{"product_id":"lens-antennas-for-communicatio-9781118010655","title":"Lens Antennas for Communicatio","description":"\u003cb\u003eBook Synopsis\u003c\/b\u003e\u003cbr\u003eThe 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 antennas. Because this topic has not been thoroughly publicized, its importance is underestimated.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTable of Contents\u003c\/b\u003e\u003cbr\u003ePreface ix  \u003cp\u003eAcknowledgments xi\u003c\/p\u003e \u003cp\u003e\u003cb\u003e1 INTRODUCTION 1\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eJohn Thornton and Kao-Cheng Huang\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e1.1 Lens Antennas: An Overview 2\u003c\/p\u003e \u003cp\u003e1.1.1 The Microwave Lens 2\u003c\/p\u003e \u003cp\u003e1.1.2 Advantages of Lens Antennas 4\u003c\/p\u003e \u003cp\u003e1.1.3 Materials for Lenses 5\u003c\/p\u003e \u003cp\u003e1.1.4 Synthesis 6\u003c\/p\u003e \u003cp\u003e1.2 Feeds for Lens Antennas 8\u003c\/p\u003e \u003cp\u003e1.2.1 Microstrip Feeds 8\u003c\/p\u003e \u003cp\u003e1.2.2 Horn Feeds 9\u003c\/p\u003e \u003cp\u003e1.3 Luneburg and Spherical Lenses 10\u003c\/p\u003e \u003cp\u003e1.4 Quasi Optics and Lens Antennas 14\u003c\/p\u003e \u003cp\u003e1.5 Lens Antenna Design 18\u003c\/p\u003e \u003cp\u003e1.6 Metamaterial Lens 26\u003c\/p\u003e \u003cp\u003e1.7 Planar Lens or Phase-Shifting Surface 30\u003c\/p\u003e \u003cp\u003e1.7.1 Refl ect Array 31\u003c\/p\u003e \u003cp\u003e1.7.2 Planar Lens or Lens Array 33\u003c\/p\u003e \u003cp\u003e1.8 Applications 36\u003c\/p\u003e \u003cp\u003e1.9 Antenna Measurements 37\u003c\/p\u003e \u003cp\u003e1.9.1 Radiation Pattern Measurement 37\u003c\/p\u003e \u003cp\u003e1.9.2 Gain Measurement 38\u003c\/p\u003e \u003cp\u003e1.9.3 Polarization Measurement 38\u003c\/p\u003e \u003cp\u003e1.9.4 Anechoic Chambers and Ranges 38\u003c\/p\u003e \u003cp\u003e\u003cb\u003e2 REVIEW OF ELECTROMAGNETIC WAVES 49\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eKao-Cheng Huang\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e2.1 Maxwell’s Equations 49\u003c\/p\u003e \u003cp\u003e2.1.1 Boundary Conditions 53\u003c\/p\u003e \u003cp\u003e2.1.2 Equivalence Theorem 55\u003c\/p\u003e \u003cp\u003e2.2 Antenna Parameters 56\u003c\/p\u003e \u003cp\u003e2.2.1 Beam Solid Angle and Antenna Temperature 56\u003c\/p\u003e \u003cp\u003e2.2.2 Directivity and Gain 58\u003c\/p\u003e \u003cp\u003e2.2.3 Antenna Beamwidth 60\u003c\/p\u003e \u003cp\u003e2.2.4 Aperture of a Lens 62\u003c\/p\u003e \u003cp\u003e2.2.5 Phase Center 63\u003c\/p\u003e \u003cp\u003e2.3 Polarization 64\u003c\/p\u003e \u003cp\u003e2.4 Wave Propagation in Metamaterials 71\u003c\/p\u003e \u003cp\u003e\u003cb\u003e3 POLYROD ANTENNAS 77\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eKao-Cheng Huang\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e3.1 Polyrods as Resonators 78\u003c\/p\u003e \u003cp\u003e3.2 The Polyrod as a Radiator 83\u003c\/p\u003e \u003cp\u003e3.2.1 Tapered Polyrod Antenna 85\u003c\/p\u003e \u003cp\u003e3.3 Patch-Fed Circular Polyrod 90\u003c\/p\u003e \u003cp\u003e3.4 Array of Polyrods 97\u003c\/p\u003e \u003cp\u003e3.5 Multibeam Polyrod Array 105\u003c\/p\u003e \u003cp\u003e\u003cb\u003e4 MILLIMETER WAVE LENS ANTENNAS 113\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eKao-Cheng Huang\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e4.1 Millimeter Wave Characteristics 114\u003c\/p\u003e \u003cp\u003e4.1.1 Millimeter Wave Loss Factors 114\u003c\/p\u003e \u003cp\u003e4.1.2 Ray-Tracing Propagation 117\u003c\/p\u003e \u003cp\u003e4.2 Millimeter Wave Substrate Lens for Imaging 121\u003c\/p\u003e \u003cp\u003e4.3 Millimeter Wave and Submillimeter Wave Lens 126\u003c\/p\u003e \u003cp\u003e4.3.1 Extended Hemispherical Lens 128\u003c\/p\u003e \u003cp\u003e4.3.2 Off-Axis Extended Hemispherical Lens 133\u003c\/p\u003e \u003cp\u003e4.3.3 Submillimeter Wave Lens Antennas for Communications 136\u003c\/p\u003e \u003cp\u003e4.4 Analysis of Millimeter Wave Spherical Lens 139\u003c\/p\u003e \u003cp\u003e4.5 Waveguide-Fed Millimeter Wave Integrated Lens 141\u003c\/p\u003e \u003cp\u003e\u003cb\u003e5 LENS ANTENNAS FOR COMMUNICATIONS FROM HIGH-ALTITUDE PLATFORMS 147\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eJohn Thornton\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e5.1 Introduction 147\u003c\/p\u003e \u003cp\u003e5.2 The High-Altitude Platform Concept 148\u003c\/p\u003e \u003cp\u003e5.2.1 Spectrum Reuse Using HAPs 150\u003c\/p\u003e \u003cp\u003e5.2.2 Example Results: Cell Power and Interference 155\u003c\/p\u003e \u003cp\u003e5.3 Advantages of Lenses over Reflector Antennas 159\u003c\/p\u003e \u003cp\u003e5.3.1 Reflectors 160\u003c\/p\u003e \u003cp\u003e5.3.2 Lenses 161\u003c\/p\u003e \u003cp\u003e5.3.3 Commercial Lens Antennas 162\u003c\/p\u003e \u003cp\u003e5.4 Development of a Shaped Beam Low-Sidelobe Lens Antenna with Asymmetric Pattern 164\u003c\/p\u003e \u003cp\u003e5.4.1 Primary Feed 165\u003c\/p\u003e \u003cp\u003e5.4.2 Symmetric 5° Beamwidth Antenna 166\u003c\/p\u003e \u003cp\u003e5.4.3 Asymmetric Beam 166\u003c\/p\u003e \u003cp\u003e5.4.4 Measurements 174\u003c\/p\u003e \u003cp\u003e5.5 Lens Antenna Payload Model 177\u003c\/p\u003e \u003cp\u003e5.6 Multifeed Lens 178\u003c\/p\u003e \u003cp\u003e5.7 Multiple Beam Spherical Lens Antennas for HAP Payload 181\u003c\/p\u003e \u003cp\u003e\u003cb\u003e6 SPHERICAL LENS ANTENNAS 187\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eJohn Thornton\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e6.1 Introduction 187\u003c\/p\u003e \u003cp\u003e6.2 Spherical Lens Overview 192\u003c\/p\u003e \u003cp\u003e6.3 Analytical Methods 195\u003c\/p\u003e \u003cp\u003e6.3.1 Ray Tracing 195\u003c\/p\u003e \u003cp\u003e6.3.2 SWE 197\u003c\/p\u003e \u003cp\u003e6.3.3 Computational Method and Results 202\u003c\/p\u003e \u003cp\u003e6.3.4 Generic Feed Pattern 206\u003c\/p\u003e \u003cp\u003e6.3.5 Commercial Solvers 208\u003c\/p\u003e \u003cp\u003e6.4 Spherical Lens Materials and Fabrication Methods 210\u003c\/p\u003e \u003cp\u003e6.4.1 Machined Polymers 210\u003c\/p\u003e \u003cp\u003e6.4.2 Molding 212\u003c\/p\u003e \u003cp\u003e6.4.3 Polymer Foams 212\u003c\/p\u003e \u003cp\u003e6.4.4 PU Dielectric Loss 214\u003c\/p\u003e \u003cp\u003e6.4.5 Artifi cial Dielectrics 215\u003c\/p\u003e \u003cp\u003e6.5 Revisiting the Constant-Index Lens 215\u003c\/p\u003e \u003cp\u003e6.5.1 A Practical, Patch-Fed Hemispherical Constant-Index Lens 219\u003c\/p\u003e \u003cp\u003e6.5.2 Off-Axis Array-Fed Spherical Lens 219\u003c\/p\u003e \u003cp\u003e6.6 Cross-Polarization Properties of Spherical Lenses 221\u003c\/p\u003e \u003cp\u003e\u003cb\u003e7 HEMISPHERICAL LENS-REFLECTOR SCANNING ANTENNAS 225\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eJohn Thornton\u003c\/i\u003e\u003c\/p\u003e \u003cp\u003e7.1 Introduction 225\u003c\/p\u003e \u003cp\u003e7.2 Candidate Scanning Antenna Technologies 226\u003c\/p\u003e \u003cp\u003e7.3 Spherical and Hemispherical Lens Antenna 228\u003c\/p\u003e \u003cp\u003e7.4 Hemispherical Lens Prototype 229\u003c\/p\u003e \u003cp\u003e7.5 Evolution of a Two-Layer Stepped-Index Polymer Lens 232\u003c\/p\u003e \u003cp\u003e7.6 A Hemispherical Lens-Reflector Antenna for Satellite Communications 238\u003c\/p\u003e \u003cp\u003e7.6.1 Requirements 239\u003c\/p\u003e \u003cp\u003e7.6.2 Lens Analysis 240\u003c\/p\u003e \u003cp\u003e7.6.3 Three-Layer Lens Geometry 240\u003c\/p\u003e \u003cp\u003e7.6.4 Lens Fabrication and Performance 243\u003c\/p\u003e \u003cp\u003e7.6.5 Mechanical Tracking System 245\u003c\/p\u003e \u003cp\u003e7.6.6 Ground Plane Effects 249\u003c\/p\u003e \u003cp\u003e7.6.7 Aperture Blockage in Scanning Lens Reflector 251\u003c\/p\u003e \u003cp\u003e7.7 A Low-Index Lens Reflector for Aircraft Communications (Contribution by D. Gray) 252\u003c\/p\u003e \u003cp\u003eAbout the Authors 267\u003c\/p\u003e \u003cp\u003eIndex 268\u003c\/p\u003e","brand":"Wiley","offers":[{"title":"Default Title","offer_id":53186828403031,"sku":"9781118010655","price":101.66,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/bookcurl.com\/products\/lens-antennas-for-communicatio-9781118010655","provider":"Book Curl","version":"1.0","type":"link"}