A Fast Charging Icon-shaped Slotted Patch Antenna for Bluetooth/Wi-Fi/WiMAX Applications

This paper deals with a fast charging icon-shaped slotted antenna (FCISA) which is designed to operate at 2.536 GHz. This antenna covers the frequency band from 2.389 GHz to 2.6968 GHz which is applicable for 2.45 GHz Bluetooth (2.407 GHz to 2.484 GHz), 2.4 GHz Wi-Fi (2.407 GHz to 2.484 GHz), WiMAX rel 1 (2.3 GHz to 2.40 GHz) and WiMAX rel 1.5 (2.5 GHz to 2.69 GHz). The overall dimension of the antenna is $40\times 38\times 0.79mm^{3}$ which etched on Rogers RT 5880 ($\varepsilon_{r}$=2.2, $\delta$= 0.0009). The maximum gain and directivity of the antenna are 3.16 dB and 3.51 dBi respectively. The reflection coefficient of this antenna is -40.699dB with approximately unity VSWR (1.0186) which operates at a resonant frequency of 2.536 GHz. The radiation efficiency of the fast charging icon-shaped slotted antenna is always above 90%. Thus the antenna is quite appropriate for Bluetooth, Wi-Fi and WiMAX applications.