一种多轨道角动量模行波谐振腔天线

为解决当前轨道角动量天线难以小型化和多模工作的问题，推进轨道角动量在无线通信领域的实际应用，用谐振腔本征模理论成功设计、加工并测量了一种基于环形基片集成波导谐振腔的多轨道角动量模天线．经仿真分析和实际测量，该天线在4.1GHz和6.2GHz上谐振并分别产生了模数l=1和3的轨道角动量，与理论分析吻合较好．与现有的其他天线相比，该天线具有结构高度小型化、易集成、能利用单个腔体的多种模式产生多模轨道角动量的优点，在无线通信领域更具实用价值．

Multi-OAM-mode travelling wave resonant cavity antenna

To solve the problems of multimode-working and miniaturization faced with most current orbital angular momentum (OAM) antennas and promote the practical application of OAM in wireless communication, a novel multi-OAM-mode antenna based on the substrate integrated waveguide resonant cavity is designed, fabricated and measured according to the eigen mode theory of the resonant cavity. As simulation and measurement indicate, the proposed antenna successfully resonates and generates OAM with l=1 and 3 on 4.1 and 6.2GHz, respectively, which is in good agreement with theoretical analysis. Compared to existing ones, it is more compact in size and easier to integrate, with a unique ability to generate different OAM modes by multi-mode working of a single cavity, and more practical in wireless communication.