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| Preface | |
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| Introduction | |
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| Introduction | |
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| Reflector Antenna Basics | |
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| Organization of Book Chapters | |
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| References | |
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| Reflector Antennas for Space Communications | |
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| Introduction | |
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| Contoured Beam Antennas | |
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| Single-Offset Shaped Reflector Antenna for Contoured Beams | |
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| Dual-Offset Gregorian Reflectors | |
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| Gridded-Reflector Antennas | |
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| Multiple-Beam Antennas | |
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| Introduction | |
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| Frequency Reuse Schemes | |
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| Multiple-Beam Antenna Types | |
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| Design and Analysis of Multiple-Beam Reflector Antennas | |
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| Multiple-Beam Antenna Design Examples for Various Satellite Services | |
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| References | |
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| Reflector Antennas for Terrestrial Communications | |
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| Introduction | |
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| Large Earth Station Reflector Antenna | |
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| Design Method | |
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| Main Performance | |
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| Tri-Reflector Offset Antenna for Terrestrial Microwave Relay Link Systems | |
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| Electrical Design | |
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| Structural Design | |
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| Main Performance of a Prototype Antenna | |
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| Shaped Beam Horn Reflector Antenna for 20/30-GHz-Band Communication Systems | |
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| Design | |
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| Performance | |
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| Offset-Shaped Dual-Reflector Antenna with an Elliptical Aperture for Satellite News Gathering | |
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| Reflector Design | |
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| Mechanical Structure | |
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| Main Performance | |
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| Low-Profile Dual-Shaped Reflector Antenna with an Elliptical Aperture for Aeronautical Satellite Communication Systems | |
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| Design Method | |
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| Main Performance | |
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| Compact Reflector Antenna for Ku-Band ESV and VSAT | |
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| Compact Reflector Antenna Problems | |
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| Design Example | |
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| Main Performance | |
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| Single-Reflector Wide-Beam-Spacing Multibeam Antennas | |
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| Design | |
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| Performance | |
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| Multisector Omnidirectional Offset-Shaped Reflector Antenna for 26-GHz-Band Fixed Wireless Access Base Station | |
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| Design | |
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| Performance | |
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| References | |
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| Reflector Antennas for Terahertz Imaging Applications | |
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| Introduction | |
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| Reflector Systems Focusing in the Fresnel Region | |
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| Focusing in the Fresnel or Fraunhofer Region | |
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| Field in the Target Plane of a Focusing Reflector | |
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| General Properties of the Field in the Target Plane | |
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| Equivalence Between Offset Parabolic and Elliptical Reflectors | |
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| Imaging with Focal Plane Arrays | |
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| Relationship Between the Reflector Aperture Efficiency and the Power Received by an Antenna in the Focal Plane of the Reflector | |
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| Focal Plane Sampling in Active Systems | |
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| Focal Plane Sampling in Passive Systems | |
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| Typical Reflector Systems | |
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| Imaging with Mechanical Scanners | |
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| Types of Mechanical Scanners | |
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| Typical Reflector Systems | |
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| Derivation of Field in the Focal Plane of a Focusing Reflector | |
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| Effective Height of the Reflector Antenna Feed | |
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| Power Received by an Antenna in the Focal Plane of a Focusing Reflector | |
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| Integration Time in Passive Detectors | |
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| Instrument Background Contribution | |
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| References | |
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| Multiband Reflector Antennas | |
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| Introduction | |
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| Dual-Band Reflector Antennas with Single Feeds | |
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| Dual-Band Reflector Antennas with Multiple Feeds | |
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| Multiband Antennas Supporting Several Frequency Bands | |
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| Tri-Band Antenna | |
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| Multiband Antenna Supporting Five Frequency Bands | |
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| Stepped-Reflector Antenna | |
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| Reflector Antenna with Reflective and Partially Reflective Surfaces | |
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| References | |
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| Reflector Antennas for Remote Sensing Applications | |
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| Introduction | |
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| Solid Nondeployable Composite Reflectors | |
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| Voyager/Magellan | |
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| Cassini | |
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| CloudSat | |
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| Aquarius | |
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| Mars Reconnaissance Orbiter (MRO) | |
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| JASON Advanced Microwave Radiometer Antenna | |
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| Deployable Reflector Antennas | |
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| Deployable Composite Reflectors | |
