Conformal Array Antenna Theory and DesignHardback IEEE Press Series on Electromagnetic Wave Theory
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- Publisher: Wiley-Blackwell (an imprint of John Wiley & Sons Ltd)
- Format: Hardback | 488 pages
- Dimensions: 180mm x 254mm x 28mm | 953g
- Publication date: 1 April 2006
- Publication City/Country: Chicester
- ISBN 10: 0471465844
- ISBN 13: 9780471465843
- Illustrations note: Illustrations (some col.)
- Sales rank: 1,579,000
This is the first comprehensive treatment of conformal antenna arrays from an engineering perspective. While providing a thorough foundation in theory, the authors of this publication provide a wealth of hands-on instruction for practical analysis and design of conformal antenna arrays. Thus, you get the knowledge you need, alongside the practical know-how to design antennas that are integrated into such structures aircrafts or skyscrapers.
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Lars Josefsson is a Fulbright scholar who has been with Ericsson Microwave Systems in Sweden since 1963 when he worked on ground scattering problems associated with radar design, infrared radiation and propagation, and airborne pulse doppler radar system analysis. In 1968 he moved to the Antenna Department at Ericsson where he was involved with broadband polarizers and twist reflectors, stripline and waveguide slot arrays, and phased array antenna systems. He is responsible for the introduction of new antenna technology and systems, internal R& D projects, and internal courses relating to antennas. In 2001 he was appointed Senior Expert, Antenna Systems. He has at the early project definition phase undertaken studies for many of the antenna systems that have later been put into production by Ericsson. These studies include, for example, dual frequency Cassegrain antennas, Flat plate antennas, Phase steered AEW antennas, and 3D Radar antennas. Dr. Josefsson has taken an active role in the AIMT project (Antenna Integrated Microwave Technology) sponsored by FMV, the Swedish Defense Material Administration. His responsibilities have included the development of mutual coupling models for certain classes of array antennas. He was technical leader for the initial development phase of Ericsson's AESA phased array radar antenna, aimed at next generation airborne radar applications. Currently he is involved in developing conformal antenna arrays. Patrik Persson is a research scientist and instructor at the Royal Institute of Technology in Sweden. He is the 2002 recipient of the R.W.P. King Prize Paper Award by the IEEE Antennas and Propagation Society. A frequent collaborator with Dr. Josefsson, he teaches courses on Antenna Theory at RIT and has been a visiting scholar at the ElectroScience Laboratory at Ohio State University.
Table of contents
Preface. Abbreviations and Acronyms. 1 INTRODUCTION. 1.1 The Definition of a Conformal Antenna. 1.2 Why Conformal Antennas? 1.3 History. 1.4 Metal Radomes. 1.5 Sonar Arrays. References. 2 CIRCULAR ARRAY THEORY. 2.1 Introduction. 2.2 Fundamentals. 2.2.1 Linear Arrays. 2.2.2 Circular Arrays. 2.3 Phase Mode Theory. 2.3.1 Introduction. 2.3.2 Discrete Elements. 2.3.3 Directional Elements. 2.4 The Ripple Problem in Omnidirectional Patterns. 2.4.1 Isotropic Radiators. 2.4.2 Higher-Order Phase Modes. 2.4.3 Directional Radiators. 2.5 Elevation Pattern. 2.6 Focused Beam Pattern. References. 3 THE SHAPES OF CONFORMAL ANTENNAS. 3.1 Introduction. 3.2 360- Coverage. 3.2.1 360- Coverage Using Planar Surfaces. 