基于Butler矩阵馈电网络的三模OAM天线

2021 IEEE International Conference on Power Electronics, Computer Applications (ICPECA) Pub Date : 2021-01-22 DOI:10.1109/ICPECA51329.2021.9362674

Jing Yang, Jun Hu, Tianzi Zhang, Qiyun Zhang, Wen Wu

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引用次数: 0

摘要

提出了一种由Butler矩阵馈电的4块补片组成的$2\times2$均匀圆形阵列(UCA)，用于同时产生3种OAM模式。与其他在顶层有馈电网络的补片uca相比，该结构的单个元素由背面的矩阵馈电。下层馈电网络由5个90°混合耦合器、1个交叉耦合器和2个30°移相器组成。仿真和实测结果表明，该天线可产生三种OAM模式，工作频率为7.5GHz，回波损耗低于-10dB的带宽为10.7%。

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A Three-Mode OAM Antenna with a Butler Matrix Feeding Network

A $2\times2$ uniform circular array (UCA) consisting of four patches fed by a Butler matrix is proposed for simultaneously generating three OAM modes. Compared with other patched UCAs with feeding networks on the top layer, individual elements of the proposed structure are fed by a matrix on the backside. The feeding network designed on the lower layer is comprised of five 90° hybrid couplers, one cross couplers, and two 30° phase shifters. Both results of the simulation and the measurement illustrate that the proposed antenna can generate three OAM modes, which works at 7.5GHz and whose bandwidth of return loss below -10dB is 10.7%.

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2021 IEEE International Conference on Power Electronics, Computer Applications (ICPECA)

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