Applied Electromagnetics

A timely and authoritative update to a leading text on the applied electromagnetics of transmission lines In the newly revised second edition of Applied Electromagnetics: Early Transmission Lines Approach, experienced engineer and professor Stuart Wentworth delivers an up-to-date and authoritative discussion of the electromagnetic foundations of signal transmission. The book explains practical applications for wireless systems, transmission lines, waveguides (including optical fiber), and antennas. Wentworth provides a detailed theoretical grounding of the subject and combines it with hands-on MATLAB simulations available on the web that help students understand critical concepts. Brand-new end-of-chapter problems at a broad range of difficulty levels Many more drill and example problems Worked solutions provided on the companion website Extensively updated material as well as entirely new material on metamaterials and patch antennas Perfect for undergraduate students of electrical engineering, Applied Electromagnetics: Early Transmission Lines Approach will also benefit researchers and educators in electrical engineering.

About the Author xi Preface xii Acknowledgments xvii About the Companion Website xviii Chapter 1 1.1 Electromagnetic Fields 3 1.2 Electromagnetic Spectrum 9 1.3 Numeric Considerations 11 1.4 Wireless Communications 14 1.5 Wave Fundamentals 16 1.6 Phasors 22 Chapter 2 2.1 Distributed-Parameter Model 29 2.2 Time-Harmonic Waves on Transmission Lines 37 2.3 Power Transmission 45 2.4 Terminated T-Lines 49 2.5 The Complete Circuit 58 2.6 The Smith Chart 63 2.7 Impedance Matching 79 2.8 Microstrip 102 2.9 Transients 108 2.10 Dispersion 123 Chapter 3 3.1 Vectors in The Cartesian Coordinate System 140 3.2 Coulomb's Law 146 3.3 Spherical Coordinate System 153 3.4 Line Charges and The Cylindrical Coordinate System 159 3.5 Surface and Volume Charge 169 3.6 Electric Flux Density 177 3.7 Gauss's Law and Applications 182 3.8 Divergence and The Point Form of Gauss's Law 190 3.9 Electric Potential 196 3.10 Conductors and Ohm's Law 205 3.11 Dielectrics 212 3.12 Boundary Relations 218 3.13 Boundary Value Problems 223 3.14 Capacitance 231 Chapter 4 4.1 Magnetic Fields and The Cross Product 251 4.2 Biot-Savart's Law 258 4.3 Ampere's Circuit Law 270 4.4 Curl and The Point Form of Ampere's Circuit Law 280 4.5 Magnetic Flux Density 287 4.6 Magnetic Forces 289 4.7 Magnetic Materials 303 4.8 Boundary Conditions 309 4.9 Inductance and Magnetic Energy 314 4.10 Magnetic Circuits 326 Chapter 5 5.1 Current Continuity and Relaxation Time 349 5.2 Faraday's Law and Transformer Emf 352 5.3 Faraday's Law and Motional Emf 362 5.4 Displacement Current 370 5.5 Maxwell's Equations 375 5.6 Lossless Tem Waves 376 5.7 Time-Harmonic Fields and Phasors 381 Chapter 6 6.1 General Wave Equations 393 6.2 Propagation in Lossless, Charge-Free Media 400 6.3 Propagation in Dielectrics 402 6.4 Propagation in Conductors 408 6.5 The Poynting Theorem and Power Transmission 416 6.6 Polarization 421 6.7 Reflection and Transmission at Normal Incidence 427 6.8 Reflection and Transmission at Oblique Incidence 434 6.9 Waves in Metamaterials 448 Chapter 7 7.1 Dielectric Waveguide 463 7.2 Rectangular Waveguide Fundamentals 478 7.3 Optical Fiber 492 7.4 Fiber-Optic Communication Systems 500 7.5 Optical Link Design 508 Chapter 8 8.1 General Properties 520 8.2 Electrically Short Antennas 535 8.3 Dipole Antennas 546 8.4 Monopole Antennas 555 8.5 Patch Antennas 560 8.6 Antenna Arrays 569 8.7 The Friis Transmission Equation 586 8.8 Radar 599 Appendix A Vector Relations 615 Appendix B Coordinate System Transformations 618 Appendix C Complex Numbers 622 Appendix D Integrals, Conversions, and Constants 624 Appendix E Material Properties 627 Index 631