3.2.2 360- Coverage Using a Curved Surface. 3.3 Hemispherical Coverage. 3.3.1 Introduction. 3.3.2 Hemispherical Coverage Using Planar Surfaces. 3.3.3 Half Sphere. 3.3.4 Cone. 3.3.5 Ellipsoid. 3.3.6 Paraboloid. 3.3.7 Comparing Shapes. 3.4 Multifaceted Surfaces. 3.5 References. 4 METHODS OF ANALYSIS. 4.1 Introduction. 4.2 The Problem. 4.3 Electrically Small Surfaces. 4.3.1 Introduction. 4.3.2 Modal Solutions. 18.104.22.168 Introduction. 22.214.171.124 The Circular Cylinder. 126.96.36.199 A Unit Cell Approach. 4.3.3 Integral Equations and the Method of Moments. 4.3.4 Finite Difference Time Domain Methods (FDTD). 188.8.131.52 Introduction. 184.108.40.206 Conformal or Contour-Patch (CP) FDTD. 220.127.116.11 FDTD in Global Curvilinear Coordinates. 18.104.22.168 FDTD in Cylindrical Coordinates. 4.3.5 Finite Element Method (FEM). 22.214.171.124 Introduction. 126.96.36.199 Hybrid FE-BI Method. 4.4 Electrically Large Surfaces. 4.4.1 Introduction. 4.4.2 High-Frequency Methods for PEC Surfaces. 4.4.3 High-Frequency Methods for Dielectric Coated Surfaces. 4.5 Two Examples. 4.5.1 Introduction. 4.5.2 The Aperture Antenna. 4.5.3 The Microstrip-Patch Antenna. 4.6 A Comparison of Analysis Methods. Appendix 4A-Interpretation of the ray theory. 4A.1 Watson Transformation. 4A.2 Fock Substitution. 4A.3 SDP Integration. 4A.4 Surface Waves. 4A.5 Generalization. References. 5 GEODESICS ON CURVED SURFACES. 5.1 Introduction. 5.1.1 Definition of a Surface and Related Parameters. 5.1.2 The Geodesic Equation. 5.1.3 Solving the Geodesic Equation and the Existence of Geodesics. 5.2 Singly Curved Surfaces. 5.3 Doubly Curved Surfaces. 5.3.1 Introduction. 5.3.2 The Cone. 5.3.3 Rotationally Symmetric Doubly Curved Surfaces. 5.3.4 Properties of Geodesics on Doubly Curved Surfaces. 5.3.5 Geodesic Splitting. 5.4 Arbitrarily Shaped Surfaces. 5.4.1 Hybrid surfaces. 5.4.2 Analytically Described Surfaces. References. 6 ANTENNAS ON SINGLY CURVED SURFACES. 6.1 Introduction. 6.2 Aperture Antennas on Circular Cylinders. 6.2.1 Introduction. 6.2.2 Theory. 6.2.3 Mutual Coupling. 188.8.131.52 Isolated Mutual Coupling. 184.108.40.206 Cross Polarization Coupling. 220.127.116.11 Array mutual coupling. 6.2.4 Radiation Characteristics. 18.104.22.168 Isolated-Element Patterns. 22.214.171.124 Embedded-Element Patterns. 6.3 Aperture Antennas on General Convex Cylinders. 6.3.1 Introduction. 6.3.2 Mutual Coupling. 126.96.36.199 The Elliptic Cylinder. 188.8.131.52 The Parabolic Cylinder. 184.108.40.206 The Hyperbolic Cylinder. 6.3.3 Radiation Characteristics. 220.127.116.11 The Elliptic Cylinder. 18.104.22.168 End Effects. 6.4 Aperture Antennas on Faceted Cylinders. 6.4.1 Introduction. 6.4.2 Mutual Coupling. 6.4.3 Radiation Characteristics. 6.5 Aperture Antennas on Dielectric Coated Circular Cylinders. 6.5.1 Introduction. 6.5.2 Mutual Coupling. 22.214.171.124 Isolated Mutual Coupling. 126.96.36.199 Array Mutual Coupling. 6.5.3 Radiation Characteristics. 188.8.131.52 Isolated-Element Patterns. 184.108.40.206 Embedded-Element Patterns. 6.6 Microstrip-Patch Antennas on Coated Circular Cylinders. 6.6.1 Introduction. 6.6.2 Theory. 6.6.3 Mutual Coupling. 220.127.116.11 Single-Element Characteristics. 18.104.22.168 Isolated and Array Mutual Coupling. 6.6.4 Radiation Characteristics. 22.214.171.124 Isolated-Element Patterns. 126.96.36.199 Embedded-Element Patterns. 6.7 The Cone. 6.7.1 Introduction. 6.7.2 Mutual Coupling. 188.8.131.52 Aperture Antennas. 184.108.40.206 Microstrip-Patch Antennas. 6.7.3 Radiation Characteristics. 