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International Journal of Antennas and Propagation
Volume 2016 (2016), Article ID 3976936, 8 pages
Research Article

Compact Antenna with Frequency Reconfigurability for GPS/LTE/WWAN Mobile Handset Applications

1Jiangsu Key Laboratory of Meteorological Observation and Information Processing and Research Center of Applied Electromagnetics of NUIST, Nanjing University of Information Science & Technology, Ningliu Road, Nanjing 210044, China
2Zhongda Hospital, Southeast University, Dingjiaqiao, Nanjing 210009, China

Received 12 September 2016; Revised 8 November 2016; Accepted 22 November 2016

Academic Editor: Paolo Burghignoli

Copyright © 2016 Lingsheng Yang 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 frequency reconfigurable antenna for mobile handset application is proposed in this paper. The antenna consists of an inverted L-shaped feeding strip, a shorter grounded strip, and a longer grounded strip which is connected with four inductors by using a single-pole four-throw RF switch. When we change the working states of the RF switch, the corresponding inductor is connected with the long grounded strip and different resonant modes of the antenna can be realized. The measured −6 dB impedance bandwidth of the presented antenna is 683–960 MHz and 1460–2820 MHz, which is able to cover the LTE700/GSM850/900 and GPS/DCS1800/PCS1900/UMTS2100/LTE2300/2500 bands. The antenna gain, radiation efficiency, and radiation patterns are also described in the paper.