A Compact Multimode OAM Antenna Using Sequentially Rotated Configuration
A Compact Multimode OAM Antenna Using Sequentially Rotated Configuration
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采用顺序旋转配置的紧凑型多模 OAM 天线
DOI：
10.1109/lawp.2021.3121134
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发表时间：
2021
影响因子：
4.2
通讯作者：
Wen Wu
中科院分区：
文献类型：
--
作者：
Tianzi Zhang;Jun Hu;Qiyun Zhang;Di Zhu;Yibo Ma;Bentong Lin;Wen Wu
对于轨道角动量的多重光束，我们提出了一种由顺序旋转的圆极化（CP）三角形斑块组成的双环同心均匀圆阵列。一般来说，CP天线的旋转使馈电网络没有窄带移相器。进一步的研究还表明，元件的CP性能和旋转参数（包括方向和中心）是关键因素。此外，采用三角形贴片使阵列更紧凑，带宽更宽。设计并制作了一个半径仅为0.76 λ0的12单元演示。模拟和测量结果表明，它可以在x波段同时发射−1和−2模式的圆极化涡旋波，其带宽约为8.7%。
For multiplex beams of orbital angular momentum, we propose a two-looped concentric uniform circular array consisting of sequentially rotated circular polarization (CP) triangle patches. Generally speaking, the rotation of the CP antenna makes feeding networks free of narrowband phase shifters. Further investigations also reveal that CP performances of elements and the rotation parameters (including directions and centers) are critical factors. Moreover, adopting the triangle patches makes the array compact and wideband. A demonstration with 12 elements is designed and fabricated, whose radius is only 0.76 λ0. Simulations and measurements suggest that it could emit circularly polarized vortex waves of modes −1 and −2 at the X-band simultaneously, and its bandwidth is about 8.7%.