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A compact folded loop antenna for LTE/GSM band mobile phone applications

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3 Author(s)
Chien-Wen Chiu ; Department of Electronic Engineering, National Ilan University, Ilan City, Ilan-260, Taiwan, R.O.C. ; Chih-Hao Chang ; Yu-Jen Chi

This paper presents a multiband meandered loop antenna presently being used in LTE/WWAN systems for smart phone applications. The proposed antenna which features a meandered folded-loop generates two resonance modes in the LTE/GSM bands. The mode characteristic is characterized as a parallel monopole-like mode combined with a PCB ground plane mode. By using an inverted-L-shape capacitively-coupled element connected to the feed port on the backplane, the impedance bandwidth is broadened to cover LTE700/GSM850/GSM900/PCS/UMTS/LTE2300 bands. The simulation performed in this research used a high frequency structure simulator (HFSS) to optimally design the antenna, and a practical structure was constructed for the test. Details of the proposed antenna parameters, including reflection coefficient, radiation characteristics, peak gain, and radiation efficiency are presented and discussed in this paper.

Published in:

Electromagnetics in Advanced Applications (ICEAA), 2010 International Conference on

Date of Conference:

20-24 Sept. 2010