With the rapid growth of wireless technologies, more and more people are trying to gain a better understanding of electromagnetics. After all, electromagnetic fields have a direct impact on reception in all wireless applications. This text explores electromagnetics, presenting practical applications for wireless systems, transmission lines, waveguides, antennas, electromagnetic interference, and microwave engineering. It is designed for use in a one- or two-semester electromagnetics sequence for electrical engineering students at the junior and senior level. The first book on the subject to tackle the impact of electromagnetics on wireless applications: Includes numerous worked-out example problems that provide you with hands-on experience in solving electromagnetic problems. Describes a number of practical applications that show how electromagnetic theory is put into practice. Offers a concise summary at the end of each chapter that reinforces the key points. Detailed MATLAB examples are integrated throughout the book to enhance the material.

Stuart M. Wentworth received his B.S degree in Chemical Engineering from Auburn University, Alabama, in 1982 and his M.S. in 1987 and Ph.D in 1990 degrees in Electrical Engineering from the University of Texas at Austin. He has been a member of the Electrical & Computer Engineering faculty at Auburn University, Alabama since 1990. Dr. Wentworth's research has focused on the high frequency characterization of materials used for electronics packaging.

Introduction	p. 1
The Electromagnetic Spectrum	p. 2
Wireless Communications	p. 4
Dealing with Units	p. 5
Fundamental Electromagnetics	p. 9
Electrostatics	p. 11
Vectors in the Cartesian Coordinate System	p. 12
Coulomb's Law	p. 18
Electric Field Intensity	p. 20
Field Lines	p. 21
The Spherical Coordinate System	p. 22
Line Charges and the Cylindrical Coordinate System	p. 26
Infinite Length Line of Charge	p. 29
Ring of Charge	p. 33
Surface and Volume Charge	p. 35
Volume Charge	p. 39
Practical Application: Laser Printer	p. 43
Electric Flux Density	p. 44
Gauss's Law and Applications	p. 47
Coaxial Cable	p. 51
Divergence and the Point Form of Gauss's Law	p. 54
Electric Potential	p. 59
Gradient	p. 63
Conductors and Ohm's Law	p. 68
Current and Current Density	p. 69
Joule's Law	p. 72
Dielectrics	p. 73
Practical Application: Electret Microphone	p. 76
Boundary Conditions	p. 77
Boundary Value Problems	p. 80
Capacitance	p. 84
Electrostatic Potential Energy	p. 87
Practical Application: Electrolytic Capacitors	p. 88
Summary	p. 89
Problems	p. 91
Magnetostatics	p. 96
Magnetic Fields and the Cross Product	p. 97
Oersted's Experiment	p. 101
Biot-Savart's Law	p. 102
Solenoid	p. 108
Surface and Volume Current Densities	p. 109
Ampere's Circuital Law	p. 112
Curl and the Point Form of Ampere's Circuital Law	p. 120
Stokes's Theorem	p. 123
Magnetic Flux Density	p. 124
Magnetic Forces	p. 126
Force on a Current Element	p. 127
Magnetic Torque and Moment	p. 132
Practical Application: Loudspeakers	p. 135
Magnetic Materials	p. 137
Boundary Conditions	p. 142
Inductance and Magnetic Energy	p. 145
Mutual Inductance	p. 148
Magnetic Energy	p. 150
Magnetic Circuits	p. 153
Electromagnets	p. 156
Practical Application: Maglev	p. 159
Summary	p. 160
Problems	p. 163
Dynamic Fields	p. 169
Current Continuity and Relaxation Time	p. 169
Wave Fundamentals	p. 171
Faraday's Law and Transformer EMF	p. 177
Transformer EMF	p. 179
Transformers	p. 183
Point Form of Faraday's Law	p. 184
Faraday's Law and Motional EMF	p. 184
Generators	p. 188
Displacement Current	p. 190
Maxwell's Equations	p. 193
Lossless TEM Waves	p. 194
Time-Harmonic Fields and Phasors	p. 200
Summary	p. 204
Problems	p. 205
Plane Waves	p. 209
General Wave Equations	p. 210
Time-Harmonic Wave Equations	p. 211
Propagating Fields Relation	p. 216
Propagation in Lossless, Charge-Free Media	p. 217
Propagation in Dielectrics	p. 219
Low-Loss Dielectrics	p. 220
Loss Tangent	p. 221
Propagation in Conductors	p. 223
Current in Conductors	p. 226
The Poynting Theorem and Power Transmission	p. 230
UPW Power Transmission	p. 232
Polarization	p. 235
Practical Application: Liquid Crystal Displays	p. 239
Reflection and Transmission at Normal Incidence	p. 240
General Case	p. 240
