Compact multi-functional antennas for wireless systems

Compact multifunctional antennas are of great interest in the field of antennas and wireless communication systems, but there are few, if any, books available that fully explore the multifunctional concept. Divided into six chapters, Compact Multifunctional Antennas for Wireless Systems encompasses both the active and passive multifunctional antennas and components for microwave systems. It provides a systematic, valuable reference for antenna/microwave researchers and designers.

Beginning with such novel passive components as antenna filters, antenna packaging covers, and balun filters, the book discusses various miniaturization techniques for the multifunctional antenna systems. In addition to amplifying and oscillating antennas, the book also covers design considerations for frequency- and pattern-reconfigurable antennas. The last chapter is dedicated to the field of solar cell integrated antennas.

Inside, readers will find comprehensive chapters on:

Compact Multifunctional Antennas in Microwave Wireless Systems

Multifunctional Passive Integrated Antennas and Components

Reconfigurable Antennas

Receiving Amplifying Antennas

Oscillating Antennas

Solar cell integrated Antennas

Aimed at professional engineers and researchers designing compact antennas for wireless applications, Compact Multifunctional Antennas for Wireless Systems will prove to be an invaluable tool.

Author Notes

Eng Hock Lim, PHD, is currently an Assistant Professor in the Department of Electrical and Electronic Engineering at the Universiti Tunku Abdul Rahman.
Kwok Wa Leung, PHD, is a professor in the Department of Electronic Engineering at the City University of Hong Kong.

Preface	p. ix
1 Compact Multifunctional Antennas in Microwave Wireless Systems	p. 1
1.1 Introduction	p. 1
1.2 Microwave Components in Wireless Systems	p. 6
1.3 Planar and Nonplanar Antennas in Compact Wireless Systems	p. 7
1.3.1 Performance Parameters	p. 8
1.3.2 Planar Antennas	p. 14
1.3.3 Nonplanar Antennas	p. 16
1.4 Multifunctional Antennas and Microwave Circuits	p. 17
1.4.1 Active Antennas	p. 18
1.4.2 Passive Antennas	p. 19
1.5 Miniaturization Techniques for Multifunctional Antennas	p. 19
1.6 Design Processes and Considerations	p. 20
1.7 Design Tools and Software	p. 22
1.8 Overview of the Book	p. 24
References	p. 25
2 Multifunctional Passive Integrated Antennas and Components	p. 29
2.1 Development of Passive Integrated Antennas and Components	p. 29
2.2 Antenna Filters	p. 30
2.2.1 Dielectric Resonator Antenna Filter	p. 31
2.2.2 Other DRAFs	p. 46
2.2.3 Microstrip-Based Antenna Filters	p. 50
2.3 Balun Filters	p. 60
2.3.1 Ring Balun Filter	p. 60
2.3.2 Magnetic-Coupled Balun Filter	p. 64
2.3.3 Rectangular Patch Balun Filter	p. 65
2.4 Antenna Package	p. 67
2.4.1 DRA Packaging Cover	p. 70
2.4.2 Other Antenna Packages	p. 78
2.5 Conclusions	p. 80
References	p. 80
3 Reconfigurable Antennas	p. 85
3.1 Introduction	p. 85
3.2 Design Considerations and Recent Developments	p. 86
3.3 Frequency-Reconfigurable Antennas	p. 88
3.3.1 Frequency-Reconfigurable Slot-Loaded Microstrip Patch Antenna	p. 91
3.3.2 Frequency-Reconfigurable E-Shaped Patch Antenna	p. 93
3.4 Pattern-Reconfigurable Antennas	p. 98
3.4.1 Pattern-Reconfigurable Fractal Patch Antenna	p. 103
3.4.2 Pattern-Reconfigurable Leaky-Wave Antenna	p. 105
3.5 Multi-Reconfigurable Antennas	p. 109
3.6 Conclusions	p. 112
References	p. 115
4 Receiving Amplifying Antennas	p. 117
4.1 Introduction	p. 117
4.2 Design Criteria and Considerations	p. 118
4.3 Wearable Low-Noise Amplifying Antenna	p. 118
4.4 Active Broadband Low-Noise Amplifying Antenna	p. 128
4.5 Conclusions	p. 139
References	p. 142
5 Oscillating Antennas	p. 145
5.1 Introduction	p. 145
5.2 Design Methods for Microwave Oscillators	p. 145
5.2.1 Design Using S Parameters	p. 146
5.2.2 Design Using a Network Model	p. 147
5.2.3 Specifications of Microwave Oscillators	p. 147
5.3 Recent Developments and Issues of Antenna Oscillators	p. 149
5.4 Reflection-Amplifier Antenna Oscillators	p. 152
5.4.1 Rectangular DRAO	p. 152
5.4.2 Hollow DRAO	p. 158
5.4.3 Differential Planar Antenna Oscillator	p. 161
5.5 Coupled-Load Antenna Oscillators	p. 167
5.5.1 Coupled-Load Microstrip Patch Oscillator	p. 167
5.5.2 Patch Antenna Oscillator with Feedback Loop	p. 171
5.6 Conclusions	p. 180
References	p. 181
6 Solar-Cell-lntegrated Antennas	p. 185
6.1 Integration of Antennas with Solar Cells	p. 185
6.2 Nonplanar Solar-Cell-Integrated Antennas	p. 188
6.2.1 Solar-Cell-Integrated Hemispherical DRA	p. 189
6.2.2 Solar-Cell-Integrated Rectangular DRA	p. 201
6.3 Planar Solar-Cell-Integrated Antennas	p. 204
6.3.1 Solar-Cell-Integrated U-Shaped SPA	p. 208
6.3.2 Solar-Cell-Integrated V-Shaped SPA	p. 219
6.4 Conclusions	p. 223
References	p. 224
Index	p. 227

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Table of Contents