Reflectarray Antennas: EA.JPG

Reflectarray Antennas (Hardcover)by John Huang (Author), Jose Antonio Encinar (Author)


Hardcover: 216 pages Publisher: Wiley-IEEE Press (October 29, 2007) Language: English ISBN-10: 047008491X ISBN-13: 978-0470084915

Product Description
Describes the configuration and principles of a reflectarray antenna, its advantages over other antennas, the history of its development, analysis techniques, practical design procedures, bandwidth issues and wideband techniques, as well as applications and recent developments. Both authors are well respected practitioners who have build these antennas and developed them for space flight.

From the Back Cover

Covers the history, practical implementation, design techniques, and future developments of reflectarray antennas
Reflectarray antennas were invented more than forty years ago, but broad commercial interest only began little more than a decade ago as an outgrowth of the development of low-profile printed reflectarray antennas. Although widely covered in journal and conference papers, the topic has never been treated comprehensively in a single volume. Now, written by two experts in the field, Reflectarray Antennas offers complete coverage of this important, timely subject. Beginning with an introduction to reflectarray antennas and an extensive overview of its history, the book goes on to explore:

• The configuration and principles of a reflectarray antenna, and its advantages over other antennas
• Antenna analysis techniques
  

Illustrated with photographs, drawings, and tables, this groundbreaking book is an important addition to any electrical engineer's library, as well as critical to graduate students focused on antenna engineering and electromagnetics with an interest in reflectarray antenna designs.

Content

Preface ix
Acknowledgments xiii
1. Introductionto Refl ectarray Antenna 1
1.1 Description of Refl ectarray 1
1.2 Printed Refl ectarray 3
1.2.1 Advantages of Refl ectarray 3
1.2.2 Disadvantage of Refl ectarray 4
References 6
2. Development History 9
2.1 Early Innovations and Developments 9
2.1.1 Waveguide Refl ectarray in the 1960s 9
2.1.2 Spiralphase Refl ectarray in the 1970s 9
2.1.3 Microstrip Refl ectarray in the 1980s 11
2.2 Recent Developments 13
2.3 Comparison with Similar Technologies 20
2.3.1 Array Lens 20
2.3.2 Fresnel-Zone Plate Refl ector 22
References 24
3. Antenna Analysis Techniques 27
3.1 Introduction 27
3.2 Overview of Analysis Techniques 29
3.3 Phase-Shift Distribution 34
3.4 Analysis of Rectangular Patches with Attached Stubs 35
3.5 Full-Wave Analysis of Multilayer Periodic Structures 38
3.5.1 Characterization of a Periodic Interface as a
Building Block 40
CONTENTS
vi CONTENTS
3.5.2 Analysis of Refl ectarray Elements in a Periodic
Environment 44
3.6 Phase-Shifter Element Based on Single and Stacked
Variable-Sized Patches 48
3.6.1 Single-Layer Elements 49
3.6.2 Multilayer Elements 50
3.6.3 Measurements of Phase-Shift and Losses in
Waveguide Simulator 52
3.7 Phase-Shifter Element Based on Aperture-Coupled Patches 55
3.7.1 Design of Refl ectarray Element 56
3.7.2 Phase Delay Curves 57
3.8 Feed Model and Radiation Patterns 64
3.8.1 Field on the Refl ectarray Elements 66
3.8.2 Radiation Patterns 68
3.8.3 Experimental Results 72
3.8.4 Gain Computation 73
References 74
4. Practical Design Approach 79
4.1 Element Effects and Selection 79
4.1.1 Element Refl ection Phase 79
4.1.2 Element Beamwidth 81
4.1.3 Element Bandwidth 82
4.1.4 Element Refl ection Effi ciency 82
4.1.5 Element Spacing 83
4.2 Path Length and Phase Delay Calculation 84
4.3 Radiation Pattern Calculation 85
4.4 Refl ectarray Geometry Design 86
4.5 Refl ectarray Power Handling 91
References 91
5. Broadband Techniques 93
5.1 Bandwidth Limitation by the Refl ectarray Element 93
5.2 Broadband Phase-Shifter Elements 95
5.2.1 Aperture-Coupled Patches 96
5.2.2 Variable-Sized Stacked Patches 97
CONTENTS vii
5.2.3 Other Refl ectarray Elements for Bandwidth
Improvement 99
5.3 Bandwidth Limitation by Differential Spatial Phase Delay 100
5.4 Broadband Techniques for Large Refl ectarrays 104
5.4.1 True Time Delay Refl ectarrays 106
5.4.2 Compensation of Phase Delay in a Frequency Band 108
5.4.3 Multifacet Refl ectarrays 112
References 116
6. Dual-Band Refl ectarray 119
6.1 Dual-Band with a Single-Layer Substrate 119
6.1.1 Circular or Dual-Linear Polarization with Two
Widely Separated Frequencies 119
6.1.2 Circular Polarization with Two Closely Separated
Frequencies 120
6.1.3 Linear Polarization with Two Widely Separated
Frequencies 121
6.1.4 Linear Polarization with Two Closely Separated
Frequencies 123
6.2 Dual-Band with Two-Layer Substrates 123
6.2.1 High-Frequency Elements above Low-Frequency
Elements 124
6.2.2 Low-Frequency Elements above High-Frequency
Elements 125
6.3 Multiband Refl ectarray with More than Two Frequencies 131
References 134
7. Recent and Future Applications 137
7.1 Infl atable/Thin-Membrane Refl ectarrays 137
7.1.1 X-Band 1-m Infl atable Refl ectarray 138
7.1.2 Ka-Band 3-m Infl atable Refl ectarray 139
7.2 Contoured Beam Refl ectarrays for Space Applications 143
7.2.1 Pattern Synthesis 145
7.2.2 Practical Designs 150
7.3 Multi-Beam Refl ectarrays 169
7.4 Amplifying Refl ectarray 177
7.5 Folded Compact Refl ectarray 182
viii CONTENTS
7.6 Cassegrain Offset-Fed Confi gurations 190
7.7 Very Large Aperture Applications 194
7.8 Beam Scanning Refl ectarrays 195
References 201
Index 207

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