Design of A Miniaturization Tri-band Slot Antenna for WLAN and WiMAX Application

In order to minimize the tri-band patch antenna, a slotting technique has been used, and a coplanar waveguide is fed. In the designed antenna, two U-shaped slots are grooved on the rectangular radiation patch, and the ground plane adopts angular structure. The experimental results show that the operating bands of the antenna cover 2.1-2.8 GHz, 3.3-3.9 GHz and 4.9-7.1 GHz, which is suitable for the WLAN and WiMAX systems.