工程电磁场(第7版)(英文影印版)

2.5 Field of a Sheet of Charge 43
2.6 Streamlines and Sketches of Fields 45 References 48
Chapter 2 Problems 48
Chapter 3
Electric Flux Density, Gauss's Law,
and Divergence 51
3.1 Electric Flux Density 51
3.2 Gauss's Law 55
3.3 Application of Gauss's Law: Some Symmetrical Charge Distributions 59
3.4 Application of Gauss's Law: Differential Volume Element 64
3.5 Divergence 67
3.6 Maxwell's First Equation (Electrostatics) 70
3.7 The Vector Operator V and the Divergence
Theorem 72
References 75
Chapter 3 Problems 76
Chapter 4
Energy and Potential 80
4.1 Energy Expended in Moving a Point Charge in an Electric Field 81
4.2 The Line Integral 82
4.3 Definition of Potential Difference and Potential 87
4.4 The Potential Field of a Point Charge 89
4.5 The Potential Field of a System of Charges: Conservative Property 91
4.6 Potential Gradient 95
4.7 The Dipole 101
4.8 Energy Density in the Electrostatic Field 106
References 110
Chapter 4 Problems 110
Chapter 5 Current and Conductors 114
5.1 Current and Current Density 114
5.2 Continuity of Current 116
5.3 Metallic Conductors 118
5.4 Conductor Properties and Boundary Conditions 123
5.5 The Method of Images 128
5.6 Semiconductors 130
References 132
Chapter 5 Problems 132
Dielectrics and Capacitance 136
6.1 The Nature of Dielectric Materials 137
6.2 Boundary Conditions for Perfect Dielectric Materials 143
6.3 Capacitance 149
6.4 Several Capacitance Examples 152
6.5 Capacitance of a Two-Wire Line 155
6.6 Using Field Sketches to Estimate Capacitance in Two-Dimensional Problems 160
6.7 Current Analogies 165 References 167
Chapter 6 Problems 167
Chapter 7 Poisson's and Laplace's
Equations 172
7.1 Derivation of Poisson's and Laplace's Equations 173
7.2 Uniqueness Theorem 175
7.3 Examples of the Solution of Laplace's Equation 177
7.4 Example of the Solution of Poisson's Equation 184
7.5 Product Solution of Laplace's Equation 188
7.6 Solving Laplace's Equation Through Numerical Iteration 196
References 202
Chapter 7 Problems.. 203
The Steady Magnetic Field 210
8.1 Biot-Savart Law 210
8.2 Ampere's Circuital Law 218
8.3 Curl 225
8.4 Stokes' Theorem 232
8.5 Magnetic Flux and Magnetic Flux Density 237
8.6 The Scalar and Vector Magnetic Potentials 240
8.7 Derivation of the Steady-Magnetic-Field Laws 247
References 253
Chapter 8 Problems 253
Chapter 9 Magnetic Forces, Materials, and Inductance 259
9.1 Force on a Moving Charge 260
9.2 Force on a Differential Current Element 261
9.3 Force Between Differential Current Elements 265
9.4 Force and Torque on a Closed Circuit 267
9.5 The Nature of Magnetic Materials 273
9.6 Magnetization and Permeability 276
9.7 Magnetic Boundary Conditions 281
9.8 The Magnetic Circuit 284
9.9 Potential Energy and Forces on Magnetic Materials 290
9.10 Inductance and Mutual Inductance 292
References 299
Chapter 9 Problems 299
Chapter 10 Time-Varying Fields and Maxwell's Equations 306
10.1 Faraday's Law 306
10.2 Displacement Current 313
10.3 Maxwell's Equations in PointForm 317
10.4 Maxwell's Equations in Integral Form 319
10.5 The Retarded Potentials 321
References 325
Chapter 10 Problems 325
Chapter 12 The Uniform Plane Wave 332
12.1 Wave Propagation in Free Space 332
12.2 Wave Propagation in Dielectrics 340
12.3 Poynting's Theorem and Wave Power 349
12.4 Propagation in Good Conductors: Skin Effect 352
12.5 Wave Polarization 359
References 366
Chapter 12 Problems 366
Chapter 13 Plane Wave Reflection and Dispersion 370
13.1 Reflection of Uniform Plane Waves at Normal Incidence 370
13.2 Standing Wave Ratio 377
13.3 Wave Reflection from Multiple Interfaces 381
13.4 Plane Wave Propagation in General Directions 389
13.5 Plane Wave Reflection at Oblique Incidence Angles 392
13.6 Total Reflection and Total Transmission of Obliquely Incident Waves 398
13.7 Wave Propagation in Dispersive Media 401
13.8 Pulse Broadening in Dispersive Media 407
References 411
Chapter 13 Problems 412
Chapter 14 Guided Waves and Radiation 416
14.1 Transmission Line Fields and Primary Constants 417
14.2 Basic Waveguide Operation 426
14.3 Plane Wave Analysis of the Parallel-Plate Waveguide 430
14.4 Parallel-Plate Guide Analysis Using the Wave Equation 439
14.5 Rectangular Waveguides 442
14.6 Planar Dielectric Waveguides 447
14.7 OpticalFiber 453
14.8 Basic Antenna Principles 463
References 473
Chapter 14 Problems 473
Appendix A
Vector Analysis 478
A.1 General Curvilinear Coordinates 478
A.2 Divergence, Gradient, and Curl in General Curvilinear Coordinates 479
A.3 Vectorldentities 481
Appendix B
Units 482
Appendix C
Material Constants 487
Appendix D
Origins of the Complex
Permittivity 490
Appendix E
Answers to Odd-Numberod
Problems... 497