一种平面型和低剖面型准八木方向图可重构5G天线

本发明公开了一种平面型和低剖面型小型化准八木方向图可重构5G天线，涉及小型化5G天线和sub 6GHz应用技术领域。本发明采用新型可重构准八木结构，具体以偶极子天线作为激励源天线，通过容型加载反射器实现对激励源的反射作用，形成定向辐射；同时形成容型加载，实现了小型化设计；通过控制二极管状态即可实现前向定向、全向和后向定向非对称辐射方向图的切换。并且通过在此基础上放置人工相移表面，进行三波束定向扫描，从而实现低剖面方向图可重构天线，能够满足不同应用场景的性能需求，具有天线尺寸小，天线工作带宽宽、天线辐射效率高、天线波束覆盖宽、适合室内广角域通信、易于生产应用、同时电控方案灵活快速响应稳定性高等优点。 The invention discloses a planar and low-profile miniaturized quasi-yagi directional diagram reconfigurable 5G antenna, and relates to the technical field of miniaturized 5G antennas and sub 6GHz application. A novel reconfigurable quasi-yagi structure is adopted, specifically, a dipole antenna serves as an excitation source antenna, the reflection effect on an excitation source is achieved through a capacitive loading reflector, and directional radiation is formed; meanwhile, capacitive loading is formed, and miniaturization design is achieved; switching of forward orientation, omnidirectional orientation and backward orientation asymmetric radiation patterns can be realized by controlling the state of the diod