Computational electromagnetics

About: Computational electromagnetics is a research topic. Over the lifetime, 6412 publications have been published within this topic receiving 113727 citations. The topic is also known as: Electromagnetic field analysis.

Spectral FDTD: a novel computational technique for the analysis of periodic structures

Abstract: The finite-difference time-domain (FDTD) technique is a robust analysis tool in electromagnetics. Recently, periodic structures, in which a periodicity exists in one or more of their dimensions, have been given special attention. In the analysis of periodic structures by FDTD, implementation becomes difficult for a plane wave at oblique incidence. The paper presents a novel technique, referred to as spectral FDTD, for the analysis of a plane wave incident on 2D periodic ground planes. Each simulation by the spectral FDTD gives the reflection coefficient for a fixed value of wavenumber over a wide range of frequencies. The technique provides stable results for grazing incidence, where most algorithms fail.

Numerical Methods for Engineering: An introduction using MATLAB® and computational electromagnetics examples

Abstract: The revised and updated second edition of this textbook teaches students to create modeling codes used to analyze, design, and optimize structures and systems used in wireless communications, microwave circuits, and other applications of electromagnetic fields and waves. Worked code examples are provided for key algorithms using the MATLAB technical computing language. The book begins by introducing the field of numerical analysis and providing an overview of the fundamentals of electromagnetic field theory. Further chapters cover basic numerical tasks, finite difference methods, numerical integration, integral equations and the method of moments, solving linear systems, the finite element method, optimization methods, and inverse problems. Developing and using numerical methods helps students to learn the theory of wave propagation in a concrete, visual, and hands-on way. This book fills the missing space of current textbooks that either lack depth on key topics or treat the topic at a level that is too advanced for undergraduates or first-year graduate students. Presenting the topic with clear explanations, relevant examples, and problem sets that move from simple algorithms to complex codes with real-world capabilities, this book helps its readers develop the skills required for taking a mathematical prescription for a numerical method and translating it into a working, validated software code, providing a valuable resource for understanding the finite difference method, the method of moments, the finite element method, and other tools used in the RF and wireless industry.