电讯技术2018，Vol.58Issue(2)：197-203,7.DOI:10.3969/j.issn.1001-893x.2018.02.014
应用PO-AI方法分析加罩OAM天线的辐射特性
Radiation Characteristic Analysis of OAM Antennas Covered by Radomes Using PO-AI Algorithm
王茜 1刘晓春 2田俊霞 1张文武2
作者信息
- 1. 中国航空工业集团公司济南特种结构研究所,济南250023
- 2. 高性能电磁窗航空科技重点实验室,济南250023
- 折叠
摘要
Abstract
The Physical Optics-Aperture Integral (PO-AI) algorithm is employed to analyze the radiation property of an antenna generating the Orbital Angular Momentum(OAM) waves covered by a radome. The influence of the radome on the radiation properties,amplitude-phase distribution,and the purity of each OAM wave mode is estimated using the PO-AI algorithm. The accuracy and the efficiency of the algorithm are verified by the comparison of the PO-AI results with the experimental data provided by an available lit-erature. The variations in the amplitude-phase distribution of a circular open-ended waveguide array with different OAM mode orders caused by a hemispherical radome are investigated. On this basis,an ogive shaped radome with multilayer dielectric wall is analyzed,validating the flexibility of the PO-AI algorithm for more complex geometries. The numerical results show that the simulated radomes exert their more influ-ence on the amplitude distribution of higer order OAM wave modes. The numerical simulation also verifies that the PO-AI algorithm can predict the OAM wave distortion by the radomes with fast operational speed, contributing to the high-efficiency optimization of radome parameters.关键词
轨道角动量(OAM)天线/天线罩/物理光学-口面积分(PO-AI)算法/辐射特性分析Key words
orbital angular momentum (OAM) antenna/radome/physical optics-aperture integral (PO-AI) algorithm/radiation characteristic analysis分类
信息技术与安全科学引用本文复制引用
王茜,刘晓春,田俊霞,张文武..应用PO-AI方法分析加罩OAM天线的辐射特性[J].电讯技术,2018,58(2):197-203,7.
