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International Journal of Antennas and Propagation - Volume 2015 2015, Article ID 319894, 7 pages -

Research Article

School of Computer and Information, Hefei University of Technology, Hefei 230009, China

Department of Computer Science, Qilu Normal University, Jinan 250202, China

Received 27 September 2014; Revised 22 December 2014; Accepted 26 December 2014

Academic Editor: Renato Cicchetti

Copyright © 2015 Bin Liu 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 novel multiband antenna with an unbroken metal rim for wearableapplications is presented. In order to achieve a wideband behavior, minimizing at thesame time the size of the clearance area on the antenna ground plane, a novel feedingstructure is proposed. This is achieved by connecting the metal rim to the groundplane thus allowing generating one lower-frequency resonance without occupying alarge area. An additional resonance is then obtained using a suitable shorting patch. Inthis way, the proposed antenna presents a broadband behavior, while the width of theclearance area on the ground plane is of only 2 mm. The antenna performances infree-space and on a human phantom simulating a human body are analyzed by meansof numerical simulations. Finally, the specific absorption rate SAR is analyzed toestablish the antenna reliability in wearable applications. The experimental resultsdemonstrate superior and stable performances of the metal-rimmed antenna when it isemployed in wearable applications.

Autor: Bin Liu, Jianghong Han, Songhua Hu, and Li Zhang



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