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International Journal of Antennas and Propagation
Volume 2014, Article ID 349516, 8 pages
http://dx.doi.org/10.1155/2014/349516
Research Article

Dual-Polarized Crossed Bowtie Dipole Array for Wireless Communication Applications

1National Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi’an, Shaanxi 710071, China
2School of Physics and Optoelectronic Engineering, Xidian University, Xi’an, Shaanxi 710071, China
3School of Electronic Engineering, Xidian University, Xi’an, Shaanxi 710071, China

Received 5 July 2014; Revised 2 October 2014; Accepted 10 October 2014; Published 26 November 2014

Academic Editor: Duixian Liu

Copyright © 2014 Zhi-Ya Zhang 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.

Abstract

A dual-polarized array with downtilted radiation patterns is proposed for wireless communication applications. The proposed dual-polarized antenna element achieves an enhanced impedance bandwidth and compact dimensions by introducing a parasitic circular patch and vertical metal cylinders, which is a good candidate for radiating elements in base station antennas. By optimizing the amplitude and phase distribution along the feed, a radiation pattern with a downtilted angle is obtained. The dual-polarized array antenna achieves an impedance bandwidth for VSWR 1.5, covering the frequency bands for 3G/LTE systems. Moreover, the proposed array achieves high port isolation, the stable antenna gain over the entire operating band. Therefore, the proposed array antenna is very suitable for potential wireless communication applications. A prototype has been manufactured and measured. The measurements, that match the design objectives, are also presented.