Yi Wang, Tongde Huang, Dongdong Ma, Peipei Shen, J. Hu, Wen Wu
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Ultra-wideband (UWB) Monopole Antenna with Dual Notched Bands by Combining Electromagnetic-Bandgap (EBG) and Slot Structures
A novel design technique, which combines mushroom-shaped electromagnetic-bandgap (EBG) structures and a slot together, is proposed for ultra-wideband (UWB) band-notched antenna. The implementation of the slot can not only create its own notched band, but also enhance the filtering performance at the other notched band generated by EBG structures. This is caused by the increased current density in the two ends of the slot. The location of the two notched bands are determined by the position and size of the EBG and the length of the slot, respectively. However, the parameters of the EBG structures and slot has little effect on the antenna performance. The simulated results demonstrate that the proposed antenna exhibits a good wideband radiation performance from 2.64 to 12.9 GHz along with two separated notched bands at WLAN (4.8-5.9 GHz) and X-band downlink satellite communication band (7.1-7.8 GHz). As a result, the proposed design is a promising candidate for modern UWB antennas.
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