【摘要】 本文设计了一个以多个开口波导所组成的环形阵列电磁涡旋波(OAM波)天线,由波导口上的同相口径场近似,经口面积分法,计算了OAM波束横截面上的辐射场幅度-相位分布,用Matlab软件进行可视化分析,并模拟OAM波天线各馈电波导单元存在缺陷时,即馈电幅值、馈电相位出现偏差时,对辐射特性和基于相位域(l-域)的传输效果的影响,该研究可在OAM天线性能预估、指标优化设计方面提供一系列重要依据。更多还原

【Abstract】 Multiple open ended waveguides are arranged in a ring to realize an OAM antenna, which is analyzed by the identical phase approximation on a single waveguide aperture and the aperture-integral method. The amplitude-phase distributions of the radiation field in the cross-section of the OAM beam are calculated and are visualized using Matlab software. Furthermore, the radiation field distortion, including amplitude-phase fluctuation, and the resulting phase information(l-information) based transmission deterioration, caused by the manufacturing defects of waveguide circular array elements, are examined. This research can provide some foundations for OAM antenna performance predictions and the related parameter optimizations.更多还原