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A small planar 4G antenna with a coupled-fed monopole and a directed-fed monopole for mobile handset application

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4 Author(s)
Wen-Shan Chen ; Department of Electronic Engineering, Southern Taiwan University of Science and Technology, No. 1, Nan-Tai Street, YungKang Dist., Tainan City 710, Taiwan R.O.C ; Jing-Wei Wang ; Bau-Yi Lee ; Hung-Ying Lin

This paper proposes an eight-band LTE/WWAN antenna for mobile phone application. The proposed antenna, which has advantages of dual wide bands and small dimension, is composed of a meandered coupled-fed monopole that excites a fundamental mode at 718 MHz and a meandered directed-fed monopole that excites the other fundamental mode at 918 MHz. By adjusting the parameters of the proposed design, the two resonant modes gather to form a low operation band (690-975 MHz) based on the 6-dB return loss for LTE 700, GSM 850, and GSM 900 applications. The higher modes of the two resonant modes produce a high operation band (1600-2200 and 2268-3000 MHz) for GSM 1800, GSM 1900, UMTS 2100, LTE 2300, and LTE 2500 applications. The overall dimensions of the proposed antenna are 120×65×0.8 mm3 that consists of an antenna portion of 10×65 mm2 and a ground plane of 110×65 mm2. The antenna's operation bands and size are suitable to apply in smart phone.

Published in:

2012 Asia Pacific Microwave Conference Proceedings

Date of Conference:

4-7 Dec. 2012