二维/三维可调纸基超材料天线

2D/3D tunable paper-based metamaterial antenna

为满足移动通信系统对多频段、小型化天线的设计需求,结合超材料的结构优势,基于折纸技术设计了一种二维/三维可调双波段纸基超材料天线。为了说明纸基天线易加工、低成本、易携带等特点,分别将导电银浆涂覆在不同纸基材料上制备了天线实物样机。仿真和测试结果表明,在二维和三维状态下,天线分别工作在2.45 GHz和1.40 GHz频率处,且通过调节内环折叠角度可实现工作频段的调控。此外,分别研究了二维和三维天线的辐射方向图。二维天线的主辐射方向与天线所在平面垂直,而三维天线的主辐射方向受内环折叠角度调控。所设计的纸基超材料天线为实现工作频段可切换的天线设计提供了新思路,在便携式移动终端、多波段通信等领域具有广阔的应用前景。

To meet the design requirements of multi-band and miniaturization antennas in mobile communication system,combined with the structural advantages of metamaterials,a 2D/3D tunable dual-band paper-based metamaterial antenna was designed based on origami technique.In order to illustrate the characteristics of the paper-based antenna,such as easy processing,low cost,and easy carrying,prototype antennas were fabricated by coating conductive silver on different paper-based materials.The simulation and measured results show that the antenna can operate at 2.45 GHz and 1.40 GHz in 2D and 3D states respectively,and the operating frequency band can be controlled by adjusting the folding angle of the inner ring.In addition,the radiation patterns of 2D and 3D antennas were studied respectively.The main radiation direction of the 2D antenna is perpendicular to the plane of the antenna,while the main radiation direction of the 3D antenna is controlled by the folding angle of the inner ring.The paper-based metamaterial antenna provides new ideas for antenna design to achieve switchable operating frequency bands and has a wide application in portable mobile terminal and multi-band communication.