TRANSMISSION LINES AND WAVEGUIDES Theory, Analysis and Design of Guided-Wave Structures: from Telegrapher's Equations to Microwave Networks and Optical Fibres
English | September 29, 2026 | ASIN: B0HLGKTD1B | 342 pages | Epub | 11.62 MB
Every wireless call, every high-speed data link inside a computer, every radar echo and every pulse of light racing through an undersea cable depends on one idea: electromagnetic energy can be guided. Transmission lines and waveguides are the structures that do the guiding, and a working knowledge of them is the foundation on which microwave engineering, antenna design, high-speed digital design, radar, satellite communication and photonics are built. This book has been written to give students and practising engineers that foundation in a single, coherent and readable volume.The treatment begins where most students begin: with circuits. Chapter 1 explains why ordinary circuit theory fails when the dimensions of a circuit become comparable with the wavelength, and reviews the electromagnetic tools needed for the rest of the book. Chapters 2 to 6 develop transmission-line theory from the telegrapher's equations, through reflections, standing waves and the Smith chart, to impedance matching and time-domain transients. Chapter 7 applies this theory to the planar lines found on every printed circuit board and integrated circuit. Chapters 8 to 11 move from circuit quantities to fields and develop the theory of guided waves in parallel-plate, rectangular, circular and dielectric guides, including optical fibres. Chapter 12 treats cavity and planar resonators, Chapter 13 introduces the scattering-parameter description of microwave networks and the passive components built from lines and guides, and Chapter 14 shows how filters are designed from lumped prototypes and realised with lines, coupled lines and resonators. Chapter 15 closes with measurement techniques and numerical methods. Three appendices collect the constants, material data and mathematical relations used throughout, together with answers to selected problems.Several features have been included to make the material easier to learn and more enjoyable to use:• Complete derivations are given for every important result, so that the reader sees not only what is true but why it is true.• A large number of worked examples demonstrate how the theory is applied to realistic numbers and practical design problems.• Carefully drawn figures, circuit diagrams, field plots and Smith charts make the physics visible.• Tables summarise formulas, standard components and material properties for quick reference.• Short Python programs show how modern engineers compute, plot and design; every listing runs with only NumPy and Matplotlib.• Each chapter ends with a summary, a set of graded problems and a mini project that ties the ideas together in a hands-on task.The book assumes a first course in electromagnetics, circuit analysis and calculus, including complex numbers and phasors. It is suitable for a one-semester undergraduate course in transmission lines and waveguides (Chapters 1 to 9 and selected parts of Chapters 12 to 14) or for a first-year graduate course in guided-wave theory (the whole book). Readers studying on their own will find the examples, programs and projects particularly useful for checking their understanding.