A Compact O-shaped Printed ACS fed Monopole Dual-band Antenna for 2.4 GHz Bluetooth and 5GHz WLAN/WiMAX Applications

In this research paper, a compact O shaped printed ACS fed monopole dual band antenna is proposed for the reduction of mutual coupling in addition with applications of 2.4GHz Bluetooth/WLAN, 4.9 GHz US public safety band and 4.776 GHz WLAN/WiMAX. It consists of an O- shaped radiating branch and a rectangular uniplanar ground plane, with dimensions of 20 x 12.5 x 1.6 m^3. In the design, proposed radiating structure has been printed on a low cost single layered substrate FR4. By properly tuning the radiating branches electrical lengths, two independent resonant frequencies can be obtained and tuned independently. The presented antenna also exhibits omnidirectional radiation patterns with acceptable peak gains for the desired 2.4 GHz Bluetooth band, 4.9 GHz US public band , 4.776 WLAN bands and 6.368 GHz WiMAX band applications.