Theory Of Waveguides And Transmission Lines

This book covers the principles of operation of electromagnetic waveguides and transmission lines. The approach is divided between mathematical descriptions of basic behaviors and treatment of specific types of waveguide structures. Classical (distributed-network) transmission lines, their basic properties, their connection to lumped-element networks, and the distortion of pulses are discussed followed by a full field analysis of waveguide modes. Modes of specific kinds of waveguides - traditional hollow metallic waveguides, dielectric (including optical) waveguides, etc. are discussed. Problems of excitation and scattering of waveguide modes are addressed, followed by discussion of real systems and performance.

Transmission Lines and Wave Propagation, Fourth Edition helps readers develop a thorough understanding of transmission line behavior, as well as their advantages and limitations. Developments in research, programs, and concepts since the first edition presented a demand for a version that reflected these advances. Extensively revised, the fourth edition of this bestselling text does just that, offering additional formulas and expanded discussions and references, in addition to a chapter on coupled transmission lines. What Makes This Text So Popular? The first part of the book explores distributed-circuit theory and presents practical applications. Using observable behavior, such as travel time, attenuation, distortion, and reflection from terminations, it analyzes signals and energy traveling on transmission lines at finite velocities. The remainder of the book reviews the principles of electromagnetic field theory, then applies Maxwell's equations for time-varying electromagnetic fields to coaxial and parallel conductor lines, as well as rectangular, circular, and elliptical cylindrical hollow metallic waveguides, and fiber-optic cables. This progressive organization and expanded coverage make this an invaluable reference. With its analysis of coupled lines, it is perfect as a text for undergraduate courses, while graduate students will appreciate it as an excellent source of extensive reference material. This Edition Includes: An overview of fiber optic cables emphasizing the principle types, their propagating modes, and dispersion Discussion of the role of total internal reflection at the core/cladding interface, and the specific application of boundary conditions to a circularly symmetrical propagating mode A chapter on coupled transmission lines, including coupled-line network analysis and basic crosstalk study More information on pulse propagation on lines with skin-effect losses A freeware program available online Solutions manual available with qualifying course adoption

Transmission Line Theory Different types of transmission lines, Definition of characteristic impedance, The transmission line as a cascade of T-Sections, Definition of propagation constant.General solution of the transmission line, The two standard forms for voltage and current of a line terminated by an impedance, Physical significance of the equation and the infinite line, The two standard forms for the input impedance of a transmission line terminated by an impedance, Meaning of reflection coefficient, Wavelength and velocity of propagation.Waveform distortion, Distortionless transmission line, The telephone cable, Inductance loading of telephone cables.Input impedance of lossless lines, Reflection on a line not terminated by Z0, Transfer impedance, Reflection factor and reflection loss, T and section equivalent to lines. The Line at Radio Frequencies Standing waves and standing wave ratio on a line, One eighth wave line, The quarter wave line and impedance matching, The half wave line.The circle diagram for the dissipationless line, The Smith chart, Application of the Smith chart, Conversion from impedance to reflection coefficient and vice-versa. Impedance to admittance conversion and viceversa, Input impedance of a lossless line terminated by an impedance, Single stub matching and double stub matching.Guided Waves Waves between parallel planes of perfect conductors, Transverse electric and transverse magnetic waves, Characteristics of TE and TM Waves, Transverse electromagnetic waves, Velocities of propagation, Component uniform plane waves between parallel planes, Attenuation of TE and TM waves in parallel plane guides, Wave impedances.Rectangular Waveguides Transverse magnetic waves in rectangular wave guides, Transverse electric waves in rectangular waveguides, Characteristic of TE and TM waves, Cut-off wavelength and phase velocity, Impossibility of TEM waves in waveguides, Dominant mode in rectangular waveguide, Attenuation of TE and TM modes in rectangular waveguides, Wave impedances, Characteristic impedance, Excitation of modes.Circular Wave Guides and Resonators Bessel functions, Solution of field equations in cylindrical co-ordinates, TM and TE waves in circular guides, Wave impedances and characteristic impedance, Dominant mode in circular waveguide, Excitation of modes, Microwave cavities, Rectangular cavity resonators, Circular cavity resonator, Semicircular cavity resonator, Q factor of a cavity resonator for TE101 mode.

This monograph deals with the theoretical aspects of the circuit modelling of high-frequency electromagnetic structures using the Lorentz reciprocity theorem. This is the first book to cover the generalization from closed structures to open-boundary waveguides and circuit structures. The author has developed a new way to represent a general waveguide by transmission lines: and was awarded the Microwave Prize of the IEEE for this work. The first part of the book discusses the construction of transmission line models for waveguide structures. Then the incidence of external electromagnetic waves on high-frequency structures is studied, and finally the concepts derived in the earlier parts of the book are generalized to reciprocal and non-reciprocal anisotropic, bi-isotropic, and bianisotropic materials.

Electromagnetic Field Theory and Transmission Lines is an ideal textbook for a single semester, first course on Electromagnetic Field Theory (EMFT) at the undergraduate level. This book uses plain and simple English, diagrammatic representations and real life examples to explain the fundamental concepts, notations, representation and principles that govern the field of EMFT. The chapters cover every aspect of EMFT from electrostatics to advanced topics dealing with Electromagnetic Interference (EMI)/Electromagnetic Compatibility (EMC), EMC standards and design methods for EMC. Careful and deta.

This rigorous treatment of transmission lines presents all the essential concepts in a clear and straightforward manner. Key principles are demonstrated by numerous practical worked examples and illustrations, and complex mathematics is avoided throughout. Early chapters cover pulse propagation, sinusoidal waves and coupled lines, all set within the context of a simple lossless equivalent circuit. Later chapters then develop this basic model by demonstrating the derivation of circuit parameters, and the use of Maxwell's equations to extend this theory to major transmission lines. Finally, a discussion of photonic concepts and properties provides valuable insights into the fundamental physics underpinning transmission lines. Covering DC to optical frequencies, this accessible text is an invaluable resource for students, researchers and professionals in electrical, RF and microwave engineering.