T. Bird – Fundamentals of Aperture Antennas and Arrays (2016)

Автор: T. Bird
Название книги: Fundamentals of Aperture Antennas and Arrays
Формат: PDF
Жанр: Приборостроение
Страницы: 449
Качество: Изначально компьютерное, E-book

This book is intended as an advanced text for courses in antennas, with a focus on the mature but vital background field of aperture antennas. The book is aimed at final year, MSc, PhD and Post–Doctoral students, as well as readers who are moving from academia into industry, beginning careers as wireless engineers, system designers, in R&D, or for practising engineers.
It assumes the reader has undertaken an earlier course of study on Maxwell′s equations, fields and waves. Some of these topics are summarised in the early few chapters in order to provide continuity and background for the remaining chapters. The aperture antennas covered include the main types of horns, reflectors and arrays as well as microstrip patches, reflectarrays and lenses. To provide more than a superficial treatment of arrays, the topic of mutual coupling is covered in greater detail than most similar books in the area. Also included is an introduction to arrays on non–planar surfaces, which is of importance for applications that involve curved surfaces such as in aerodynamics or for making aperture antennas unobtrusive. A chapter is included on some modern aperture antennas to illustrate design techniques beyond the most common types of aperture antennas described in the early chapters. This is to show where advances have recently been made and where they could be improved in the future. Also included are selected topics of a practical nature for aperture antennas, namely fabrication and measurement.
Introduction.
Background Theory.
Maxwell’s Equations for Time-Harmonic Fields.
Equivalent Sources.
Radiation.
Problems.
Fields Radiated by an Aperture.
Radiation Equations.
Near-Field Region.
Fresnel Zone.
Far-Field Region.
Radiation Characteristics.
Aberrations.
Power Coupling Theorem.
Field Analysis by High-Frequency Methods.
Problems.
Waveguide and Horn Antennas.
Introduction.
Radiation from Rectangular Waveguide.
Pyramidal Horn.
Circular Waveguides and Horns.
Advanced Horn Analysis Topics.
Problems.
Microstrip Patch Antenna.
Introduction.
Microstrip Patch Aperture Model.
Microstrip Patch on a Cylinder.
Problems.
Reflector Antennas.
Introduction.
Radiation from a Paraboloidal Reflector.
Focal Region Fields of a Paraboloidal Reflector.
Blockage.
Reflector Antenna Efficiency.
Reflector Surface Errors.
Offset-fed Parabolic Reflector.
Cassegrain Antenna.
Shaped Reflectors.
Problems.
Arrays of Aperture Antennas.
Introduction.
Two-Dimensional Planar Arrays.
Mutual Coupling in Aperture Antennas.
Techniques for Minimizing Effects of Mutual Coupling.
Low-Sidelobe Arrays and Shaped Beams.
Problems.
Conformal Arrays of Aperture Antennas.
Introduction.
Radiation from a Conformal Aperture Array.
Mutual Coupling in Conformal Arrays.
Coupling in a Concave Array: Periodic Solution.
Problems.
Reflectarrays and Other Aperture Antennas.
Introduction.
Basic Theory of Reflectarrays.
Extensions to the Basic Theory.
Other Aperture Antennas.
Problems.
Aperture Antennas in Application.
Fabrication.
Measurement and Testing.
Modern Aperture Antennas.
Problems.
Appendix A: Useful Identities.
A.1 Vector Identities.
A.2 Geometric Identities.
A.3 Transverse Representation of the Electromagnetic Field.
A.4 Useful Functions.
Appendix B: Bessel Functions.
B.1 Properties.
B.2 Computation of Bessel Functions.
Appendix C: Proof of Stationary Behaviour of Mutual Impedance.
Appendix D: Free-Space Dyadic Magnetic Green’s Function.
Appendix E: Complex Fresnel Integrals.
Appendix F: Properties of Hankel Transform Functions.
Appendix G: Properties of Fock Functions for Convex Surfaces.
G.1 Surface Fock Functions.
G.2 Acoustic Fock Functions.