Title: A Band-Notched UWB Monopole Antenna With High Notch-Band-Edge Selectivity
Authors: Chuang, Chao-Tang
Lin, Ting-Ju
Chung, Shyh-Jong
Institute of Communication Studies
Keywords: Band-notched antennas;bandstop filter;coupled open-/short-circuited stub;nonuniform short-circuited stub;notch-band-edge selectivity;ultrawideband (UWB)
Issue Date: 1-Oct-2012
Abstract: In this paper, a novel band-notched ultrawideband (UWB) monopole antenna with high notch-band-edge selectivity is proposed and demonstrated. The proposed antenna consists of a radiation patch and an embedded second-order bandstop filter. Using the same substrate area as a fundamental UWB antenna, a bandstop filter composed of a nonuniform short-circuited stub and coupled open-/short-circuited stub resonators, is designed into the fundamental antenna. A detail design procedure for the proposed antenna with a second-order maximally flat bandstop filter at 5.5 GHz is presented. As compared to the fundamental antenna, the proposed UWB antenna provides good notch-band suppression from 5.15 to 5.95 GHz, in which the normalized total radiated powers in the notch band are lower than -12 dB. Also, the proposed structure provides high band-edge selectivity and flat return loss in the notch band. The measured results, including the return loss and total radiated power, agree with the designed ones.
URI: http://dx.doi.org/10.1109/TAP.2012.2207327
ISSN: 0018-926X
DOI: 10.1109/TAP.2012.2207327
Volume: 60
Issue: 10
Begin Page: 4492
End Page: 4499
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