学术报告 | Wideband Millimetre-Wave Waveguide Based Circularly Polarized Antennas

发布者:孙威发布时间:2019-05-23浏览次数:53

演讲题目: Wideband Millimetre-Wave Waveguide Based Circularly Polarized Antennas
报告人: Xiaodong Chen, School of Electronic Engineering and Computer Science, Queen Mary University of London, London E1 4NS, UK.
时    间: 2019年5月24日 (星期五)上午10:00-11:00
地    点:南京市江宁开发区,秣周东路9号,无线谷 A3楼4层3412会议室
主办单位:东南大学毫米波国家重点实验室
                 IEEE AP-MTT-EMC Joint Nanjing Chapter
                 江苏省电子学会天线与微波专委会

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.