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A compact O-shaped printed ACS fed monopole dual-band antenna for 2.4GHz Bluetooth and 5GHz WLAN/WiMAX applications

In this research paper, a compact, novel O-shaped ACS fed dual-band monopole antenna for 2.4 GHz Bluetooth/WLAN, 4.9 GHz US public safety band and 5.0 GHz WLAN/WiMAX applications is presented and investigated. The proposed geometry consists of an O-shaped radiating branch, monopole-shaped radiating branch and a rectangular shaped uniplanar ground plane, which occupies an overall size of 20 × 12.5 × 1.6mm3. In the design, proposed radiating structure has been printed on a low cost single layared 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 of 2.4 GHz bluetooth band, 4.9 GHz US public band, 2.4/5.2/5.8 GHz WLAN bands and 5.5 GHz WiMAX band applications.