Informationen zum Autor Constantine A. Balanis received his BSEE degree from the Virginia Tech in 1964, his MEE degree from the University of Virginia in 1966, his PhD in Electrical Engineering from The Ohio State University in 1969, and an Honorary Doctorate from the Aristotle University of Thessaloniki in 2004. From 1964 to 1970, he was with the NASA Langley Research Center in Hampton, VA, and from 1970 to 1983, he was with the Department of Electrical Engineering of West Virginia University. In 1983 he joined Arizona State University and is now Regents' Professor of Electrical Engineering. Dr. Balanis is also a life fellow of the IEEE. Klappentext This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. Due to the variety of methods of analysis and design, and the different antenna structures available, the applications covered in this book are made to some of the most basic and practical antenna configurations. Among these antenna configurations are linear dipoles; loops; arrays; broadband antennas; aperture antennas; horns; microstrip antennas; and reflector antennas. The text contains sufficient mathematical detail to enable undergraduate and beginning graduate students in electrical engineering and physics to follow the flow of analysis and design. Readers should have a basic knowledge of undergraduate electromagnetic theory, including Maxwell's equations and the wave equation, introductory physics, and differential and integral calculus. Zusammenfassung Updated with color and gray scale illustrations, a companion website housing supplementary material, and new sections covering recent developments in antenna analysis and design This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. Inhaltsverzeichnis Preface xiii About the Companion Website xix 1 Antennas 1 1.1 Introduction 1 1.2 Types of Antennas 3 1.3 Radiation Mechanism 7 1.4 Current Distribution on a Thin Wire Antenna 15 1.5 Historical Advancement 18 1.6 Multimedia 21 References 22 2 Fundamental Parameters and Figures-of-Merit of Antennas 25 2.1 Introduction 25 2.2 Radiation Pattern 25 2.3 Radiation Power Density 35 2.4 Radiation Intensity 37 2.5 Beamwidth 40 2.6 Directivity 41 2.7 Numerical Techniques 55 2.8 Antenna Efficiency 60 2.9 Gain, Realized Gain 61 2.10 Beam Efficiency 65 2.11 Bandwidth 65 2.12 Polarization 66 2.13 Input Impedance 75 2.14 Antenna Radiation Efficiency 79 2.15 Antenna Vector Effective Length and Equivalent Areas 81 2.16 Maximum Directivity and Maximum Effective Area 86 2.17 Friis Transmission Equation and Radar Range Equation 88 2.18 Antenna Temperature 96 2.19 Multimedia 100 References 103 Problems 105 3 Radiation Integrals and Auxiliary Potential Functions 127 3.1 Introduction 127 3.2 The Vector Potential A for an Electric Current Source J 128 3.3 The Vector Potential F for A magnetic Current Source m 130 3.4 Electric and Magnetic Fields for Electric (J) and Magnetic (M) Current Sources 131 3.5 Solution of the Inhomogeneous Vector Potential Wave Equation 132 3.6 Far-Field Radiation 136 3.7 Duality Theorem 137 3.8 Reciprocity and Reaction Theorems 138 References 143 Problems 143 4 Linear Wire Antennas 145 4.1 Introduction 145 4.2 Infinitesimal Dipole 145 4.3 Small Dipole 155 4.4 Region Separation 158 4.5 Finite Length Dipole 164 4.6 Half-Wavelength Dipole 176 4.7 Linear Elements Near or On Infinite Perfect Electric Conductors (PEC)...

Autorentext

Constantine A. Balanis received his BSEE degree from the Virginia Tech in 1964, his MEE degree from the University of Virginia in 1966, his PhD in Electrical Engineering from The Ohio State University in 1969, and an Honorary Doctorate from the Aristotle University of Thessaloniki in 2004. From 1964 to 1970, he was with the NASA Langley Research Center in Hampton, VA, and from 1970 to 1983, he was with the Department of Electrical Engineering of West Virginia University. In 1983 he joined Arizona State University and is now Regents' Professor of Electrical Engineering. Dr. Balanis is also a life fellow of the IEEE.

Klappentext

This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. Due to the variety of methods of analysis and design, and the different antenna structures available, the applications covered in this book are made to some of the most basic and practical antenna configurations. Among these antenna configurations are linear dipoles; loops; arrays; broadband antennas; aperture antennas; horns; microstrip antennas; and reflector antennas. The text contains sufficient mathematical detail to enable undergraduate and beginning graduate students in electrical engineering and physics to follow the flow of analysis and design. Readers should have a basic knowledge of undergraduate electromagnetic theory, including Maxwell's equations and the wave equation, introductory physics, and differential and integral calculus.

Zusammenfassung
Updated with color and gray scale illustrations, a companion website housing supplementary material, and new sections covering recent developments in antenna analysis and design This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas.

Inhalt

Preface xiii

About the Companion Website xix

1 Antennas 1

1.1 Introduction 1

1.2 Types of Antennas 3

1.3 Radiation Mechanism 7

1.4 Current Distribution on a Thin Wire Antenna 15

1.5 Historical Advancement 18

1.6 Multimedia 21

References 22

2 Fundamental Parameters and Figures-of-Merit of Antennas 25

2.1 Introduction 25

2.2 Radiation Pattern 25

2.3 Radiation Power Density 35

2.4 Radiation Intensity 37

2.5 Beamwidth 40

2.6 Directivity 41

2.7 Numerical Techniques 55

2.8 Antenna Efficiency 60

2.9 Gain, Realized Gain 61

2.10 Beam Efficiency 65

2.11 Bandwidth 65

2.12 Polarization 66

2.13 Input Impedance 75

2.14 Antenna Radiation Efficiency 79

2.15 Antenna Vector Effective Length and Equivalent Areas 81

2.16 Maximum Directivity and Maximum Effective Area 86

2.17 Friis Transmission Equation and Radar Range Equation 88

2.18 Antenna Temperature 96

2.19 Multimedia 100

References 103

Problems 105

3 Radiation Integrals and Auxiliary Potential Functions 127

3.1 Introduction 127

3.2 The Vector Potential A for an Electric Current Source J 128

3.3 The Vector Potential F for A magnetic Current Source m 130

3.4 Electric and Magnetic Fields for Electric (J) and Magnetic (M) Current Sources 131

3.5 Solution of the Inhomogeneous Vector Potential Wave Equation 132

3.6 Far-Field Radiation 136

3.7 Duality Theorem 137

3.8 Reciprocity and Reaction Theorems 138

References 143

Problems 143

4 Linear Wire Antennas 145

4.1 Introduction 145

4.2 Infinitesimal Dipole 145

4.3 Small Dipole 155

4.4 Region Separation 158

4.5 Finite Length Dipole 164

4.6 Half-Wavelength Dipole 176

4.7 Linear Elements Near or On Infinite Perfect Electric Conductors (PEC), Perfect Magnetic Conductors (PMC) and Electromagnetic Band-Gap (EBG) Surfaces 179

4.8 Ground Effects 203

4.9 Computer Codes 216

4.10 Multimedia 216

References 218

Problems 220

5 Loop Antennas 235

5.1 Introduction 235

5.2 Small Circular Loop 236

5.3 Circular Loop of Constant Current 250

5.4 Circular Loop with Nonuniform Current 259

5.5 Ground and Earth Curvature Effects for Circular Loops 268

5.6 Polygonal Loop Antennas 269

5.7 Ferrite Loop 270

5.8 Mobile Communication Systems Applications 272

5.9 Multimedia 272

References 275

Problems 277

6 Arrays: Linear, Planar, and Circular 285

6.1 Introduction 285

6.2 Two-Element Array 286

6.3 N-Element Linea…