Abstract—A novel microstrip fed ultra-wideband (UWB) antenna with different band rejection techniques is presented in this paper. The antenna consists of a maple-leaf shaped radiator fed by a microstrip line with a finite ground plane on the other side of the substrate. The size of the UWB antenna is 30.5×35.5mm2 which is only about 0.3×0.35λ2 at 3GHz. The calculated impedance bandwidth of the proposed antenna ranges from 3GHz to 14GHz with relatively stable radiation patterns. Two different techniques have been implemented to achieve band-notch characteristic in the 5.0–6.0GHz WLAN frequency band. The first one uses an H-shaped slot cut away from the radiating patch while the other one uses two rectangular slits in the ground plane creating defected ground structure (DGS). 1.
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Abdel Razik Sebak (2009) studied this question.
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