Li Electromagnetic Fields in Stratified Media

1. Auflage 2009
ISBN: 978-3-540-95964-9
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 224 Seiten

Reihe: Advanced Topics in Science and Technology in China

'Electromagnetic Fields in Stratified Media' deals with an important branch of electromagnetic theory, which has many useful applications in subsurface communication, radar, and geophysical prospecting and diagnostics. The book introduces to the electromagnetic theory and wave propagation in complex media, while presenting detailed models for various media: 3, 4, N-layered media, boundary conditions, and anisotropic media. In particular, the complete solutions for a trapped surface wave and lateral wave in a three- or four-layered region, the complete solutions for low frequency wave propagation over a spherical surface coated with a dielectric layer, and the transient field of a horizontal dipole in the boundary layer of two different media are presented. The book is designed for the scientists and engineers engaged in antennas and propagation, EM theory and applications. Dr. Kai Li is Professor at Zhejiang University.

Autoren/Hrsg.

Li, Kai

Inhaltsverzeichnis

1;Preface;6
2;Contents;8
3;1 Historical and Technical Overview of Electromagnetic Fields in Stratified Media;11
3.1;1.1 Electromagnetic Wave Along Air-Earth Boundary;11
3.2;1.2 Surface Waves Along Surfaces of Stratified Media;13
3.3;1.3 Lateral Waves Along the Air-Earth Boundary;16
3.4;1.4 Trapped Surface Wave in the Presence of Three- Layered Region;16
3.5;1.5 Electromagnetic Field Radiated by a Dipole over Spherical Earth;18
3.6;References;19
4;2 Electromagnetic Field of a Vertical Electric Dipole in the Presence of a Three- Layered Region;25
4.1;2.1 Introduction;25
4.2;2.2 The Integrated Formulas for Electromagnetic Field in Air;26
4.3;2.3 Field of Vertical Dipole over Dielectric-Coated Perfect Conductor;30
4.3.1;2.3.1 Integrated Formulas of the Electromagnetic Field in Air;30
4.3.2;2.3.2 Evaluations of Trapped Surface Wave and Lateral Wave;31
4.3.3;2.3.3 Final Formulas for the Electromagnetic Field Components;37
4.3.4;2.3.4 Computations and Discussions;38
4.4;2.4 Field of Vertical Dipole over Dielectric-Coated Imperfect Conductor;42
4.4.1;2.4.1 Statements of the Problem;42
4.4.2;2.4.2 The Trapped Surface Wave;43
4.4.3;2.4.3 Lateral Wave;45
4.4.4;2.4.4 Final Formulas for the Electromagnetic Field Components;47
4.4.5;2.4.5 Computations and Discussions;48
4.5;2.5 Radiation from Vertical Dipole in Three-Layered Region;52
4.5.1;2.5.1 Field of Vertical Dipole in Three-Layered Region;52
4.5.2;2.5.2 Graphical Representations of the Far Field;56
4.6;References;63
5;3 Electromagnetic Field of a Horizontal Electric Dipole in the Presence of a Three- Layered Region;65
5.1;3.1 Introduction;65
5.2;3.2 Electromagnetic Field of Horizontal Electric Dipole;66
5.2.1;3.2.1 Integrated Formulas for Electromagnetic Field in Air;66
5.2.2;3.2.2 Evaluation for the Electric-Type Field;69
5.2.3;3.2.3 Evaluation for the Magnetic-Type Field;72
5.2.4;3.2.4 New Techniques for Determining the Poles .E and .B;75
5.2.5;3.2.5 Final Formulas for Six Field Components;78
5.2.6;3.2.6 Computations and Conclusions;79
5.3;3.3 Radiation of Horizontal Electric Dipole and Microstrip Antenna;83
5.3.1;3.3.1 Radiation of a Horizontal Electric Dipole;83
5.3.2;3.3.2 Microstrip Antenna;87
5.3.3;3.3.3 Computations and Discussions;89
5.4;3.4 Summary;94
5.5;References;94
6;4 Electromagnetic Field of a Vertical Electric Dipole in the Presence of a Four- Layered Region;97
6.1;4.1 Introduction;97
6.2;4.2 Formulation of Problem;98
6.3;4.3 Evaluations of the Trapped Surface Wave and Lateral Wave;100
6.4;4.4 Computations and Conclusions;106
6.5;References;109
7;5 Electromagnetic Field of a Horizontal Electric Dipole in the Presence of a Four- Layered Region;112
7.1;5.1 Integrated Formulas for the Electromagnetic Field;112
7.2;5.2 Evaluation for the Electric-Type Field;117
7.3;5.3 Evaluation for the Magnetic-Type Field;122
7.4;5.4 Final Formulas for the Six-Field Components;126
7.5;5.5 Computations and Conclusions;127
7.6;References;130
8;6 Electromagnetic Field Radiated by a Dipole Source over a Dielectric- Coated Spherical Earth;132
8.1;6.1 Introduction;132
8.2;6.2 Electromagnetic Field due to Vertical Electric Dipole;133
8.2.1;6.2.1 Formulations of the Problem;133
8.2.2;6.2.2 Determination of the Coefficient;137
8.2.3;6.2.3 Final Formulas of the Electromagnetic Field;140
8.2.4;6.2.4 Computations for Parameters;140
8.2.5;6.2.5 Analysis and Computations;145
8.3;6.3 Electromagnetic Field due to Vertical Magnetic Dipole;146
8.4;6.4 Electromagnetic Field due to Horizontal Electric Dipole;149
8.5;6.5 Summary;153
8.6;References;153
9;7 Electromagnetic Field of a Dipole Source over the Spherical Surface of Multi- Layered Earth;155
9.1;7.1 Introduction;155
9.2;7.2 Electromagnetic Field due to Vertical Electric Dipole;157
9.3;7.3 Electromagnetic Field due to Vertical Magnetic Dipole;161
9.4;7.4 Electromagnetic Field due to Horizontal Electric Dipole;163
9.5;7.5 Computations and Conclusions;165
9.6;References;170
10;8 Exact Transient Field of a Horizontal Electric Dipole on the Boundary Between Two Dielectrics;172
10.1;8.1 Introduction;172
10.2;8.2 Exact Transient Field with Delta Function Excitation;173
10.2.1;8.2.1 Formal Representations of Time-independent Field due to Horizontal Electric Dipole;173
10.2.2;8.2.2 Time-Dependent Component E2.;176
10.2.3;8.2.3 Time-Dependent Component E2f;192
10.2.4;8.2.4 Time-Dependent Component B2z;197
10.2.5;8.2.5 Discussions and Conclusions;200
10.3;8.3 Exact Transient Field with Gaussian Excitation;200
10.3.1;8.3.1 Exact Formulas for the Transient Field of Horizontal Dipole Excited by a Gaussian Pulse on the Boundary Between Two Dielectrics;200
10.3.2;8.3.2 Computations and Conclusions;204
10.4;References;206
11;9 Approximate Transient Field of Horizontal Electric Dipole on the Boundary Between a Homogeneous Isotropic Medium and One- Dimensionally Anisotropic Medium;209
11.1;9.1 Statements of Problem;209
11.2;9.2 The Approximate Transient Field with Delta Function Excitation;210
11.3;9.3 Approximate Formulas for the Transient Field with Gaussian Excitation;218
11.4;References;225
12;Index;227