Polygon Patch Antenna for Bluetooth And UWB Applications With Single Notch Rejection Characteristics

In this article a parametric study of a compact antenna with Bluetooth and UWB applications is proposed. The antenna consists of a dodecagon (12 side polygon) shape patch with a rectangular ground plane on one side, a radiating patch on the other side of the FR4 substate (∊
r
=4.4) and a microstrip patch line that feeds to the radiating patch. Further a rectangular slot has been etched into the radiating patch and an inverted T filter has been stubbed to the radiating patch to reduce the interference from the existing IEEE WiMAX band from 3.34 to 3.76GHz. The size of the antenna is only 30x35x1.6mm
³
in dimensions. The proposed antenna is simulated on the HFSS software and the results obtained indicate that the antenna can be employed for the Bluetooth and UWB applications till 7.1GHz. In this region this antenna will have low losses below - 10dB and acceptable gain for the applications stated.