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Modern lens antennas for communications engineering

Author: John Thornton; Kao-Cheng Huang
Publisher: Hoboken, New Jersey : John Wiley & Sons, Inc., [2013]
Series: IEEE press series on electromagnetic wave theory, 39
Edition/Format:   Print book : EnglishView all editions and formats
Summary:
"The aim of this book is to present the modern design principles and analysis of lens antennas. It gives graduates and RF/Microwave professionals the design insights in order to make full use of lens antennas. Why do we want to write a book in lens antennas? Because this topic has not been thoroughly publicized, its importance is underestimated. As antennas play a key role in communication systems, recent
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Material Type: Internet resource
Document Type: Book, Internet Resource
All Authors / Contributors: John Thornton; Kao-Cheng Huang
ISBN: 9781118010655 1118010655 9781118345146 1118345142
OCLC Number: 753624330
Description: xii, 272 pages : illustrations ; 24 cm.
Contents: 1 Introduction / John Thornton Thornton, John, Kao-Cheng Huang Huang, Kao-Cheng 1 --
1.1 Lens Antennas: An Overview 2 --
1.1.1 The Microwave Lens 2 --
1.1.2 Advantages of Lens Antennas 4 --
1.1.3 Materials for Lenses 5 --
1.1.4 Synthesis 6 --
1.2 Feeds for Lens Antennas 8 --
1.2.1 Microstrip Feeds 8 --
1.2.2 Horn Feeds 9 --
1.3 Luneburg and Spherical Lenses 10 --
1.4 Quasi Optics and Lens Antennas 14 --
1.5 Lens Antenna Design 18 --
1.6 Metamaterial Lens 26 --
1.7 Planar Lens or Phase-Shifting Surface 30 --
1.7.1 Reflect Array 31 --
1.7.2 Planar Lens or Lens Array 33 --
1.8 Applications 36 --
1.9 Antenna Measurements 37 --
1.9.1 Radiation Pattern Measurement 37 --
1.9.2 Gain Measurement 38 --
1.9.3 Polarization Measurement 38 --
1.9.4 Anechoic Chambers and Ranges 38 --
2 Review of Electromagnetic Waves / Kao-Cheng Huang Huang, Kao-Cheng 49 --
2.1 Maxwell's Equations 49 --
2.1.1 Boundary Conditions 53 --
2.1.2 Equivalence Theorem 55 --
2.2 Antenna Parameters 56 --
2.2.1 Beam Solid Angle and Antenna Temperature 56 --
2.2.2 Directivity and Gain 58 --
2.2.3 Antenna Beamwidth 60 --
2.2.4 Aperture of a Lens 62 --
2.2.5 Phase Center 63 --
2.3 Polarization 64 --
2.4 Wave Propagation in Metamaterials 71 --
3 Polyrod Antennas / Kao-Cheng Huang Huang, Kao-Cheng 77 --
3.1 Polyrods as Resonators 78 --
3.2 The Polyrod as a Radiator 83 --
3.2.1 Tapered Polyrod Antenna 85 --
3.3 Patch-Fed Circular Polyrod 90 --
3.4 Array of Polyrods 97 --
3.5 Multibeam Polyrod Array 105 --
4 Millimeter Wave Lens Antennas / Kao-Cheng Huang Huang, Kao-Cheng 113 --
4.1 Millimeter Wave Characteristics 114 --
4.1.1 Millimeter Wave Loss Factors 114 --
4.1.2 Ray-Tracing Propagation 117 --
4.2 Millimeter Wave Substrate Lens for Imaging 121 --
4.3 Millimeter Wave and Submillimeter Wave Lens 126 --
4.3.1 Extended Hemispherical Lens 128 --
4.3.2 Off-Axis Extended Hemispherical Lens 133 --
4.3.3 Submillimeter Wave Lens Antennas for Communications 136 --
4.4 Analysis of Millimeter Wave Spherical Lens 139 --
4.5 Waveguide-Fed Millimeter Wave Integrated Lens 141 --
5 Lens Antennas for Communications From High-Altitude Platforms / John Thornton Thornton, John 147 --
5.1 Introduction 147 --
5.2 The High-Altitude Platform Concept 148 --
5.2.1 Spectrum Reuse Using HAPs 150 --
5.2.2 Example Results: Cell Power and Interference 155 --
5.3 Advantages of Lenses over Reflector Antennas 159 --
5.3.1 Reflectors 160 --
5.3.2 Lenses 161 --
5.3.3 Commercial Lens Antennas 162 --
5.4 Development of a Shaped Beam Low-Sidelobe Lens Antenna with Asymmetric Pattern 164 --
5.4.1 Primary Feed 165 --
5.4.2 Symmetric 5° Beamwidth Antenna 166 --
5.4.3 Asymmetric Beam 166 --
5.4.4 Measurements 174 --
5.5 Lens Antenna Pay load Model 177 --
5.6 Multifeed Lens 178 --
5.7 Multiple Beam Spherical Lens Antennas for HAP Payload 181 --
6 Spherical Lens Antennas / John Thornton Thornton, John 187 --
6.1 Introduction 187 --
6.2 Spherical Lens Overview 192 --
6.3 Analytical Methods 195 --
6.3.1 Ray Tracing 195 --
6.3.2 SWE 197 --
6.3.3 Computational Method and Results 202 --
6.3.4 Generic Feed Pattern 206 --
6.3.5 Commercial Solvers 208 --
6.4 Spherical Lens Materials and Fabrication Methods 210 --
6.4.1 Machined Polymers 210 --
6.4.2 Molding 212 --
6.4.3 Polymer Foams 212 --
6.4.4 PU Dielectric Loss 214 --
6.4.5 Artificial Dielectrics 215 --
6.5 Revisiting the Constant-Index Lens 215 --
6.5.1 A Practical, Patch-Fed Hemispherical Constant-Index Lens 219 --
6.5.2 Off-Axis Array-Fed Spherical Lens 219 --
6.6 Cross-Polarization Properties of Spherical Lenses 221 --
7 Hemispherical Lens-Reflector Scanning Antennas / John Thornton Thornton, John 225 --
7.1 Introduction 225 --
7.2 Candidate Scanning Antenna Technologies 226 --
7.3 Spherical and Hemispherical Lens Antenna 228 --
7.4 Hemispherical Lens Prototype 229 --
7.5 Evolution of a Two-Layer Stepped-Index Polymer Lens 232 --
7.6 A Hemispherical Lens-Reflector Antenna for Satellite Communications 238 --
7.6.1 Requirements 239 --
7.6.2 Lens Analysis 240 --
7.6.3 Three-Layer Lens Geometry 240 --
7.6.4 Lens Fabrication and Performance 243 --
7.6.5 Mechanical Tracking System 245 --
7.6.6 Ground Plane Effects 249 --
7.6.7 Aperture Blockage in Scanning Lens Reflector 251 --
7.7 A Low-Index Lens Reflector for Aircraft Communications (Contribution by D. Gray) 252.
Series Title: IEEE press series on electromagnetic wave theory, 39
Responsibility: John Thornton, Kao-Cheng Huang.
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Abstract:

The aim of this book is to present the modern design principles and analysis of lens antennas. It gives graduates and RF/Microwave professionals the design insights needed to make full use of lens  Read more...

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