| |
| |
| Preface | |
| |
| |
| Acknowledgments | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Reflector Antenna Basics | |
| |
| |
| |
| Feed Sources for Reflector Antennas | |
| |
| |
| |
| Analysis of Reflector Antennas | |
| |
| |
| |
| Advanced Reflector Antenna Configurations | |
| |
| |
| |
| Important Fundamental Parameters | |
| |
| |
| |
| Organization of the Book | |
| |
| |
| References | |
| |
| |
| |
| Numerical Techniques for Reflectors | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Reflector Geometry Using a Surface of Revolution | |
| |
| |
| |
| Rays in a Parabola | |
| |
| |
| |
| Geometric Optics | |
| |
| |
| |
| Feed Modeling | |
| |
| |
| |
| Analytical Feed Models | |
| |
| |
| |
| Spherical Wave Expansion Feed | |
| |
| |
| |
| Currents Expansion Feed | |
| |
| |
| |
| Reflector Analysis Methods | |
| |
| |
| |
| Aperture Method | |
| |
| |
| |
| PO Analysis | |
| |
| |
| |
| GO/GTD Analysis | |
| |
| |
| |
| Shooting and Bouncing Analysis | |
| |
| |
| |
| Moment Method Reflector Analysis | |
| |
| |
| |
| Reflector Size Limitation | |
| |
| |
| |
| Struts | |
| |
| |
| |
| Polygon Struts | |
| |
| |
| |
| Metal Space Frame Radome | |
| |
| |
| |
| Dual Reflector | |
| |
| |
| |
| Dual Grid Reflector | |
| |
| |
| |
| Reflector Coupling | |
| |
| |
| Acknowledgments | |
| |
| |
| References | |
| |
| |
| |
| Classical Reflector Antennas: Design Guidelines and Performance Characteristics | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| General Conic-Section-Generated Reflectors | |
| |
| |
| |
| Conic Sections | |
| |
| |
| |
| Conic-Section-Generated Reflectors | |
| |
| |
| |
| Parabolic Reflectors | |
| |
| |
| |
| Geometrical Parameters | |
| |
| |
| |
| Feed Patterns | |
| |
| |
| |
| Edge Tapers and Feed Tapers | |
| |
| |
| |
| Reflector Pattern Characteristics | |
| |
| |
| |
| Off-Focus Feeds | |
| |
| |
| |
| Beam Squint | |
| |
| |
| |
| Symmetric Versus Offset Parabolic Configurations | |
| |
| |
| |
| Folded-Optics Reflectors | |
| |
| |
| |
| Cassegrain and Gregorian Reflectors | |
| |
| |
| |
| The Equivalent Paraboloid | |
| |
| |
| |
| Feed and Subreflector Blockage | |
| |
| |
| |
| Sidelobes | |
| |
| |
| |
| Efficiency Factors | |
| |
| |
| |
| Offset Dual-Reflector Systems | |
| |
| |
| |
| Antenna Noise Temperature | |
| |
| |
| |
| Reflector Shaping | |
| |
| |
| |
| Other Classical Reflectors | |
| |
| |
| |
| Corner Reflectors | |
| |
| |
| |
| Spherical Reflector | |
| |
| |
| |
| Reflectors with Parabolic Arc | |
| |
| |
| References | |
| |
| |
| |
| Reflector Antennas with Adaptive Apertures | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Theory and Overview | |
| |
| |
| |
| Reflector Antenna Performance with Individual TE<sub>11<sub>, TM<sub>01<sub>, and TE<sub>21</sub> Modes of a Circular Waveguide Feed | |
| |
| |
| |
| Reflector Antenna Performance with Dual Mode Feed Horns | |
| |
| |
| |
| Symmetric Reflector with TE<sub>11</sub> + TM<sub>01</sub> Mode Feed Horn | |
| |
| |
| |
| Offset Reflector with TE<sub>11</sub> + TM<sub>01</sub> Mode Feed Horn | |
| |
| |
| |
| Symmetric Reflector with TE<sub>11</sub> + TE<sub>21</sub> Mode Feed Horn | |
| |
| |
| |
| Offset Reflector with TE<sub>11</sub> + TE<sub>21</sub> Mode Feed Horn | |
| |
| |
| |
| Symmetric Reflector with a Tri-Mode Circular Waveguide Feed | |
| |
| |
| |
| Practical Triple-Mode Feed Horn | |
| |
| |
| |
| Symmetric Reflector Antenna Performance with the Tri-Mode Feed | |
| |
| |
| |
| Multiple Phase Center Offset Reflectors with TM<sub>11</sub> + TM<sub>21</sub> Microstrip Patch Feeds | |
| |
| |
| References | |
| |
| |
| |
| Reflector Shaping | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Reflector Shaping Considerations | |
| |
| |
| |
| Reflector Shaping Techniques | |
| |
| |
| |
| Frequency Re-Use | |
| |
| |
| |
| Reflector Shaping Using Synthesis Techniques | |
| |
| |
| |
| Shaping Limitations and Manufacturing Aspects | |
| |
| |
| References | |
| |
| |
| |
| Bifocal and Bicollimated Dual Reflector Antennas | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Bifocal Dual Reflector Antennas | |
| |
| |
| |
| Cassegrain Configuration | |
| |
| |
| |
| Gregorian Configuration | |
| |
| |
| |
| Multifocal Dual Reflector Antennas | |
| |
| |
| |
| Bicollimated Dual Reflector Antenna | |
| |
| |
| |
| Design Procedure | |
| |
| |
| |
| Polynomial Approximation | |
| |
| |
| |
| Equivalent Gregorian Confocal Reflector | |
| |
| |
| |
| Limiting Gregorian Confocal Reflector | |
| |
| |
| |
| Phase Error Analysis | |
| |
| |
| |
| Design Example | |
| |
| |
| |
| Bifocal and Bicollimated Dual Reflector Antenna Applications | |
| |
| |
| Acknowledgments | |
| |
| |
| |
| Determination of the Parameters P, L, a, and d | |
| |
| |
| |
| Three-Dimensional Ray Tracing Procedure | |
| |
| |
| References | |
| |
| |
| |
| Advanced Reflector Antennas | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| Confocal Antenna System | |
| |
| |
| |
| Side-Fed and Front-Fed Offset Cassegrain Antenna Systems | |
| |
| |
| |
| Nonfocused Reflector Antenna | |
| |
| |
| |
| Reconfigurable Reflector Antennas | |
| |
| |
| |
| ADE Reflector Antennas | |
| |
| |
| References | |
| |
| |
| |
| Reflectarray Antennas | |
| |
| |
| |
| Introduction | |
| |
| |
| |
| General Design Guidelines | |
| |
| |
| |
| Aperture Efficiency of Reflectarray and Comparison with Conventional Parabolic Reflector | |
| |
| |
| |
| Illumination Efficiency | |
| |
| |
| |
| Spillover Efficiency | |
| |
| |
| |
| Polarization Efficiency | |
| |
| |
| |
| Phase Efficiency | |
| |
| |
| |
| Blockage Efficiency | |
| |
| |
| |
| Dielectric and Conductor Loss | |
| |
| |
| |
| Contribution of Scattering from Constituent Components of a Reflectarray to Its Near-Field and Far-Field Operation | |
| |
| |
| |
| Different Types of Reflectarray Cell Elements | |
| |
| |
| |
| Different Types of Reflectarray Antennas | |
| |
| |
| Acknowledgments | |
| |
| |
| References | |
| |
| |
| About the Editors | |
| |
| |
| List of Contributors | |
| |
| |
| Index | |