Practical Antenna Design For Wireless Products

This comprehensive resource covers both antenna fundamentals and practical implementation strategies, presenting antenna design with optimum performance in actual products and systems. The book helps readers bridge the gap between electromagnetic theory and its application in the design of practical antennas in real products. Practical implementation strategies in products and systems will be addressed in order to design antennas in the context of actual product environments, including PCB layout, component placement and casing design. Practical design examples on wearable electronic products are presented with a systematic approach to designing antennas for actual products. The book introduces antenna fundamentals to provide the basic concepts and necessary mathematics on electromagnetic analysis, followed by advanced antenna elements. The concept of electromagnetic simulation is presented. The advantages and disadvantages of different numerical methods in antenna modeling are also discussed. Several commercial antenna design and simulation tools are introduced, allowing hands-on practice of antenna modeling and simulation. Practical Antenna Design for Wireless Products ......Page 1 Contents......Page 6 Preface......Page 10 Acknowledgments......Page 14 1.1 Introduction......Page 16 1.2.1 Basic Types of Antenna......Page 17 1.2.2 Multiband and MIMO......Page 21 1.3.1 Source of Radiation......Page 24 1.3.2 Characteristics of Radiation......Page 27 References......Page 34 2.2.1 Radiation Pattern......Page 36 2.2.2 Beam Solid Angle......Page 39 2.2.3 Radiation Power Intensity......Page 40 2.2.4 Directivity and Effective Aperture......Page 41 2.2.5 Aperture Concept, Effective Apertu......Page 42 2.2.6 Gain......Page 44 2.2.7 Polarization......Page 46 2.2.8 Efficiency......Page 49 2.2.9 Impedance Matching......Page 50 2.2.10 Friis Transmission and Receiving......Page 52 References......Page 54 3.2.1 Quarter-Wavelength Monopole or Hal......Page 56 3.2.2 Loop Antenna......Page 63 3.2.3 Patch Antenna......Page 67 References......Page 73 4.1 Introduction......Page 76 4.2.1 Inverted-L and Inverted-F Antennas......Page 77 4.2.2 Meandered Line......Page 82 4.2.3 Multiband Antenna......Page 84 4.2.4 Dielectric Loaded......Page 86 References......Page 90 5.1 Introduction......Page 94 5.2.1 MoM......Page 95 5.2.2 Differential Equation Techniques......Page 96 5.3 Antenna Simulation Tools......Page 98 5.3.1 Numerical Electromagnetics Code......Page 99 5.3.3 FEKO......Page 101 5.3.5 CST......Page 102 5.3.8 WIPL-D Pro......Page 103 5.3.9 AWR Microwave Office......Page 104 5.3.10 Antenna Magus......Page 105 5.3.11 AntSyn......Page 107 References......Page 108 6.1 Introduction......Page 112 6.2 Measuring Equipment......Page 113 6.3 Antenna Ranges......Page 114 6.5 Gain Measurement......Page 117 6.6 Directivity......Page 120 6.8 Phase Measurement......Page 121 6.9 Polarization Measurement......Page 122 6.10 TRP and TIS Measurements......Page 123 6.11 SAR Measurement......Page 125 References......Page 126 7.1 Introduction......Page 128 7.2 Impedance Matching......Page 129 7.3 Smith Chart......Page 130 7.4.1 Series Element......Page 133 7.4.2 Shunt Element......Page 136 7.4.3 Matching Topologies......Page 139 7.5.1 Inductor......Page 140 7.5.2 Capacitor......Page 142 7.6.1 Impedance Measurement with VNA......Page 146 7.6.2 Balanced or Unbalanced......Page 147 7.6.3 Ground Effect......Page 149 References......Page 155 8.1 Introduction......Page 158 8.2.1 Internal or External......Page 159 8.2.2 Polarization and Directivity......Page 160 8.2.3 Operating Frequency, Size, and Geo......Page 166 8.3 Implementation Considerations and St......Page 169 8.3.2 Antenna Location and Placement......Page 170 8.3.3 Ground Plane......Page 172 8.3.4 Enclosure......Page 174 8.3.5 Mechanical Design, PCB Design, and......Page 176 References......Page 184 9.1 Introduction......Page 188 9.2.2 Enabling Technologies......Page 189 9.3.1 Smarthome Applications......Page 191 9.3.2 Wearable Devices......Page 192 9.3.3 Commercial Application......Page 204 9.4.1 Fractal Antennas......Page 209 9.4.2 Polymer......Page 210 9.4.3 Metamaterials......Page 211 9.4.4 3-D Printed Antennas......Page 212 References......Page 213 About the Author......Page 218 Index......Page 220