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International Journal of Antennas and Propagation
Volume 2014, Article ID 195749, 4 pages
Research Article

Compact Dual-Band Dipole Antenna with Asymmetric Arms for WLAN Applications

1Department of Physics, National Kaohsiung Normal University, Kaohsiung 802, Taiwan
2Department of Mathematic and Physical Sciences, R.O.C. Air Force Academy, Kaohsiung 820, Taiwan
3Department of Electronic Engineering, National Kaohsiung Normal University, Kaohsiung 802, Taiwan

Received 6 January 2014; Accepted 12 February 2014; Published 17 March 2014

Academic Editor: Yingsong Li

Copyright © 2014 Chung-Hsiu Chiu 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.


A dual-band dipole antenna that consists of a horn- and a C-shaped metallic arm is presented. Depending on the asymmetric arms, the antenna provides two −10 dB impedance bandwidths of 225 MHz (about 9.2% at 2.45 GHz) and 1190 MHz (about 21.6% at 5.5 GHz), respectively. This feature enables it to cover the required bandwidths for wireless local area network (WLAN) operation at the 2.4 GHz band and 5.2/5.8 GHz bands for IEEE 802.11 a/b/g standards. More importantly, the compact size (7 mm × 24 mm) and good radiating performance of the antenna are profitable to be integrated with wireless communication devices on restricted RF-elements spaces.