基于环形缝隙介质谐振器的OAM天线

OAM antenna based on traveling-wave ring resonator

利用轨道角动量（OAM）进行复用传输是目前的研究热点。复用需要多个模式同时工作,而当前OAM天线模式单一,无法复用。一种新型利用环形波的天线被证明可以携带2个模式的轨道角动量波束,2个端口同时馈电,并通过电桥网络移相,在20 GHz实现双模式轨道角动量复用,且仿真结果良好,通过增加双反射面结构,较好地提高天线的辐射效率。对该结构进行加工并测试,其S参数与远场方向图同仿真结果相似,实现了OAM双模式复用,具有一定的理论意义和使用价值。

Currently, the use of orbital angular momentum for multiplexing transmission becomes the focus of research. Multiplexing requires multiple modes to work at the same time, while the current OAM antenna mode is single and cannot be multiplexed. A new type of antenna using a ring wave is proved to be able to carry two modes of orbital angular momentum beams. The two ports are working at the same time and phase-shifted through the bridge network to achieve dual-mode OAM multiplexing at 20 GHz. The result is satisfied. By adding a double reflective surface structure, the radiation efficiency of the antenna is improved. The structure is processed and tested. The S-parameters and the far field patterns are similar to the simulation results. The OAM dual-mode multiplexing is implemented, which has certain theoretical significance and application value.