【作者】 何斯彤； 冯强； 李龙；

【Author】 He Sitong;FENG Qiang;Li Long;Key Laboratory of High Speed Circuit Design and EMC of Ministry of Education,Xidian University;

【机构】 西安电子科技大学电子工程学院超高速电路设计与电磁兼容教育部重点实验室；

【摘要】 本文提出了一种针对均匀圆环天线阵列的低轴比圆极化涡旋波设计方法。该双环同心均匀圆环天线阵列工作频率在4.25 GHz,可以产生OAM模态为l=+1l=-1,l=+2,l=-2以及混合OAM模态的涡旋波,且各OAM模态涡旋波的发散角大小相同。通过对该双环同心均匀圆环天线阵列中各模态初始阵元的旋转角度进行优化,可以使涡旋波束的轴比性能明显提升,各OA M模态涡旋波束轴比小于3 dB的部分基本可以覆盖涡旋波束在观察面上的环状场强区域。更多还原

【Abstract】 In this paper,a method of low axial ratio circularly polarized vortex waves for uniform circular antenna arrays is presented.The double-ring concentric uniform circular antenna array operates at 4.25 GHz,and can generate vortex waves with OAM mode of I=+1 l=-1,L=+2,l=-2 and mixed OAM mode.The divergence Angle of each OAM mode is consistent.By optimizing the rotation Angle of the initial element of each mode in the doublering concentric uniform circular antenna array,the axial ratio performance of the vortex beam can be significantly improved.The parts of the OAM mode vortex beam with axial ratio less than 3 dB can basically cover the annular field intensity region of the vortex beam on the observation plane.更多还原