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Analysis of the band‐stop techniques for ultrawideband antenna

Two band‐stop techniques for UWB antenna design are suggested in this article. The proposed antennas have wide bandwidth enough to cover UWB services along with the band‐stop characteristic for 5 GHz WLAN band. By inserting an U‐shaped slot or attaching an inverted Y‐shaped short‐circuited stub, the band‐stop characteristic is obtained. Prototypes of the proposed antennas are implemented and the parametric studies of the two band‐stop techniques are performed. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49:1058–1062, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22363