Standing Waves	p. 245
Reflection and Transmission at Oblique Incidence	p. 246
TE Polarization	p. 247
TM Polarization	p. 252
Summary	p. 254
Problems	p. 256
Applied Electromagnetics	p. 259
Transmission Lines	p. 261
Distributed-Parameter Model	p. 262
Telegraphist's Equations	p. 266
Time-Harmonic Waves on Transmission Lines	p. 267
Characteristic Impedance	p. 269
Lossless Line	p. 270
Power Transmission	p. 271
Terminated T-Lines	p. 274
Input Impedance	p. 276
Complex Loads	p. 278
The Complete Circuit	p. 278
The Smith Chart	p. 280
Smith Chart Derivation	p. 282
Using the Smith Chart	p. 287
Impedance Measurement	p. 291
Impedance Matching	p. 295
Quarter-Wave Transformer	p. 296
Matching with the Smith Chart	p. 297
Admittance of Shunt Stubs	p. 298
Shunt-Stub Matching	p. 300
Microstrip	p. 304
Attenuation	p. 310
Other Planar T-Lines	p. 311
Transients	p. 312
Pulse Response	p. 316
Practical Application: Schottky-Diode Terminations	p. 321
Reactive Loads	p. 321
Time-Domain Reflectometry	p. 324
Dispersion	p. 326
Summary	p. 331
Problems	p. 333
Waveguide	p. 338
Rectangular Waveguide Fundamentals	p. 339
Wave Propagation	p. 342
Waveguide Impedance	p. 346
Practical Application: Microwave Ovens	p. 348
Waveguide Field Equations	p. 350
TM Mode	p. 352
TE Mode	p. 357
Dielectric Waveguide	p. 361
TE Mode	p. 364
TM Mode	p. 365
Field Equations	p. 366
Optical Fiber	p. 369
Numerical Aperture	p. 372
Signal Degradation	p. 373
Attenuation	p. 374
Graded-Index Fiber	p. 374
Fiber Optic Communication Systems	p. 375
Optical Sources	p. 376
Optical Detectors	p. 378
Repeaters and Optical Amplifiers	p. 379
Connections	p. 381
Optical Link Design	p. 381
Power Budget	p. 382
Rise-Time Budget	p. 382
Summary	p. 385
Suggested References	p. 386
Problems	p. 386
Antennas	p. 388
General Properties	p. 390
Radiated Power	p. 390
Radiation Patterns	p. 391
Directivity	p. 393
Impedance and Efficiency	p. 397
A Commercial Antenna	p. 398
Electrically Short Antennas	p. 399
Vector Magnetic Potential	p. 399
The Hertzian Dipole	p. 402
The Small Loop Antenna	p. 405
Dipole Antennas	p. 407
Derivation of Fields	p. 408
Antenna Properties	p. 411
Half-Wave Dipole	p. 417
Monopole Antennas	p. 421
Image Theory	p. 421
Antenna Properties	p. 422
Practical Considerations	p. 424
Antenna Arrays	p. 424
Pair of Hertzian Dipoles	p. 427
N-Element Linear Arrays	p. 431
Parasitic Arrays	p. 434
The Friis Transmission Equation	p. 435
Polarization Effects	p. 439
Receiver Matching	p. 441
Radar	p. 442
Antennas for Wireless Communications	p. 444
Parabolic Reflectors	p. 445
Patch Antennas	p. 446
Slot Antennas	p. 447
Folded Dipole Antennas	p. 448
Summary	p. 448
Suggested References	p. 451
Problems	p. 451
Electromagnetic Interference	p. 455
Interference Sources	p. 456
Lightning	p. 456
Electrostatic Discharge	p. 456
Power Disturbance Sources	p. 457
Radio Transmitters	p. 458
Passive Circuit Elements	p. 459
Conductors	p. 459
Resistors	p. 461
Inductors	p. 465
Capacitors	p. 468
Digital Signals	p. 471
Grounds	p. 475
Bond Wires	p. 475
Signal Grounds	p. 476
Loop Area	p. 478
Shields	p. 479
Filters	p. 485
Reflective Filters	p. 485
Ferrite Chokes	p. 490
Summary	p. 491
Suggested References	p. 492
Problems	p. 492
Microwave Engineering	p. 494
Lumped-Element Matching Networks	p. 496
Scattering Parameters	p. 502
Reciprocal Networks	p. 506
Lossless Networks	p. 508
Return Loss and Insertion Loss	p. 509
Shift in Reference Plane	p. 510
The Vector Network Analyzer	p. 511
Couplers and Dividers	p. 512
Circulators	p. 513
Three-Port Dividers	p. 514
Couplers	p. 516
Filters	p. 521
Simple Filters	p. 523
Multisection Filters	p. 526
High-Pass Filters	p. 532
Bandpass Filters	p. 533
Amplifiers	p. 538
Designing Matching Networks	p. 541
Balanced Amplifiers	p. 547
Receiver Design	p. 547
Oscillators	p. 548
Mixers	p. 548
Microwave CAD	p. 550
Practical Application: Radio Frequency Identification	p. 551
Summary	p. 552
Suggested References	p. 554
Problems	p. 554
Vector Relations	p. 559
Coordinate System Transformations	p. 562
Complex Numbers	p. 566
Integrals, Conversions, and Constants	p. 568
Material Properties	p. 570
Answers to Selected Problems	p. 572
Index	p. 583
Table of Contents provided by Ingram. All Rights Reserved.

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