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Analysis of Planar Ultrawideband Antennas With On-Ground Slot Band-Notched Structures

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4 Author(s)
Yuan Dan Dong ; State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China ; Wei Hong ; Zhen Qi Kuai ; Ji Xin Chen

Planar ultrawideband (UWB) antennas with on-ground band-notched structures are studied in this paper. Two different slot resonators, which feature quarter-wavelength and half-wavelength configurations, are embedded into the arc shaped ground plane of the circular disk patch antennas in order to obtain the desired band-rejection around 5.8 GHz. Their principles and characteristics are analyzed and compared in detail providing designers with in-depth understanding and useful design information. By choosing the quarter-wavelength slot resonator, the first spurious stopband can be pushed up to 3 f 0 (f 0 stands for the center frequency of the notch) and this antenna retains a super wide working band which spans from 1.62 GHz to 17.43 GHz. Performance in both the frequency domain and time domain for this antenna has been investigated carefully. The transmission response of a transceiving antenna system and their corresponding transient analysis are discussed at the end of this paper.

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Antennas and Propagation, IEEE Transactions on  (Volume:57 ,  Issue: 7 )