2D/3D tunable paper-based metamaterial antenna

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.