Circularly Polarized Antennas

Professor Steven (Shichang) Gao is Chair of RF and Microwave Engineering at School of Engineering and Digital Arts, University of Kent, UK. He is Associate Editor of IEEE Transactions on Antennas and Propagation (2015-), a Distinguished Lecturer of IEEE Antennas and Propagation Society (2014-2016), General Chair of Loughborough Antennas and Propagation Conference (LAPC), UK, 2013, and Chair of Special Session on “Satellite Communication Antennas” in IEEE/IET International Symposium on Communication Systems and Networks, Poland, 2012, etc. He is a Keynote Speaker at AES'2014 (China, 2014), an Invited Speaker at IWAT'2014 (Sydney, 2014), SOMIRES'2013 (Japan, 2013), APCAP'2014 (China, 2014), etc. He is a Guest Editor of IEEE Transactions on Antennas and Propagation for a Special Issue on "Antennas for Satellite Communication"(April 2015), an Associate Editor of Radio Science (US), a member of the editorial boards of International Journal of Space Science and Engineering (US), IET Circuits, Devices and Systems (UK) and Chinese Journal of Radio Science (China). He is also the Editor for Wiley Book Series on "Microwave and Wireless Technologies". He is a Fellow of Institute of Engineering and Technology (IET), UK.He has two books including Space Antenna Handbook (Wiley, 2012) and Circularly Polarized Antennas (Wiley-IEEE, 2014), over 200 technical papers and several patents.His main areas of expertise are in antennas, smart antennas, phased arrays, MIMO, satellite antenna, RF/microwave/millimetre-wave/THz circuits and RF front ends (high-efficiency RF/microwave power amplifiers, filters), satellite communications, wireless power transfer, UWB radars, GNSS reflectometry, synthetic-aperture radars, remote sensing, electromagnetic modelling and small satellites.

• Preface ix Acknowledgements xiAbbreviations and Acronyms xiii1 Introduction to Circularly Polarized Antennas 11.1 Introduction 11.2 Antenna Parameters 21.3 Basic CP Antenna Types 71.4 Antenna Modelling Techniques 231.5 Typical Requirements and Challenges in CP Antenna Designs 241.6 Summary 25References 252 Small Circularly Polarized Antenna 292.1 Introduction 292.2 Basic Theory of Antenna Size Reduction 292.3 Small CP Patch Antennas 302.4 Small Helix, QHAs and PQHAs 462.5 Small CP Slot Antennas 532.6 Small CP DRAs 592.7 Other Small CP Antennas 632.8 Summary 66References 693 Broadband Circularly Polarized Antennas 733.1 Introduction 733.2 Broadband CP Microstrip Patch Antennas 733.3 Broadband Helix, QHAs and PQHAs 933.4 Spiral Antennas 1033.5 Broadband CP Slot Antennas 1063.6 Broadband CP DRAs 1163.7 Broadband CP Loop Antennas 1203.8 Other Broadband CP Antennas 1233.9 Summary 124References 1264 Multi-Band Circularly Polarized Antennas 1314.1 Introduction 1314.2 Multi-Band CP Microstrip Patch Antennas 1314.3 Multi-Band QHAs and PQHAs 1504.4 Multi-Band CP Slot Antennas 1584.5 Multi-Band CP DRAs 1714.6 Multi-Band CP Loop Antennas 1754.7 Other Multi-Band CP Antennas 1774.8 Summary 186References 1875 Circularly Polarized Arrays 1915.1 Introduction 1915.2 CP Patch Antenna Arrays 1915.3 CP Dielectric Resonator Antenna Arrays 2035.4 CP Slot Array Antenna 2105.5 CP Printed Reflectarrays 2225.6 Integrated CP Array and Active CP Array 2345.7 CP Array with Reconfigurable Beams 2435.8 Other CP Arrays 2525.9 Summary 258References 2586 Case Studies 2636.1 Introduction 2636.2 Dual-Band CP Patch Array for GNSS Reflectometry Receiver on Board Small Satellites 2636.3 Small Printed Quadrifilar Helix Antenna for Mobile Terminals in Satellite communications 2716.4 Printed Broadband CP Rectangular Bi-Loop Antenna for RFID Readers 2786.5 CP Reflectarray for Ka Band Satellite Communications 2846.6 Circularly Polarized Logarithmic Spiral Antenna with a Wideband Balun 2936.7 Summary 301References 303Index 305