论文名称为“V-Band Wideband Circularly Polarized Endfire Multibeam Antenna With Wide Beam Coverage”。该工作基于基片集成波导结构，提出小型化毫米波宽带宽轴比波束宽度的圆极化单元，突破了现有工作难以应用于毫米波宽带大角度圆极化覆盖的难题。设计人员在现有端射偶极子的基础上，通过增加对偶极子偏移量调控以及引入缺口结构，进一步展宽了天线的轴比带宽以及轴比波束宽度。在单元设计基础上，提出了一款宽带宽覆盖的多波束天线阵，可应用于5G通信。工作主要完成人夏飞扬、程钰间、吴亚飞、樊勇。论文链接：https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8758956

Abstract—— A V-band wideband circularly polarized (CP) endfire multibeam antenna array with the wide beam coverage is presented in this letter. First, a wideband compact endfire CP element with the wide axial ratio (AR) beamwidth is proposed. The design procedure and working principle of the element are discussed in detail. Besides, connected holes are used to reduce the mutual coupling and improve the AR performance. After that, a wideband substrate integrated waveguide Butler matrix is designed to feed the antenna array. Finally, the multibeam antenna is fabricated, measured and investigated. The measured results demonstrated that the proposed multibeam antenna provides a wide −10 dB impedance bandwidth of 28.5% (55.5 to 74 GHz) and a wide 3 dB AR bandwidth of 24.6% (57 to 73 GHz). Additionally, a wide beam coverage ranging from 45°–66° is achieved. Good agreement achieves between measured results and simulated ones.

 Index Terms—Circularly polarized (CP), endfire, multibeam antenna, wideband, wide beam coverage.