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International Journal of Antennas and Propagation
Volume 2016, Article ID 6461805, 7 pages
Research Article

Compact Penta-Band Dual ZOR Antenna for Mobile Applications

1Metamaterial Electronic Device Research Center, Hongik University, Seoul 04066, Republic of Korea
2LG Electronics, Seoul 08500, Republic of Korea
3Department of Electronic Information and Communication Engineering, Hongik University, Seoul 04066, Republic of Korea

Received 5 February 2016; Accepted 17 May 2016

Academic Editor: Elena De Cos

Copyright © 2016 Jae-Gon Lee 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 compact penta-band dual zeroth order resonator (ZOR) antenna with band-stop filter is proposed for mobile applications. The ZOR antenna is designed with modified mushroom-like structures extended on nonground region to obtain good efficiency and broad bandwidth. This modified mushroom-like structure is confirmed as double negative (DNG) transmission line by full wave simulated dispersion relation. Moreover, a bended patch and a band-stop filter (BSF) are employed to increase efficiency and bandwidth, respectively. The length of each antenna is about at the resonant frequencies of 900 MHz and 1800 MHz, respectively. The overall dimension of the antenna is 54.4 mm (length) × 4 mm (width) × 5 mm (height). The total efficiencies in low and high bands are measured more than 40% and 70%, respectively.