques presented in this book are characterized by stability and robustness. Therefore, they are excellent computer analysis and design (CAD) tools. The book starts by introducing the FDTD technique, along with challenges related to its application to the analysis of real-life microwave and optical structures. It then proceeds to developing an adaptive mesh refinement method based on the use of multiresolution analysis and, more specifically, the Haar wavelet basis. Furthermore, a new method to embed a moving adaptive mesh in FDTD, the dynamically adaptive mesh refinement (AMR) FDTD technique, is introduced and explained in detail. To highlight the properties of the theoretical tools developed in the text, a number of applications are presented, including: Microwave integrated circuits (microstrip filters, couplers, spiral inductors, cavities). Optical power splitters, Y-junctions, and couplers Optical ring resonators Nonlinear optical waveguides. Building on first principles of time-domain electromagnetic simulations, this book presents advanced concepts and cutting-edge modeling techniques in an intuitive way for programmers, engineers, and graduate students. It is designed to provide a solid reference for highly efficient time-domain solvers, employed in a wide range of exciting applications in microwave/millimeter-wave and optical engineering.

Application of AWE for RCS Frequency Response Calculations Using Method of Moments

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Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Application of AWE for RCS Frequency Response Calculations Using Method of Moments by : C. J. Reddy

Download or read book Application of AWE for RCS Frequency Response Calculations Using Method of Moments written by C. J. Reddy and published by . This book was released on 1996 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods

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Publisher : Springer Science & Business Media
ISBN 13 : 3540774483
Total Pages : 584 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods by : Steffen Marburg

Download or read book Computational Acoustics of Noise Propagation in Fluids - Finite and Boundary Element Methods written by Steffen Marburg and published by Springer Science & Business Media. This book was released on 2008-02-27 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a survey of numerical methods for acoustics, namely the finite element method (FEM) and the boundary element method (BEM). It is the first book summarizing FEM and BEM (and optimization) for acoustics. The book shows that both methods can be effectively used for many other cases, FEM even for open domains and BEM for closed ones. Emphasis of the book is put on numerical aspects and on treatment of the exterior problem in acoustics, i.e. noise radiation.

Analysis of Multiconductor Transmission Lines

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Publisher : John Wiley & Sons
ISBN 13 : 0470131543
Total Pages : 821 pages
Book Rating : 4.4/5 (71 download)

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Book Synopsis Analysis of Multiconductor Transmission Lines by : Clayton R. Paul

Download or read book Analysis of Multiconductor Transmission Lines written by Clayton R. Paul and published by John Wiley & Sons. This book was released on 2007-10-26 with total page 821 pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential textbook for electrical engineering students and professionals-now in a valuable new edition The increasing use of high-speed digital technology requires that all electrical engineers have a working knowledge of transmission lines. However, because of the introduction of computer engineering courses into already-crowded four-year undergraduate programs, the transmission line courses in many electrical engineering programs have been relegated to a senior technical elective, if offered at all. Now, Analysis of Multiconductor Transmission Lines, Second Edition has been significantly updated and reorganized to fill the need for a structured course on transmission lines in a senior undergraduate- or graduate-level electrical engineering program. In this new edition, each broad analysis topic, e.g., per-unit-length parameters, frequency-domain analysis, time-domain analysis, and incident field excitation, now has a chapter concerning two-conductor lines followed immediately by a chapter on MTLs for that topic. This enables instructors to emphasize two-conductor lines or MTLs or both. In addition to the reorganization of the material, this Second Edition now contains important advancements in analysis methods that have developed since the previous edition, such as methods for achieving signal integrity (SI) in high-speed digital interconnects, the finite-difference, time-domain (FDTD) solution methods, and the time-domain to frequency-domain transformation (TDFD) method. Furthermore, the content of Chapters 8 and 9 on digital signal propagation and signal integrity application has been considerably expanded upon to reflect all of the vital information current and future designers of high-speed digital systems need to know. Complete with an accompanying FTP site, appendices with descriptions of numerous FORTRAN computer codes that implement all the techniques in the text, and a brief but thorough tutorial on the SPICE/PSPICE circuit analysis program, Analysis of Multiconductor Transmission Lines, Second Edition is an indispensable textbook for students and a valuable resource for industry professionals.

