Compact Triple-Band Monopole Antenna For Wlan/Wimax Applications

A novel compact monopole antenna for WLAN and WiMAX applications is presented. By properly etching two open-ended inverted L-shaped slots on the radiation patch, three separated resonances with effective bandwidth enhancement can be obtained. The overall dimension of the proposed antenna is only 29 (L) x 10 (W) x 1.6 (H) mm(3). Experimental results show that the antenna provides three impedance bandwidth of 80 MHz (2.4-2.48 GHz), 420 MHz (3.28-3.7 GHz) and 600 MHz (5.23-5.83 GHz). Good radiation patterns and applicable gains are also obtained across the operating bands. The proposed antenna is thus suitable for wireless communications systems.