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J Electromagn Eng Sci > Volume 10(1); 2010 > Article
Journal of the Korean Institute of Electromagnetic and Science 2010;10(1):39-44.
DOI: https://doi.org/10.5515/JKIEES.2010.10.1.039   
Design of a UWB Antenna with Band-Notch Function
Zeng Fanli, Jae-Won Lee, Chul-Hee Kim, Jae-Hoon Choi
Dept. of Electronics and Computer Engineering, Hanyang University
Abstract
In this paper, a compact wideband antenna with a band-notch function is proposed. It operates over the UWB band with a band-stop characteristic. To increase the impedance bandwidth, a ring-shaped radiator is used. By attaching a circular stub to the ring-shaped radiator, the band-notch performance is obtained. The proposed antenna operates over a frequency range from 2.7 GHz to 11 GHz to satisfy the 10-dB return-loss requirement and provides band-stop performance in the frequency band from 5.15 GHz to 6.1 GHz. Experimental results reveal that the proposed antenna exhibits good radiation performance and is suitable for UWB applications.
Key words: Band Notch, Circular Stub, Ring Radiator, UWB, WLAN

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