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International Journal of Antennas and Propagation
Volume 2014, Article ID 892765, 9 pages
Research Article

Design of a Compact UWB Antenna with Triple Band-Notched Characteristics

1Shandong University of Science and Technology, Tai’an Campus, Taian 271019, China
2College of Electronic and Information, Nanjing College of Information Technology, Nanjing 210023, China

Received 24 January 2014; Accepted 25 May 2014; Published 12 June 2014

Academic Editor: Ahmed A. Kishk

Copyright © 2014 Qiang Wang and Yan Zhang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new compact ultra-wideband (UWB) antenna with triband-notched characteristics is presented. The structure of the proposed antenna is simple and symmetric. A modified ground is introduced to obtain a wide impedance bandwidth of 2.9–13.4 GHz with  dB. By inserting two arc-shaped slots in the radiation patch, two sharp bands of 3.3–3.7 GHz and 5.15–5.35 GHz are notched. The notch band of 7.25–7.75 GHz is achieved by etching a U-shaped slot in the ground plane. The notched bands can be controlled, respectively, while the characteristics of the proposed UWB antenna almost keep completely unchanged at the unnotched frequencies. Equivalent circuit models, surface current distributions, and input impedance are applied to analyze the principle of the proposed UWB antenna. Parametric studies are given. Simulated and measured results show that the proposed antenna has good impedance matching, stable radiation patterns, and constant gain.