| 轨道角动量双模复用的远场增益及隔离度 |
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| 作者姓名： | 曹乐搬 周斌 卜智勇 兰云 |
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| 作者单位： | 1. 中国科学院上海微系统与信息技术研究所, 上海 200050;2. 中国科学院大学, 北京 100049 |
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| 基金项目： | 上海市自然科学基金（19ZR1467200）资助 |
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| 摘 要： | 基于均匀圆环阵列,研究其产生的携轨道角动量(OAM,orbital angular momentum)双模复用的涡旋电磁波.首先从理论上论述均匀圆环阵列可以产生携OAM涡旋电磁波,并提出3种不同结构的均匀圆环阵列,阵元的激励设置及传输增益的计算方法;其次从均匀圆环阵列中阵元的数量、阵列的半径及阵元的排列方式3个角度分别...
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| 关 键 词： | 均匀圆环阵列 OAM 模间干扰 远场增益 |
| 收稿时间： | 2019-06-01 |
| 修稿时间： | 2019-10-24 |
Far-field gain and isolation of orbital angular momentum dual mode multiplexing |
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| Authors: | CAO Leban ZHOU Bin BU Zhiyong LAN Yun |
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| Institution: | 1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Generating vortex electromagnetic waves carrying OAM (orbital angular momentum) dual-mode multiplexing based on a uniform circular array is studied. Firstly, it theoretically discusses that a uniform circular array can generate OAM vortex electromagnetic waves,three uniform arrays of different structures, excitation settings of array elements and calculation of transmission gain are proposed. Secondly, the influence of the generated OAM dual-mode multiplexed vortex electromagnetic wave on the far-field gain in the main axis direction is discussed from the angles of the array elements in the array, the radius of the array, and the arrangement of the array elements. Finally, the degree of inter-mode interference in OAM dual-mode multiplexing is studied from the arrangement of array elements. The simulation results show that the greater the number of array elements in the circular array,the greater the far-field gain on the main axis; the difference radius in the circular array has a less influence on the far-field gain on the main axis; compared with the single arrangement, the vortex wave generated by the uniform circular array combined by two different arrangement modes has larger far-field gain on the main axis and less inter-mode interference. |
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| Keywords: | uniform circular array OAM inter-mode interference far-field gain |
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