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International Journal of Antennas and Propagation
Volume 2015, Article ID 341080, 7 pages
Research Article

An Open Slot Antenna with Bandwidth Extension for WLAN/UWB Applications

1School of Physics and Optoelectronic Engineering, Xidian University, Xi’an, China
2Institute of China Electronic System Engineering Corporation, Beijing, China
3Beijing Institute of Spacecraft System Engineering, Beijing, China

Received 11 July 2014; Revised 20 August 2014; Accepted 8 September 2014

Academic Editor: Renato Cicchetti

Copyright © 2015 Jing-Ya Deng 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.


An open slot antenna with extended bandwidth for WLAN and UWB applications is proposed. The radiating structure is composed of a rectangular microstrip patch antenna exciting an L-shaped slot etched on the ground plane. The feed position is optimized to get better impedance match for the higher range of the UWB spectrum, while a step in the slot, realized in the ground plane, is employed to extend the lower limit of the bandwidth so as to cover the 2.4 GHz WLAN frequency band. Using these design solutions the antenna bandwidth is successfully extended to 140% so as to cover both the WLAN and the UWB spectrum.