In this paper, a novel coplanar waveguide (CPW) fed dual band-notched ultra-wideband (UWB) antenna with circular slotted ground is proposed.In order to achieve two notched bands at 3.3-3.7 GHz for worldwide interoperability for microwave access (WiMAX) and 5.15-5.825GHz for wireless local area network (WLAN) respectively, a pair of bended dual-L-shape branches are attached to the slotted ground.By optimizing the lengths and positions of the branches, the desired notch-bands of WLAN and WiMAX can be achieved.The prototype of the proposed antenna was fabricated and tested.The simulated and measured results show good agreement over the ultra-wideband.Besides these mechanical features, such as compact in size, easy in fabrication, the proposed antenna also shows good characteristics in its radiation patterns and time-domain behaviors.So it is a nice candidate for modern UWB communication systems.
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Liu et al. (2013) studied this question.