Design of Triband Antenna for WLAN and WiMAX Application

A triband antenna is designed, which is fed by coplanar waveguide (CPW), and operated at 2.45 GHz, 3.5 GHz and 5.2 GHz. To operate the three bands above, the antenna is grooved with three symmetrical L-shaped slots and one slot of rectangular ring. The CPW structure is used to reduce thickness. The overall dimension, 25 mm × 26 mm × 1.5 mm, is obtained. The designed antenna has been fabricated, and the experimental results show that it can work well in the frequency bands of WLAN and WiMAX.