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International Journal of Antennas and Propagation
Volume 2014 (2014), Article ID 629387, 7 pages
http://dx.doi.org/10.1155/2014/629387
Research Article

A CPW-Fed Dual-Band-Notched Antenna with Sharp Skirt Selectivity for UWB Applications

College of Physics & Electronic Information Engineering, Wenzhou University, Zhejiang 320535, China

Received 2 March 2014; Revised 25 May 2014; Accepted 30 May 2014; Published 23 June 2014

Academic Editor: Renato Cicchetti

Copyright © 2014 Dacheng Dong et al. 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.

Abstract

A coplanar waveguide- (CPW-) fed dual-band-notched antenna with sharp skirt selectivity for ultrawideband (UWB) applications is presented. The proposed antenna is composed of a radiant patch with a C-shaped slot and a C-shaped stub on the back surface of the substrate. By using the C-shaped slot and the C-shaped stub, dual-band-notched characteristics can be generated. In this way, a more practical and effective approach to design an UWB antenna with sharp notched-band-edge selectivity is developed. The measurement results show dual notched bands of 4.96–5.42 GHz and 5.71–5.91 GHz, which can reject the interference between IEEE 802.11a bands (5.15–5.35 GHz and 5.725–5.825 GHz) and UWB systems. The fabricated antenna shows good omnidirectional radiation patterns with acceptable gain and group delay.