220.127.116.11 Aperture Antennas 248 18.104.22.168 Microstrip-Patch Antennas. References. 7 ANTENNAS ON DOUBLY CURVED SURFACES. 7.1 Introduction. 7.2 Aperture Antennas. 7.2.1 Introduction. 7.2.2 Mutual Coupling. 22.214.171.124 Isolated Mutual Coupling. 126.96.36.199 Array Mutual Coupling. 7.2.3 Radiation Characteristics. 7.3 Microstrip-Patch Antennas. 7.3.1 Introduction. 7.3.2 Mutual Coupling. 188.8.131.52 Single-Element Characteristics. 184.108.40.206 Isolated Mutual Coupling. 7.3.3 Radiation Characteristics. References. 8 CONFORMAL ARRAY CHARACTERISTICS. 8.1 Introduction. 8.2 Mechanical Considerations. 8.2.1 Array Shapes. 8.2.2 Element Distribution on a Curved Surface. 8.2.3 Multifacet Solutions. 8.2.4 Tile Architecture. 8.2.5 Static and Dynamic Stress. 8.2.6 Other Electromagnetic Considerations. 8.3 Radiation Patterns. 8.3.1 Introduction. 8.3.2 Grating Lobes. 8.3.3 Scan-Invariant Pattern. 8.3.4 Phase-Scanned Pattern. 8.3.5 A Simple Aperture Model for Microstrip Arrays. 8.4 Array Impedance. 8.4.1 Introduction. 8.4.2 Phase-Mode Impedance. 8.5 Polarization. 8.5.1 Polarization Definitions. 8.5.2 Cylindrical Arrays. 220.127.116.11 Dipole Elements. 18.104.22.168 Aperture elements. 8.5.3 Polarization in Doubly Curved Arrays. 22.214.171.124 A Paraboloidal Array. 8.5.4 Polarization Control. 8.6 Characteristics of Selected Conformal Arrays. 8.6.1 Nearly Planar Arrays. 8.6.2 Circular Arrays. 8.6.3 Cylindrical Arrays. 8.6.4 Conical Arrays. 8.6.5 Spherical Arrays. 8.6.6 Paraboloidal Arrays. 8.6.7 Ellipsoidal Arrays. 8.6.8 Other Shapes. References. 9 BEAM FORMING. 9.1 Introduction. 9.2 A Note on Orthogonal Beams. 9.3 Analog Feed Systems. 9.3.1 Vector Transfer Matrix Systems. 9.3.2 Switch Matrix Systems. 9.3.3 Butler Matrix Feed Systems. 9.3.4 RF Lens Feed Systems. 126.96.36.199 The R-2R Lens Feed. 188.8.131.52 The R-kR Lens Feed. 184.108.40.206 Mode-Controlled Lenses. 220.127.116.11 The Luneburg Lens. 18.104.22.168 The Geodesic Lens. 22.214.171.124 The Dome Antenna. 9.4 Digital Beam Forming. 9.5 Adaptive Beam Forming. 9.5.1 Introduction. 9.5.2 The Sample Matrix Inversion Method. 9.5.3 An Adaptive Beam Forming Simulation Using a Circular Array. 9.6 Remarks on Feed Systems. References. 10 CONFORMAL ARRAY PATTERN SYNTHESIS. 10.1 Introduction. 10.2 Shape Optimization. 10.3 Fourier Methods for Circular Ring Arrays. 10.4 Dolph-Chebysjev Pattern Synthesis. 10.4.1 Isotropic Elements. 10.4.2 Directive Elements. 10.5 An Aperture Projection Method. 10.6 The Method of Alternating Projections. 10.7 Adaptive Array Methods. 10.8 Least-Mean-Squares Methods (LMS). 10.9 Polarimetric Pattern Synthesis. 10.10 Other Optimization Methods. 10.11 A Synthesis Example Including Mutual Coupling. 10.12 A Comparison of Synthesis Methods. References. 11 SCATTERING FROM CONFORMAL ARRAYS. 11.1 Introduction. 11.2 Definitions. 11.3 Radar Cross Section Analysis. 11.3.1 General. 11.3.2 Analysis Method for an Array on a Conducting Cylinder. 11.3.3 Analysis Method for an Array on a Conducting Cylinder with a Dielectric Coating. 11.4 Cylindrical Array. 11.4.1 Analysis and Experiment-Rectangular Grid. 11.4.2 Higher-Order Waveguide Modes. 11.4.3 Triangular Grid. 11.4.4 Conclusions from the PEC Conformal Array Analysis. 11.5 Cylindrical Array with Dielectric Coating. 11.5.1 Single Element with Dielectric Coating. 11.5.2 Array with Dielectric Coating. 11.6 Radiation and Scattering Trade-off. 11.6.1 Introduction. 11.6.2 Single-Element Results. 11.6.3 Array Results. 11.7 Discussion. References. Subject Index. About the Authors.