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Time Domain Electromagnetics : Academic Press Series in Engineering - Sadasiva M. Rao

Time Domain Electromagnetics

Academic Press Series in Engineering

By: Sadasiva M. Rao (Editor)

Paperback Published: 1st June 1999
ISBN: 9780125801904
Number Of Pages: 372

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Time Domain Electromagnetics deals with a specific technique in electromagnetics within the general area of electrical engineering. This mathematical method has become a standard for a wide variety of applications for design and problem solving. This method of analysis in electromagnetics is directly related to advances in cellular and mobile communications technology, as well as traditional EM areas such as radar, antennas, and wave propagation. Most of the material is available in the research journals which is difficult for a non-specialist to locate, read, understand, and effectively use for the problem at hand.

* Only book currently available to practicing engineers and research scientists exclusively devoted to this subject
* Includes contributions by the world's leading experts in electromagnetics
* Presents the most popular methods used in time domain analysis are included at one place with thorough discussion of the methods in an easily understandable style
* In each chapter, many simple and practical examples are discussed thoroughly to illustrate the salient points of the material presented
* All chapters are written in a consistent style that allows the book to be of use for self-study by professionals as well as for use in a graduate-level course in electrical engineering

"The textbook describes the use of existing direct time domain methods for calculating electromagnetic scattering/interaction phenomenon. Consisting of nine chapters, the first half of the book deals with the solution of integral equations, while the second part examines the differential equation methods. Familiarity with Maxwell's equations is assumed. No exercises are included." -- Copyright (c) 1999 Book News, Inc., Portland, OR All rights reserved Book News, Inc.(R), Portland, OR