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| Deployable Mesh Reflectors | |
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| Reflectarrays | |
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| Inflatable Reflectors and Structures | |
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| Summary | |
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| Acknowledgments | |
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| References | |
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| Feed Assemblies, Passive Intermodulation, Multipaction, and Corona | |
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| Introduction | |
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| Feed Components | |
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| Bends | |
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| Transitions | |
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| Filters | |
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| E-Plane, H-Plane, and Magic Tees | |
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| Orthomode Transducers | |
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| Polarizers | |
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| Horns | |
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| Feed Design | |
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| Integrated Design Approach | |
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| Other Key RF Design Considerations | |
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| Precision RF CAD Tools | |
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| Mechanical and Thermal Design | |
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| Manufacturing Methods | |
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| Feed Examples | |
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| Standard C-Band Feed | |
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| Standard Ku-Band Feeds | |
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| K-Ka-Band Feed | |
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| Low Profile K-Ka-Band Network for Feed Array | |
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| K-Ka-Q-Band Network | |
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| Ku-Band Tracking Feed | |
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| Qualification and Protoflight Testing | |
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| Feed Assembly Deleterious High-Power RF Effects: Passive Intermodulation, Gas Ionization/Corona, and Multipactor | |
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| Passive Intermodulation | |
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| The PIM Problem | |
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| PIM Denned | |
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| Causes of PIM | |
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| Mathematical Definition [18, 19] | |
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| PIM as a Function of Incident Power | |
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| PIM Mitigation | |
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| Susceptible Systems | |
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| Hardware PIM Requirements | |
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| PIM Test and Verification Methods | |
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| Multipactor, Corona, and Ionization Breakdown | |
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| Multipactor | |
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| Corona and Ionization Breakdown | |
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| Hardware Test Requirements | |
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| Generic PIM Test Setup Equations Related to Far-Field Tx Flux Density | |
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| Generic PIM Test Setup Equations Related to Far-Field Rx Coupling | |
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| Example Test Procedure | |
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| References | |
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| Deployable Reflectors | |
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| Introduction | |
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| Reflector Classifications | |
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| Classifications According to Reflector Surface Geometry | |
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| Classification According to Reflector Surface Type | |
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| Segmented Reflectors | |
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| Semirigid Surface Reflectors: Spring-Back Antennas | |
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| Inflatable/Rigidizable Reflectors | |
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| Woven-Mesh Surface: The Wrap-Rib Reflector | |
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| Knitted-Mesh Surface Reflectors | |
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| The Knitted Mesh | |
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| The Shaping Net/Soft Structure | |
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| The Deploying Structure | |
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| Mesh and Soft-Structure Management Provisions | |
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| Reflector Subsystem Design Considerations | |
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| Electrical Requirements | |
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| Mechanical Requirements | |
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| Thermal and Environmental Requirements | |
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| References | |
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| Mechanical Aspects of Reflector Antennas for Space Applications | |
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| Mechanical Considerations for Spaceflight Antenna Reflectors | |
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| Spaceflight Reflector Design Requirements | |
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| RF Requirements | |
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| Mechanical Requirements | |
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| Reflector Geometries | |
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| Mechanical Design Considerations | |
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| Reflector Support Points and Interfaces | |
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| Mass | |
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| Stiffness | |
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| Stability | |
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| Dynamics Considerations | |
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| Acoustics Considerations | |
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| Thermal Considerations | |
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| Construction Considerations | |
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| Design Configuration | |
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| Reflector Construction Materials | |
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| Manufacturing Considerations | |
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| Mold Tooling | |
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| Mold Tool Surface Accuracy | |
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| Mold Tool Design Considerations | |
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| Mold Tool Material Options | |
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| Composite Fabrication Equipment Requirements | |
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| Mechanical and Environmental Testing | |
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| Fabrication In-Process Testing | |
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| Reflector Assembly Acceptance and Environmental Testing | |
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| Concluding Remarks | |
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| About the Editors | |
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| List of Contributors | |
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| Index | |