Antennas and wave propagation

Antennas and wave propagation

Antennas and Wave Propagation is written for the first course on the same. The book begins with an introduction that discusses the fundamental concepts, notations, representation and principles that govern the field of antennas. A separate chapter on mathematical preliminaries is discussed followed...

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Detalles Bibliográficos
Otros Autores: Raju, G. S. N. Author (author)
Formato: Libro electrónico
Idioma:Inglés
Publicado: [Place of publication not identified] Pearson Education India 2004
Edición:1st edition
Materias:
Electrical & Computer Engineering
Engineering & Applied Sciences
Electrical Engineering
Ver en Biblioteca Universitat Ramon Llull:https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009627779606719
Tabla de Contenidos:
  • Cover
  • Preface
  • Acknowledgements
  • Brief Contents
  • Contents
  • Introduction
  • Frequency Spectrum of Electromagnetic Waves
  • Chapter 1: Mathematical Preliminaries
  • 1.1 Fundamentals of Scalars and Vectors
  • 1.2 Coordinate Systems
  • 1.2.1 Cartesian Coordinate System
  • 1.2.2 Cylindrical Coordinate System
  • 1.2.3 Spherical Coordinate System
  • 1.3 Del Operator
  • 1.4 Gradiant of a Scalar V
  • 1.5 Divergence of a Vector A
  • 1.6 Curl of a Vector A
  • 1.6.1 Vector Identities
  • 1.7 Laplacian Operator
  • 1.8 Dirac Delta
  • 1.9 Decibel and Neper Concepts
  • 1.10 Complex Numbers
  • 1.10.1 Properties of Complex Numbers
  • 1.11 Logarithmic Series and Identities
  • 1.12 Quadratic Equations
  • 1.13 Cubic Equations
  • 1.14 Determinants
  • 1.14.1 The Minor of Determinant
  • 1.14.2 Properties of Determinants
  • 1.15 Matrices
  • 1.15.1 Applications of Matrices
  • 1.15.2 Types of Matrices
  • 1.15.3 Properties of Matrices
  • 1.16 Factorial
  • 1.17 Permulations
  • 1.18 Combinations
  • 1.19 Basic Series
  • 1.20 Exponential Series
  • 1.21 Sine and Cosine Series
  • 1.22 Sinh and Cosh Series
  • 1.23 Hyperbolic Functions
  • 1.24 Sine, Cosine, Tan and Cot Functions
  • 1.25 Some Special Functions
  • 1.25.1 Gamma Function
  • 1.25.2 Beta Function
  • 1.25.3 Error Function
  • 1.25.4 Bessel Function
  • 1.25.5 Fresnel Integral
  • 1.25.6 Sine Integral
  • 1.25.7 Cosine Integral
  • 1.25.8 Exponential Integral
  • 1.25.9 Logarithmic Integral
  • 1.26 Partial Derivative
  • 1.27 Some Differentiation Formulae
  • 1.28 Some Useful Integration Formulae
  • 1.29 Radian and Steradian
  • 1.30 Integral Theorems
  • 1.30.1 Stokes' Theorem
  • 1.30.2 Divergence Theorem
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problem
  • Chapter 2: Maxwell's Equations and Electromagnetic Waves
  • 2.1 Introduction.
