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International Journal of Antennas and Propagation
Volume 2015 (2015), Article ID 801638, 9 pages
http://dx.doi.org/10.1155/2015/801638
Research Article

A Novel Miniaturized Dual Slant-Polarized UWB Antenna Array with Excellent Pattern Symmetry Property for MIMO Applications

1Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China
2MOBI Antenna Technologies (Shenzhen) Co., Ltd., Shenzhen 518057, China
3Harbin Institute of Technology, Harbin 150001, China

Received 30 June 2014; Accepted 4 September 2014

Academic Editor: Wenhua Chen

Copyright © 2015 Zhi Zeng 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 novel miniaturized 1 × 10 uniform linear dual slant-polarized UWB antenna array for MIMO base station is presented. The antenna array operates in the frequency band from 1710 to 2690 MHz with a 17.3–18.7 dBi gain in a size of 105 × 1100 × 37 mm. The array element is composed of two single-polarized dipoles evolved from bow-tie antenna with slots on them, which miniaturize the size of the antenna. The 10 array elements are fed through an air dielectric strip-line power splitter. Two parameters, the beam tracking and the beam squint, are presented to quantitatively describe the pattern symmetry property of the antenna. The simulated and measured radiation performances are studied and compared. The results show that the pattern symmetry property of the single antenna element has been improved about 24% compared with the former study, and the antenna array also provides excellent pattern symmetry property.