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International Journal of Antennas and Propagation
Volume 2016, Article ID 1671273, 7 pages
http://dx.doi.org/10.1155/2016/1671273
Research Article

Multiband Printed Loop Mobile Phone Antenna for LTE/WWAN/GNSS Application

College of Information Engineering, China Jiliang University, Hangzhou 310018, China

Received 12 November 2015; Accepted 28 January 2016

Academic Editor: Ahmed A. Kishk

Copyright © 2016 Yuan Xu and Hao-Miao Zhou. 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.

Abstract

A multiband printed loop mobile phone antenna for LTE/WWAN/GNSS application is presented. It covers seven communication bands (VSWR < 3) and GNSS band (VSWR < 1.5). The so-called GNSS (global navigation satellite system) band includes COMPASS, GALILEO, GPS, and GLONASS. From the analysis of the structure, the coupled-fed antenna mainly consists of three parts: the feeding strip, shorted strip, and U-shaped parasitic coupling strip. The proposed antenna works in three resonant modes, respectively, at 860 MHz (0.25), 1620 MHz (0.5), and 2620 MHz (1). A solution is provided, by which the navigation antenna can be integrated into the communication main antenna to save space. The antenna not only can work in GSM850/900/1800/1900/UMTS2100/LTE2300/2500 bands but also covers the world’s four major navigation systems. Moreover, the proposed antenna can be easily printed on the circuit board without loading any lumped element and only occupies a small volume of 18 × 32 × 3 mm3, which is suitable for smartphone application. In addition, the redundant design of multinavigation system is quite favorable for the elimination of errors or shadow area caused by single navigation system, especially for outdoor investigation, national security, and so on.