MATLAB-based Finite Element Programming in Electromagnetic Modeling

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Publisher : CRC Press
ISBN 13 : 0429854609
Total Pages : 428 pages
Book Rating : 4.4/5 (298 download)

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Book Synopsis MATLAB-based Finite Element Programming in Electromagnetic Modeling by : Özlem Özgün

Download or read book MATLAB-based Finite Element Programming in Electromagnetic Modeling written by Özlem Özgün and published by CRC Press. This book was released on 2018-09-03 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a self-contained, programming-oriented and learner-centered book on finite element method (FEM), with special emphasis given to developing MATLAB® programs for numerical modeling of electromagnetic boundary value problems. It provides a deep understanding and intuition of FEM programming by means of step-by-step MATLAB® programs with detailed descriptions, and eventually enabling the readers to modify, adapt and apply the provided programs and formulations to develop FEM codes for similar problems through various exercises. It starts with simple one-dimensional static and time-harmonic problems and extends the developed theory to more complex two- or three-dimensional problems. It supplies sufficient theoretical background on the topic, and it thoroughly covers all phases (pre-processing, main body and post-processing) in FEM. FEM formulations are obtained for boundary value problems governed by a partial differential equation that is expressed in terms of a generic unknown function, and then, these formulations are specialized to various electromagnetic applications together with a post-processing phase. Since the method is mostly described in a general context, readers from other disciplines can also use this book and easily adapt the provided codes to their engineering problems. After forming a solid background on the fundamentals of FEM by means of canonical problems, readers are guided to more advanced applications of FEM in electromagnetics through a survey chapter at the end of the book. Offers a self-contained and easy-to-understand introduction to the theory and programming of finite element method. Covers various applications in the field of static and time-harmonic electromagnetics. Includes one-, two- and three-dimensional finite element codes in MATLAB®. Enables readers to develop finite element programming skills through various MATLAB® codes and exercises. Promotes self-directed learning skills and provides an effective instruction tool.

Quick Finite Elements for Electromagnetic Waves

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Author :
Publisher : Artech House
ISBN 13 : 1596933461
Total Pages : 311 pages
Book Rating : 4.5/5 (969 download)

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Book Synopsis Quick Finite Elements for Electromagnetic Waves by : Giuseppe Pelosi

Download or read book Quick Finite Elements for Electromagnetic Waves written by Giuseppe Pelosi and published by Artech House. This book was released on 2009 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: The classic 1998 Artech House book, Quick Finite Elements for Electromagnetic Waves, has now been revised and expanded to bring you up-to-date with the latest developments in the Field. You find brand new discussions on finite elements in 3D, 3D resonant cavities, and 3D waveguide devices. Moreover, the second edition supplies you with MATLAB code, making this resource easier to comprehend and use for your projects in the field. This practical book and accompanying software enables you to quickly and easily work out challenging microwave engineering and high-frequency electromagnetic problems using the finite element method (FEM). Using clear, concise text and dozens of real-world application examples, the book provides a detailed description of FEM implementation, while the software provides the code and tools needed to solve the three major types of EM problems: guided propagation, scattering, and radiation. With this unique book and software set in hand, you can compute the dispersion diagram of arbitrarily shaped inhomogeneous isotropic lossless or lossy guiding structures, analyze E- and H-plane waveguide discontinuities and devices, and understand the reflection from and transmission through simple 2D and 3D inhomogeneous periodic structures. CD-ROM Included! Easy-to-use finite element software contains ready-made MATLAB and FORTRAN source code that you can use immediately to solve a wide range of microwave and EM problems. The package is fully compatible with Internet "freeware, " so you can perform advanced engineering functions without having to purchase expensive pre- and post-processing tools.

Frequency Response Calculations of Input Characteristics of Cavity-Backed Aperture Antennas Using AWE with Hybrid FEM/MoM Technique

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Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Frequency Response Calculations of Input Characteristics of Cavity-Backed Aperture Antennas Using AWE with Hybrid FEM/MoM Technique by : C. J. Reddy

Download or read book Frequency Response Calculations of Input Characteristics of Cavity-Backed Aperture Antennas Using AWE with Hybrid FEM/MoM Technique written by C. J. Reddy and published by . This book was released on 1997 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Application of AWE Along with a Combined FEM/MoM Technique to Compute RCS of a Cavity-Backed Aperture in an Infinite Ground Plane Over a Frequency Range

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Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Application of AWE Along with a Combined FEM/MoM Technique to Compute RCS of a Cavity-Backed Aperture in an Infinite Ground Plane Over a Frequency Range by : C. J. Reddy

Download or read book Application of AWE Along with a Combined FEM/MoM Technique to Compute RCS of a Cavity-Backed Aperture in an Infinite Ground Plane Over a Frequency Range written by C. J. Reddy and published by . This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: