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International Journal of Antennas and Propagation
Volume 2014, Article ID 452160, 6 pages
Research Article

A Low-Profile WLAN Antenna with Inductor and Tuning Stub for Broadband Impedance Matching

1Planning and Budget Team, KEIT, 10F KOTECH Building, 305 Teheran-Ro, Gangnam-Gu, Seoul 135-080, Republic of Korea
2R&D Center, GoerTek Korea Co. Ltd, 607 A-dong Digital Empire B/D, 1556 Deogyeong-daero, Yeongtong-gu, Suwon, Gyeonggi-do 443-812, Republic of Korea
3R&D Center, WAVE TECH B/D, 15 iljik-ro 94-gil, Seoksu-dong, Anyang, Gyeonggi-do 430-040, Republic of Korea

Received 9 January 2014; Accepted 11 March 2014; Published 8 April 2014

Academic Editor: Wenbin Dou

Copyright © 2014 Woo-Su Kim 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.


This paper presents a low-profile multiband antenna suitable for wireless local area networks (WLANs), using a chip inductor and tuning stub for broadband impedance matching. The proposed antenna is compact and covers three bands: 2.4-GHz (2.400–2.484 GHz), 5.2-GHz (5.150–5.350 GHz), and 5.8-GHz (5.725–5.825 GHz). The measured 10-dB bandwidths are 12.0% (2.28–2.57 GHz) in the lower band for 2.4-GHz WLANs and 39.1% (4.81–7.15 GHz) in the upper band for 5 GHz-WLANs. The measured peak gain of the antenna is between 2.7 and 4.39 dBi and the radiation patterns are omnidirectional.