论文名称为“V-band wideband circularly polarized endfire multibeam antenna with wide beam coverage”。作者提出一种新颖的具有宽轴比波束角的宽带端射圆极化天线单元；基于天线单元辐射口面表面电流分析，实现天线单元的宽带工作特性。此外，连接孔能够在基本不增加单元间距的情况下达到减小阵元互耦目的，以保证多波束天线波束覆盖以及轴比性能。该宽带圆极化多波束天线可实现 3dB 轴比带宽为 57GHz~73GHz（相对带宽 24.6%），并且能够达到±45°~±66°的波束覆盖范围，兼具较宽的轴比带宽和较宽的波束覆盖范围。该天线的设计方法和过程在文章中进行了详细介绍。工作主要完成人为夏飞扬，程钰间，吴亚飞，樊勇。

论文链接： https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8747383

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.