Antennas discusses the basics of modern antenna design and theory.
Antennas offers practical and hands-on treatment of antenna theory and techniques, and provides 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 industry
Contents
1. A Short History of Antennas
2. Radio Systems and Antennas
3. Necessary Mathematics
- Complex Numbers
- Vectors and Vector Operation
- Coordinates
- Basics of Electromagnetics
- Electric Field
- Magnetic Field
- Maxwell’s Equations
- Boundary Conditions
Circuit Concepts and Transmission Lines
1. Circuit Concepts
- Lumped and Distributed Element Systems
2. Transmission Line Theory
- Transmission Line Model
- Solutions and Analysis
- Terminated Transmission Line
3. The Smith Chart and Impedance Matching
- The Smith Chart
- Impedance Matching
- Quality Factor and Bandwidth
4. Various Transmission Lines
- Two-wire Transmission Line
- Coaxial Cable
- Microstrip Line
- Stripline
- Co-planar Waveguide (CPW)
- Waveguide
5. Connectors
Field Concepts and Radiowaves
1. Wave Equation and Solutions
- Discussion on Wave Solutions
2. Plane Wave, Intrinsic Impedance and Polarisation
- Plane Wave and Intrinsic Impedance
- Polarisation
3. Radiowave Propagation Mechanisms
- Reflection and Transmission
- Diffraction and Huygens’ Principle
- Scattering
4. Radiowave Propagation Characteristics in Media
- Media Classification and Attenuation
5. Radiowave Propagation Models
- Free Space Model
- Two-ray Model/Plane Earth Model
- Multipath Models
6. Comparison of Circuit Concepts and Field Concepts
Antenna Basics 125
1. Antennas to Radiowaves
- Near Field and Far Field
- Antenna Parameters from the Field Point of View
2. Antennas to Transmission Lines
- Antenna Parameters from the Circuit Point of View
Popular Antennas
1. Wire-Type Antennas
- Dipoles
- Monopoles and Image Theory
- Loops and Duality Principle
- Helical Antennas
- Yagi-Uda Antennas
- Log-periodic Antennas and Frequency Independent Antennas
2. Aperture-Type Antennas
- Fourier Transform and Radiated Field
- Horn Antennas
- Reflector and Lens Antennas
- Slot Antennas and Babinet’s Principle
- Microstrip Antennas
3. Antenna arrays
- Isotropic Linear Arrays
- Pattern Multiplication Principle
- Element Mutual Coupling
4. Some Practical Considerations
- Transmitting and Receiving Antennas: Reciprocity
- Balun and Impedance Matching
- Antenna Polarisation
- Radomes, Housings and Supporting Structures
Computer Aided Antenna Design and Analysis
1. 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
2. Examples of Computer Aided Design and Analysis
- Wire-type Antenna Design and Analysis
- General Antenna Design and Analysis
Antenna Manufacturing and Measurements
1. Antenna Manufacturing
- Conducting Materials
- Dielectric Materials
- New Materials for Antennas
2. Antenna Measurement Basics
- Scattering Parameters
- Network Analysers
3. Impedance, S11, VSWR, and Return Loss
4. 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
5. Gain Measurements
- Comparison with a Standard-gain Horn
- Two-antenna Measurement
- Three-antenna Measurement
6. Miscellaneous Topics
- Efficiency Measurements
- Reverberation Chambers
- Impedance De-embedding Techniques
- Probe Array in Near Field Systems
Special Topics
1. Electrically Small Antennas
- The Basics and Impedance Bandwidth
- Antenna size reduction techniques
2. Mobile Antennas, Antenna Diversity and Human Body Effects
- Mobile Antennas
- Antenna Diversity
- User Interaction
3. Multi-band and Ultra Wideband Antennas
- Multi-band Antennas
- Wideband Antennas
4. RFID Antennas
- Near Field Systems
- Far Field Systems
5. Reconfigurable Antennas
- Switch and Variable Component Technologies
- Resonant Mode Switching/Tuning
- Feed Network Switching/tuning
- Mechanical Reconfiguration
Index
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