About the Authors ix -- Preface xi -- 1 Introduction 1 -- 1.1 Motivation 1 -- 1.2 Background 4 -- 1.3 Chapter Overview 6 -- 2 Classifications on Dielectric Resonator Antenna 9 -- 2.1 Overview 9 -- 2.2 Dielectric Antenna Classifications 10 -- 2.3 Dielectric Material Classifications 13 -- 2.4 Summary 35 -- 3 Stacked Dielectric Resonator Antenna 40 -- 3.1 Overview 40 -- 3.2 Analysis Methods for Stacked DRA 46 -- 3.3 Stacked Wideband DRA Designs 53 -- 3.4 Stacked DRA with Passive Beam Steering 74 -- 3.5 Summary 86 -- 4 Dielectric Resonator Antenna Array 90 -- 4.1 Overview 90 -- 4.2 Pattern Diverse DRA 91 -- 4.3 DRA Array with Wide-Angle Beam Scanning 100 -- 4.4 DRA Array for Shaped Beam Synthesis 107 -- 4.5 Summary 120 -- 5 MIMO DRA with Improved Isolation 124 -- 5.1 Overview 124 -- 5.2 MIMO DRA Research Trends and Classifications 125 -- 5.3 High-Isolated MIMO DRA Design 136 -- 5.4 Summary 145 -- 6 3D Printed Dielectric-Based Antenna 150 -- 6.1 Overview 150 -- 6.2 3D Printed Antenna 152 -- 6.3 3D Printed Antennas with Complementary Structure 159 -- 6.4 3D Printed Finger Nail Antennas 174 -- 6.5 Summary 187 -- 7 Millimeter-Wave DRA and Array 191 -- 7.1 Overview 191 -- 7.2 mm-Wave DRA for UAV Satellite 192 -- 7.3 SIW Feeding Network for Antenna Array 202 -- 7.4 mm-Wave DRA Array for Base Station 208 -- 7.5 Summary 220 -- 8 Duplex Filtering DRA 224 -- 8.1 Overview 224 -- 8.2 Filtering Antenna 225 -- 8.3 Diplexer and Duplexer 233 -- 8.4 Duplex Filtering DRA Designs 238 -- 8.5 Summary 256 -- 9 Conclusion and Future Work 261 -- 9.1 Overall Summary 261 -- 9.2 Recommendations for Future Work 262 -- Appendix A Modes in Rectangular DRA 264 -- Appendix B Modes in Cylindrical DRA 270 -- Appendix C Modes in Hemispherical DRA 275 -- Appendix D Modes in Stacked DRA 279 -- Appendix E Modes in Irregular DRAs 283 -- Index 288.