演講題目： Wideband Millimetre-Wave Waveguide Based Circularly Polarized Antennas
報告人： Xiaodong Chen, School of Electronic Engineering and Computer Science, Queen Mary University of London, London E1 4NS, UK.
時 間： 2019年5月24日 （星期五）上午10：00-11:00
地 點：南京市江甯開發區，秣周東路9号，無線谷 A3樓4層3412會議室
主辦單位：beat365正版唯一毫米波國家重點實驗室
IEEE AP-MTT-EMC Joint Nanjing Chapter
江蘇省電子學會天線與微波專委會
摘要：Millimetre-wave (mmWave) communication has recently attracted great interests as the next generation of high-data wireless link. The circular polarized(CP) antennas can offer several benefits in this application, such as good polarization match over a long distance link, multipath rejection and polarization diversity and duplex.
This paper introduces a family of wideband mmWave CP antennas based on waveguide structures. Two types of designs, i.e. antipodal linearly tapered slot antenna (ALTSA) and septum antenna can produce around 40% bandwidth for both axial ratio (AR) < 3 dB and S11 < −15 dB in W-band. When combined with Substrate-Integrated Waveguide(SIW), the ALTSA array can generate a high gain while the septum antenna array can be employed in the multi-beam application. Another type of septum antenna is designed to achieve dual circular polarization with 21% bandwidth for AR < 1.9dB in W-band.
