Abstract
A reconfigurable circular disc monopole UWB antenna with switchable two notched stop bands is presented. The antenna comprises a circular patch, 50 Ω microstrip feed line, partial ground plane with rectangular notch, and two U-shaped slots with folded arm. Predicated impedance bandwidth 2.78–12.8 GHz with dual notched stop bands 3.25–3.83 and 4.94–5.98 GHz are achieved for WiMAX and WLAN bands by cutting two U-shaped slots with folded arm on radiating patch, respectively. Furthermore, two switches are employed individually on two slots to make antenna switchable at notched stop bands. By changing the functionality of the switches, the antenna exhibits four different performances of UWB frequency range. The radiation pattern and gain is analyzed and results presented.
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