Prefacep. x
Acknowledgmentsp. x
Contributorsp. xi
Introductionp. 1
An Initial Exploration of Time Domain Phenomenap. 1
The Infinite-Length Wire Antennap. 2
The Finite-Length Wire Antennap. 4
The Finite-Length Wire Scattererp. 7
Late-Time Radiation from an Impulsively Excited Perfect Conductorp. 9
Some Special Capabilities of Time Domain Modelsp. 10
Modeling Chocies in CEMp. 11
Why Model in the Time Domain?p. 13
Evolution of Time Domain Modelingp. 13
Some General Referencesp. 14
General Aspects of Time Domain Modelingp. 15
Model Developmentp. 15
Explicit vs Implicit Solutionp. 15
Excitation Requirementsp. 16
TD Solutionp. 16
Time Domain Integral Equation Modelingp. 17
Some Representative TDIEsp. 17
A Prototype TDIE Modelp. 18
Alternate Forms for a TDIE Solutionp. 19
Excitation of a TDIE Modelp. 20
Physical Implication of a TDIE Explicit Modelp. 21
A Near-Neighbor TD Approximationp. 22
Time Domain Differential Equation Modelingp. 23
Space-Time Sampling of TDDEp. 23
Some Spatial-Mesh Alternativesp. 25
Mesh Closure Conditionsp. 28
Handling Small Features in DE Modelsp. 31
Obtaining Far Fields from DE Modelsp. 32
Variations of TDDE Modelsp. 32
Comparison of TDDE and TDIE Modelsp. 33
Specific Issues Related to Time Domain Modelingp. 35
Increasing the Stability of the Time-Stepping Solutionp. 35
Exploiting EM Singularitiesp. 36
Signal Processing as a Part of TD Modelingp. 36
Total-Field and Scattered-Field Formulationsp. 38
Handling Frequency Dispersion and Loading in TD Modelsp. 38
Handling Medium and Component Nonlinearities or Time Variations in TD Modelsp. 39
Hybrid TD Modelsp. 40
The Concept of Pseudo-Time in Iterative FD Solutionsp. 41
Exploiting Symmetries in TD Modelingp. 41
Concluding Remarksp. 42
Acknowledgmentsp. 42
Bibliographyp. 42
Wire Structures: TDIE Solutionp. 49
Basic Analysisp. 50
Analysis of a Straight Wirep. 52
Method of Moments Solutionp. 53
Conjugate Gradient Method Solutionp. 55
Numerical Examplep. 57
Analysis of an Arbitrary Wirep. 57
Moment Method Solutionp. 59
Conjugate Gradient Methodp. 62
Numerical Examplesp. 63
Implicit Solution Schemep. 65
Application to Arbitrary Wirep. 66
Numerical Implementationp. 66
Numerical Examplesp. 68
Analysis of Multiple Wires and Wire Junctionsp. 70
Concluding Remarksp. 72
Bibliographyp. 72
Infinite Conducting Cylinders: TDIE Solutionp. 75
Integral Equation Formulationp. 76
Discretization Schemep. 77
TM Incidence: EFIE Formulationp. 79
Explicit Solution Procedurep. 79
Implicit Solution Procedurep. 81
Numerical Examplesp. 82
TE Incidence: EFIE Formulationp. 85
Explicit Solution Procedurep. 85
Implicit Solution Procedurep. 88
Numerical Examplesp. 89
TE Incidence: HFIE Formulationp. 91
Explicit Solution Procedurep. 91
Implicit Solution Procedurep. 93
Numerical Examplesp. 93
Concluding Remarksp. 94
Bibliographyp. 95
Finite Conducting Bodies: TDIE Solutionp. 97
Integral Equation Formulationp. 97
Numerical Solution Schemep. 99
Explicit Numerical Methodp. 101
Implicit Numerical Methodp. 104
Efficiency Considerationsp. 106
Numerical Examplesp. 107
Far-Scattered Fieldsp. 111
Numerical Examplesp. 112
Near-Scattered Fieldsp. 115
Extrapolation of Time Domain Responsep. 118
Matrix Pencil Methodp. 120
Total Least Squares Matrix Pencilp. 122
Numerical Examplesp. 123
Concluding Remarksp. 128
Bibliographyp. 128
Dielectric Bodies: TDIE Solutionp. 131
Integral Equation Formulationp. 131
Two-Dimensional Cylindersp. 134
Numerical Solution Procedurep. 135
Numerical Examplesp. 138
Three-Dimensional Bodiesp. 140
Numerical Solution Procedurep. 140
Far-Scattered Fieldsp. 144
Numerical Examplesp. 146
Concluding Remarksp. 147
Bibliographyp. 149
Finite-Difference Time Domain Methodp. 151
Introduction to FDTDp. 151
Pulse Propagation in a Lossy, Inhomogeneous, Layered Mediump. 153
Propagation of Half-Sine Pulsep. 159
Remote Sensing of Inhomogeneous, Lossy, Layered Mediap. 164
Profile Inversion Resultsp. 166
Key Elements of FDTD Modeling Theoryp. 168
FDTD Formulation for Two-Dimensional Closed-Region Problemsp. 171
FDTD Formulation for TM and TE Casesp. 172
Hollow Rectangular Waveguidep. 176
Dielectric Slab-Loaded Rectangular Waveguidep. 181
Shielded Microstrip Linesp. 183
FDTD Formulation for Two-Dimensional Open-Region Problemsp. 184
Absorbing Radiation Boundary Conditionp. 186
Second-Order Radiation Boundary Conditionp. 187
Plane Wave Source Conditionp. 191
Near- to Far-Field Transformationp. 195
FDTD Modeling of Curved Surfacesp. 199
Perfectly Conducting Object: The TE Casep. 200
Perfectly Conducting Object: The TM Casep. 204
Homogeneous Dielectric Object: The TE Casep. 206
FDTD Formulation for Three-Dimensional Closed-Region Problemsp. 209
Three-Dimensional Full-Wave Analysisp. 210
Compact Two-Dimensional FDTD Algorithmp. 214
Evaluation of Dispersion Characteristicsp. 219
FDTD Formulation for Three-Dimensional Open-Region Problemsp. 221
Second-Order Radiation Boundary Conditionp. 222
Three-Dimensional Plane Wave Source Conditionp. 226
Near- to Far-Field Transformation for the Three-Dimensional Casep. 229
RCS of a Flat-Plate Scattererp. 231
Computer Resources and Modeling Implicationsp. 232
Concluding Remarksp. 233
Acknowledgmentsp. 234
Bibliographyp. 234
Transmission Line Modeling Methodp. 237
The Two-Dimensional TLMp. 238
Time Domain Wave Equationp. 238
Time Domain Transmission Line Equationp. 239
Equating Maxwell's and the Circuit Equationsp. 242
General Scattering Matrix Theoryp. 243
Applying Scattering Theory to the Free-Space Shunt T-Linep. 244
Modeling Inhomogeneous Lossy Mediap. 246
Excitation of the TLM Mesh and Metallic Boundariesp. 248
TLM Mesh Truncation Conditionsp. 250
Discretization of the TLM Spatial Gridp. 253
TLM Outputp. 256
The Series Node and Dualityp. 258
Outline of the Algorithm for Two-Dimensional TLM Codep. 260
Three-Dimensional TLMp. 261
Special Features in TLMp. 266
Frequency-Dependent Materialp. 266
Alternative Meshing Schemesp. 267
Numerical Examplesp. 269
Antenna Arrayp. 269
Electromagnetic Scatteringp. 272
Concluding Remarksp. 273
Bibliographyp. 274
Finite-Element Time Domain Methodp. 279
Introductionp. 279
Incident Fieldp. 281
Transverse Magnetic Casep. 282
Formulationp. 283
Finite-Element Procedurep. 286
Time-Stepping Procedurep. 288
Numerical Resultsp. 290
Transverse Electric Casep. 295
Formulationp. 296
Finite-Element Procedurep. 298
Time-Stepping Procedurep. 299
Numerical Resultsp. 300
Concluding Remarksp. 304
Bibliographyp. 305
Finite-Volume Time Domain Methodp. 307
Maxwell's Equations as a Hyperbolic Conservative Systemp. 308
The Conservative Form of Maxwell's Equationsp. 310
Characteristics and Wavefront Propagationp. 312
An Elementary Form of the Finite-Volume Methodp. 314
Finite-Volume Discretization of Maxwell's Equationsp. 319
Spatial Discretizationsp. 319
Temporal Discretizationp. 331
Consistency and Stabilityp. 333
Hybridization of the FVTD Method with Other Models and Methodsp. 338
Thin-Wire Models in the FVTD Methodp. 339
Hybridization of the FVTD and the FDTD Methodsp. 344
Another Approach of the Finite-Volume Approachp. 350
Numerical Examplesp. 357
Dielectric Structuresp. 357
Thin Screens with Finite Conductivityp. 359
Thin Wiresp. 361
Concluding Remarksp. 363
Acknowledgmentsp. 365
Bibliographyp. 365
Indexp. 369
Table of Contents provided by Syndetics. All Rights Reserved.

ISBN: 9780125801904
ISBN-10: 0125801904
Series: Academic Press Series in Engineering
Audience: General
Format: Paperback
Language: English
Number Of Pages: 372
Published: 1st June 1999
Publisher: ACADEMIC PR INC
Country of Publication: US
Dimensions (cm): 26.19 x 18.72  x 3.02
Weight (kg): 1.0