A radiation pattern reconfigurable yagi antenna

A planar Yagi antenna with configurable radiation pattern is proposed in this paper. The single planar Yagi antenna structure with unidirectional radiation is designed firstly, and the radiation pattern reconfigurable antenna is consist of four planar Yagi antenna and a RF switch element. In detail, four single Yagi antennas are placed on four orthogonal orientation, and the RF switch can control which Yagi antenna connecting to the RF signal input, furtherly control the main radiation orientation. Finally, the antenna can be designed to cover the WIFI or Bluetooth communication.