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9780470772928

Antennas: From Theory to Practice

by ;
  • ISBN13:

    9780470772928

  • ISBN10:

    0470772921

  • Format: eBook
  • Copyright: 2008-11-01
  • Publisher: Wiley
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Summary

Practical, concise and complete reference for the basics of modern antenna designAntennas: from Theory to Practice discusses the basics of modern antenna design and theory. Developed specifically for engineers and designers who work with radio communications, radar and RF engineering, this book offers practical and hands-on treatment of antenna theory and techniques, and provides its readers the skills to analyse, design and measure various antennas.Key features:Provides thorough coverage on the basics of transmission lines, radio waves and propagation, and antenna analysis and design Discusses industrial standard design software tools, and antenna measurement equipment, facilities and techniques Covers electrically small antennas, mobile antennas, UWB antennas and new materials for antennas Also discusses reconfigurable antennas, RFID antennas, Wide-band and multi-band antennas, radar antennas, and MIMO antennas Design examples of various antennas are provided Written in a practical and concise manner by authors who are experts in antenna design, with experience from both academia and industryThis book will be an invaluable resource for engineers and designers working in RF engineering, radar and radio communications, seeking a comprehensive and practical introduction to the basics of antenna design. The book can also be used as a textbook for advanced students entering a profession in this field.

Table of Contents

Preface
List of Symbols
Introduction.
A Short History of Antennas
Radio Systems and Antennas
Necessary Mathematics
Complex Numbers
Vectors and Vector Operation
Coordinates
Basics of Electromagnetics
Electric Field
Magnetic Field
MaxwellÆs Equations
Boundary Conditions
Summary
References
Problems
Circuit Concepts and Transmission Lines.
Circuit Concepts
Lumped and Distributed Element Systems
Transmission Line Theory
Transmission Line Model
Solutions and Analysis
Terminated Transmission Line
The Smith Chart and Impedance Matching
The Smith Chart
Impedance Matching
Quality Factor and Bandwidth
Various Transmission Lines
Two-wire Transmission Line
Coaxial Cable
Microstrip Line
Stripline
Co-planar Waveguide (CPW)
Waveguide
Connectors
Summary
References
Problems
Field Concepts and Radiowaves.
Wave Equation and Solutions
Discussion on Wave Solutions
Plane Wave, Intrinsic Impedance and Polarisation
Plane Wave and Intrinsic Impedance
Polarisation
Radiowave Propagation Mechanisms
Reflection and Transmission
Diffraction and HuygensÆ Principle
Scattering
Radiowave Propagation Characteristics in Media
Media Classification and Attenuation
Radiowave Propagation Models
Free Space Model
Two-ray Model/Plane Earth Model
Multipath Models
Comparison of Circuit Concepts and Field Concepts
Skin Depth
Summary
References
Problems
Antenna Basics 125.
Antennas to Radiowaves
Near Field and Far Field
Antenna Parameters from the Field Point of View
Antennas to Transmission Lines
Antenna Parameters from the Circuit Point of View
Summary
References
Problems
Popular Antennas.
Wire-Type Antennas
Dipoles
Monopoles and Image Theory
Loops and Duality Principle
Helical Antennas
Yagi-Uda Antennas
Log-periodic Antennas and Frequency Independent Antennas
Aperture-Type Antennas
Fourier Transform and Radiated Field
Horn Antennas
Reflector and Lens Antennas
Microstrip Antennas
Antenna arrays
Basic Concept
Isotropic Linear Arrays
Pattern Multiplication Principle
Element Mutual Coupling
Some Practical Considerations
Transmitting and Receiving Antennas: Reciprocity
Balun and Impedance Matching
Antenna Polarisation
Radomes, Housings and Supporting Structures
Summary
References
Problems
Computer Aided Antenna Design and Analysis.
Introduction
Computational Electromagnetics for Antennas
Method of Moments (MoM)
Finite Element Method (FEM)
Finite Difference Time Domain (FDTD) Method
Transmission Line Modelling (TLM) Method
Comparison of Numerical Methods
High Frequency Methods
Examples of Computer Aided Design and Analysis
Wire-type Antenna Design and Analysis
General Antenna Design and Analysis
Summary
References
Problems
Antenna Manufacturing and Measurements.
Antenna Manufacturing
Conducting Materials
Dielectric Materials
New Materials for Antennas
Antenna Measurement Basics
Scattering Parameters
Network Analysers
Impedance, S11, VSWR, and Return Loss
Radiation Pattern Measurements
Open Area Test Sites (OATS)
Anechoic Chambers
Compact Antenna Test Ranges (CATR)
Planar and Cylindrical Near Field Chambers
Spherical Near Field Chambers
Gain Measurements
Comparison with a Standard-gain Horn
Two-antenna Measurement
Three-antenna Measurement
Miscellaneous Topics
Efficiency Measurements
Reverberation Chambers
Impedance De-embedding Techniques
Probe Array in Near Field Systems
Summary
References
Problems
Special Topics.
Electrically Small Antennas
The Basics and Impedance Bandwidth
Introduction
Slope Parameters
Impedance Bandwidth
Fundamental Limits of Antenna Size, Q and Efficiency
The Limits of Bandwidth Broadening
Discussions and Conclusions
Antenna size reduction techniques
Top Loading
Matching
Reactive Loading
Dielectric Loading
Mobile Antennas, Antenna Diversity and Human Body Effects
Introduction
Mobile Antennas
The Cellular Frequency Bands
The "Connectivity" Frequency Bands
Typical Antenna Types
Monopoles
Helical Antennas
Monopole-Like Antennas
Planar Inverted F Antennas
The Effect of the PCB
Specific Absorption Rate (SAR)
Multipath and Mean Effective Gain
Antenna Diversity
De-correlation Methods
a)
b)
c)
Combining Methods
a)
b)
c)
d)
The Effect of Branch Correlation
The Effect of Unequal Branch Powers
Examples of Diversity Antennas
MIMO Antennas
User Interaction
Introduction
Body Materials
Typical Losses
Multi-band and Ultra Wideband Antennas
Introduction
Multi-band Antennas
Techniques
Higher Order Resonances
Resonant Traps
Combined Resonant Structures
Parasitic Resonators
Examples
Wideband Antennas
RFID Antennas
Introduction
Near Field Systems
Far Field Systems
Reconfigurable Antennas
Introduction
Switch and Variable Component Technologies
Resonant Mode Switching/Tuning
Feed Network Switching/tuning
Mechanical Reconfiguration
Summary
References
Appendix
Industry Standard Coaxial Cables
Connectors
Selection of Antenna Simulation Software on the Market
Table of Contents provided by Publisher. All Rights Reserved.

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