Quadband planar PCB antenna for WLAN and mobile WiMAX applications

A quad band planar microstrip-line-fed printed circuit board (PCB) antenna for different applications is introduced in this paper. The proposed antenna can be used in mobile applications such as GSM 900 and DCS-1800. It can be also used for Bluetooth and wireless local area network (WLAN) applications at 2.4GHz. The antenna has good characteristics at 2.3 GHz and 3.5 GHz which enable it to be used for mobile WiMAX 2.3-2.4GHz applications and WiFi 2.4-2.45GHz applications. The antenna is built on RT/Duroid 5880 high frequency laminate with a finite ground plane on the other side of the substrate. Simulation results show that the antenna has good performance in all frequency bands of operation.