Riassunto
Transmission Lines and Wave Propagation, 3rd Edition addresses this broad topic as a text for upper division students in electrical engineering. It contains a wealth of information that makes it an essential reference volume for libraries and professionals. The book covers major topics such as the velocity characteristic and related observable behavior (e.g., attenuation, distortion, and reflection) from terminations as correlated by means of distributed-circuit theory; dynamic field theory; and applications of Maxwell's equations to transmission lines and rectangular, circular, and elliptical cylindrical waveguides. The numerical results of derived formulas are reinforced through charts, tables, and diagrams, such as plots of voltage and current versus time, lattice, Bergeron and phasor diagrams, standing-wave plots, nomographic charts, and vector-field patterns. Transmission Lines and Wave Propagation, 3rd Edition contains several changes over the previous edition. These changes include additional material on the Bergeron graphical analysis of reflection behavior, the ABCD transmission matrix, earth currents and formulas for the impedence of ground-return circuits, and a descriptive treatment of the elliptical cylindrical waveguide. The first chapter has been expanded to emphasize the dependence of the line parameters on frequency and temperature.
Contenuti
PREFACE. INTRODUCTION. Transmission Systems: General Comments. The Circuit-Theory Approach to Transmission-Line Analysis. Traveling-Wave Fields-Lines and Waveguides. Closure. WAVE PROPAGATION ON AN INFINITE LOSSLESS LINE. Partial Differential Equations of Lossless Line. Traveling-Wave Solutions to the Wave Equation. STEP-FUNCTION WAVES ON A TERMINATED LOSSLESS LINE. Boundary Conditions and Reflection Process. Responses of Single-Section Lines. Reflections on Lines with Discontinuities or Branches. SINUSOIDAL TRAVELING WAVES ON A LOSSY LINE. Mathematical Solution for Traveling-Wave Properties. Phasor Notation for Traveling-Wave Functions. Propagation Characteristics as Functions of Frequency. WAVE DISTORTION ON LOSSY LINES-STEP-FUNCTION SOURCE. Transforms of Voltage and Current on a Lossy Line. Operational Parameters-First-Order Skin-Effect Approximation. Response on Semi-Infinite Line with Zero Source Impedance. Semi-Infinite Line, Nonzero Source Resistance. SINUSOIDAL VOLTAGES AND CURRENTS ON A TERMINATED LINE-STANDING WAVES. Incident and Reflected Wave Functions. Limiting-Case Reflection Situations. Standing-Wave Ratio. Resultant Standing-Wave Phasors-Hyperbolic Functions. Lumped-Impedance Discontinuities. IMPEDANCE, ADMITTANCE, AND THE SMITH CHART. Input Impedance: General. Limiting-Case Input Impedances. Line Parameters as Functions of Open-Circuit and Short-Circuit Impedances. Lossless Line: Impedance Function and Standing-Wave Ratio. Nomographic Chart for Impedance Calculations. Some Applications of the Smith Chart. THE LADDER-NETWORK DELAY LINE OR ARTIFICIAL LINE. Symmetrical Networks: General Properties. The Lumped-Parameter Delay Line as a Low-Pass Filter. Step-Function Response of Ladder-Network Delay Line. ELECTROMAGNETIC FIELDS AND MAXWELL'S EQUATIONS. An Overview of Classical Electromagnetics. Reduction of Field Equations to Differential Form. PLANE ELECTROMAGNETIC WAVES. Sinusoidal Traveling-Wave Fields in Infinite Medium. Reflection and Refraction at Normal Incidence. Reflection at Oblique Incidence. Plane Waves Traveling Parallel to Highly Conducting Surfaces. GUIDED FIELDS: ARRAYS OF TWO OR MORE CONDUCTORS. Coaxial Line. Circular-Wire Parallel Pair. Image-Conductor Analysis of Ground Planes and Shields. Transmission Modes of Multiconductor Systems. Some Electromagnetic Properties of Practical Lines. FIELDS IN HOLLOW RECTANGULAR WAVEGUIDES. TEm0 Propagating Modes. Dominant-Mode Standing Waves-Waveguide Impedances. General Solution for TE and TM Modes. Evanescent Modes and General Discontinuities. Velocities and Signal Propagation. Attenuation of TE10 Propagating Mode. FIELDS IN HOLLOW CYLINDRICAL WAVEGUIDES. Solution of Maxwell's Equations in Cylindrical Coordinates. Propagation Modes in Hollow Circular Waveguide. Parasitic Propagating Modes in Coaxial Cable. Elliptical Cylindrical Waveguides. SKIN EFFECT IN COAXIAL CONDUCTORS. Conduction-Current-Density Field. Magnetic Field within Conducting Regions. Impedance Component Due to Finite Conductivity. Thin-Walled Outer Conductor. APPENDIX A: VECTOR ANALYSIS-DEFINITIONS AND FORMULAS. Vector Operations and Functions. Coordinate Systems and Component Resolution. APPENDIX B: BESSEL FUNCTIONS. Independent Variable Real. Independent Variable Purely Imaginary. Independent Variable Complex. APPENDIX C: PARALLEL-SLAB EQUIVALENT OF SLOTTED COAXIAL LINE. Slotted Lines: General. Conformal Transformations: Basic Properties. Transformation Function for Coaxial Line. APPENDIX D: EARTH CURRENTS AND DISTRIBUTED IMPEDANCES. Earth-Current Characteristics. Distributed Impedances of Ground-Return Circuits. APPENDIX E: LOW-TEMPERATURE IMPEDANCE EFFECTS. Superconductivity. Anomalous Skin Effect. APPENDIX F: TABLE OF PHYSICAL CONSTANTS. AUTHOR INDEX. SUBJECT INDEX.
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