Directivity of Antenna Enhanced by Using Metasurface Structure

In order to enhance the directivity of antenna, a gap coupling technique, as well as the metasurface structure, have been used. The radiation patch, asymmetric Jerusalem radiation unit of the antenna is fed by an L-type power divider and by an H-slot feed network. Meanwhile, a metasurface structure as a reflection plate is located at the bottom. The back lobe has been obviously reduced, and the radiation characters of the antenna is improved obviously. Fabricated simple has been tested. The result shown our design available.