  • 2.2 Equation of Continuity for Time-Varying Fields
  • 2.3 Maxwell's Equations for Time-Varying Fields
  • 2.3.1 Meaning of Maxwell's Equations
  • 2.3.2 Conversion of Differential Form of Maxwell's Equations to Integral Form
  • 2.3.3 Maxwell's Equations for Static Fields
  • 2.3.4 Characteristics of Free Space
  • 2.3.5 Maxwell's Equation for Free Space
  • 2.3.6 Maxwell's Equations for Static Fields in Free Space
  • 2.3.7 Proof of Maxwell's Equations
  • 2.4 Sinusoidal Time-Varying Fields
  • 2.5 Maxwell's Equations in Phasor Form
  • 2.6 Influence of Medium on the Fields
  • 2.7 Summary of Maxwell's Equations for Different Cases
  • 2.8 Conditions at a Boundary Surface
  • 2.8.1 Proof of Boundary Conditions on E, D, H and B
  • 2.8.2 Boundary Conditions at a Glance
  • 2.8.3 Boundary Conditions in Scalar Form
  • 2.8.4 Boundary Conditions in Vector Form
  • 2.9 Time-Varying Potentials
  • 2.9.1 Heuristic Approach
  • 2.9.2 Maxwell's Equations Approach
  • 2.10 Electromagnetic Waves
  • 2.11 Applications of EM Waves
  • 2.12 Wave Equations in Free Space
  • 2.13 Wave Equations for a Conducting Medium
  • 2.14 Uniform Plane Wave Equation
  • 2.15 General Solution of Uniform Plane Wave Equation
  • 2.16 Relation Between E and H in A Uniform Plane Wave
  • 2.17 Wave Equations in Phasor Form
  • 2.18 Wave Propagation in a Lossless Medium
  • 2.18.1 The Wave Velocity
  • 2.19 Propagation Characteristics of EM Waves in Free Space
  • 2.20 Propagation Characteristics of EM Wave in a Conducting medium
  • 2.20.1 Expressions for α and β in a Conducting Medium
  • 2.21 Conductors and Dielectrics
  • 2.22 Wave Propagation Characteristics in Good Dielectrics
  • 2.22.1 Intrinsic or Characteristic Impedance of a General Medium, η
  • 2.23 Wave Propagation Characteristics in Good Conductors
  • 2.24 Depth of Penetration, δ (m )
  • 2.25 Polarisation of a Wave
  • 2.25.1 Types of Polarisations.
  • 2.25.2 Sources of Different Polarised EM Waves
  • 2.26 Direction Cosines of a Vector Field
  • 2.27 Waves on a Perfect Conductor-Normal Incidence
  • 2.27.1 Total Fields of a Wave at any Point after Reflection with Normal Incidence on a Perfect Conductor
  • 2.28 Waves on Dielectric-Normal Incidence
  • 2.29 Reflection of Wave from a Good Conductor with Oblique Incidence
  • 2.30 Reflection of a Wave from a Dielectric with Oblique Incidence
  • 2.31 Brewster Angle
  • 2.31.1 Total Internal Reflection
  • 2.32 Poynting Vector and Flow of Power
  • 2.32.1 Poynting Theorem
  • 2.33 Complex Polynting Vector
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problems
  • Chapter 3: Radiation and Antennas
  • 3.1 Introduction
  • 3.2 Definition of Antenna
  • 3.3 Functions of Antennas
  • 3.4 Network Theorems
  • 3.5 Properties of Antenna
  • 3.6 Antenna Parameters
  • 3.7 Basic Antenna Elements
  • 3.8 Radiation Mechanism
  • 3.9 Radiation Fields of Alternating Current Element (or Oscillating Electric Dipole)
  • 3.10 Radiated Power and Radiation Resistance of Current Element
  • 3.11 Radiation, Induction and Electrostatic Fields
  • 3.12 Herizian Dipole
  • 3.13 Different Current Distributions in Linear Antennas
  • 3.14 Radiation from Half-wave Dipole
  • 3.15 Radiation from Quarter-wave Monopole
  • 3.16 Radiation Characteristics of Dipoles
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problems
  • Chapter 4: Analysis of Linear Arrays
  • 4.1 Introduction
  • 4.2 Directional Characteristics of Dipole Antennas
  • 4.3 Radiation Pattern of Alternating Current Element
  • 4.4 Radiation Pattern Expressions of Centre-fed Vertical Dipoles of Finite Length
  • 4.5 Radiation Patterns of Centre-fed Vertical Dipoles
  • 4.6 Radiation Patterns of Centre-fed Horizontal Dipoles of Finite Length
  • 4.7 Radiation Patterns of Vertical Monopoles.
