Abstract
To prevent interference problems due to existing nearby communication systems within an Ultra-wideband operating frequency, the significance of an efficient band-notched design is increased. Here, the band-notches are realized by adding U-shaped slots to UWB antennas. The size of the flat type band-notched UWB antenna is etched on 24×30 mm2 substrate. Two antennas are presented; one antenna is designed for single band-notch with one U-slot to cover the 5.15–5.825 GHz band. The second antenna is designed for dual band-notches using two U-slots to cover the 5.15–5.35 GHz band and 5.725–5.825 GHz band. The simulation shows that the proposed antenna achieves a wide bandwidth from 3 to 12 GHz with the dual band-notches successfully.
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