Mrs. Priyalaskhmi.B, Sheena Agrawal
The antenna proposed in this paper is a printed dual band monopole antenna for UWB and Bluetooth applications with WLAN band notch characteristics to remove the interferences between UWB and WLAN systems. The proposed antenna is small, low cost and can be easily integrated into existing systems. It has a fork shaped radiating element fed by a 50 ohm micro strip line. Dimensions of the central arm govern the Bluetooth band while dimensions of the Ushaped monopole govern the UWB band. A pair of Lshaped slots is etched on the ground to obtain the WLAN band notched characteristics. Adjusting the total length of the L-shaped slot in the ground plane , the desired band notched frequency can be controlled to minimize the potential interferences between the UWB system and the WLAN system. The proposed antenna is designed and simulated using HFSS v3 software and the characteristics are plotted. The dimensions are varied to get the desired radiation and rejected bands. The proposed antenna is then fabricated on FR4 substrate and measurements are carried out. The measured and simulated results are compared to confirm the design.
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