  • 4.8 Two-Element Uniform Array
  • 4.9 Uniform Linear Arrays
  • 4.10 Field Strength of a Uniform Linear Array
  • 4.11 First Side Lobe Ratio (SLR)
  • 4.12 Broadside and End-fire Arrays
  • 4.13 Patterns of Array of Non-isotropic Radiators
  • 4.14 Multiplication of Patterns
  • 4.15 Generalised Expression of Principle of Pattern Multiplication
  • 4.16 Radiation Pattern Characteristics
  • 4.17 Binomial Arrays
  • 4.18 Effect of Earth on Vertical Patterns
  • 4.19 Effect of Earth on Radiation Resistance
  • 4.20 Methods of Excitation of Antennas
  • 4.21 Impedance Matching Techniques
  • 4.22 Transmission Loss between Transmitting and Receiving Antennas (Friis Formula)
  • 4.23 Antenna Temperature and Signal-to-noise Ratio
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problems
  • Chapter 5: Array Synthesis
  • 5.1 Introduction
  • 5.2 Synthesis Methods
  • 5.3 Schelkunoff Polynomial Method
  • 5.4 Fourier Transform Method
  • 5.5 Line Source Design by Fourier Transform Method
  • 5.6 Design of Linear Array by Fourier Transform Method
  • 5.7 Linear Array Design by Woodward-Lawson Method
  • 5.8 Dolph-Chebychev Method (Tschebyscheff Distribution)
  • 5.9 Determination of Dolph-Chebychev Amplitude Distribution
  • 5.10 Advantages of Dolph-Tschebyscheff Method
  • 5.11 Taylor's Method
  • 5.12 Laplace Transform Method
  • 5.13 Standard Amplitude Distributions
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problems
  • Chapter 6: HF, VHF and UHF Antennas
  • 6.1 Introduction
  • 6.2 Isotropic Radiators
  • 6.3 Directional Antennas
  • 6.4 Omni-directional Antenna
  • 6.5 Resonant Antennas
  • 6.6 Non-resonant Antennas (Travelling Wave Antennas)
  • 6.7 LF Antennas
  • 6.8 Antennas for HF, VHF, UHF
  • 6.9 Dipole Arrays
  • 6.10 Broadside Array
  • 6.11 End-fire Array
  • 6.12 Folded Dipole
  • 6.13 V-Antenna
  • 6.14 Inverted V-Antenna.
  • 6.15 Rhombic Antenna
  • 6.16 Yagi-Uda Antenna
  • 6.17 Log-periodic Antennas
  • 6.18 Loop Antenna
  • 6.18.1 Radiation Resistance, Rr of Loop Antenna
  • 6.19 Helical Antenna
  • 6.20 Whip Antenna
  • 6.21 Ferrite Rod Antenna
  • 6.22 Turnstile Antenna
  • 6.23 Discone Antenna
  • 6.24 Notch Antenna
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problems
  • Chapter 7: Microwaves Antennas
  • 7.1 Introduction
  • 7.2 Rod Reflector
  • 7.3 Plane Reflector
  • 7.4 Corner Reflector
  • 7.5 Parabolic Reflector
  • 7.6 Types of Parabolic Reflectors
  • 7.6.1 Cut or Truncated Paraboloid
  • 7.6.2 Parabolic Cylinder
  • 7.6.3 Pillbox Antenna
  • 7.6.4 Offset Paraboliod
  • 7.6.5 Torus Antenna
  • 7.7 Feed Systems for Parabolic Reflectors
  • 7.7.1 Half-Wave Dipole Feed
  • 7.7.2 Yagi-Uda Antenna Feed
  • 7.7.3 Array of Collinear Dipoles Feed
  • 7.7.4 Centre-fed with Spherical Reflector
  • 7.7.5 Horn Feed
  • 7.7.6 Cassegrain Feed
  • 7.8 Shaped Beam Antennas
  • 7.8.1 Fanned Beams
  • 7.8.2 Sector Beam
  • 7.8.3 Cosecant Beams
  • 7.9 Horn Antenna
  • 7.10 Corrugated Horns
  • 7.11 Slot Antenna
  • 7.12 Impedance of Slot Antenna
  • 7.13 Impedance of a Few Typical Dipoles
  • 7.14 Slots in the Walls of Rectangular Waveguide
  • 7.15 Babinet's Principle
  • 7.16 The Method of Moment (MOM)
  • 7.17 Lens Antenna
  • 7.17.1 Types of Lens Antennas
  • 7.18 Equation of the Shape of Lens
  • 7.19 Microstrip or Patch Antennas
  • Points to Remember
  • Solved Problems
  • Objective Questions
  • Exercise Problems
  • Chapter 8: Antenna Measurements
  • 8.1 Introduction
  • 8.2 Drawbacks in Measurements of Antenna Parameters
  • 8.3 Methods to Overcome Drawbacks in Measurements
  • 8.4 Some Methods for Accurate Measurements
  • 8.5 Measurement Ranges
  • 8.6 Differences between Indoor and Outdoor Ranges
  • 8.7 Antenna Impedance Measurement
  • 8.8 Measurement of Antenna Pattern.
  • 8.9 Measurement of Radiation Resistance of an Antenna.

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