Dual-Band Dual-Polarized Compact Bowtie Antenna Array for Anti-Interference MIMO WLAN

Smart antennas have received increasing interest for mitigating interference in the multiple-input-multiple-output (MIMO) wireless local area network (WLAN). In this paper, a dual-band dual-polarized compact bowtie dipole antenna array is proposed to support anti-interference MIMO WLAN applications....

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2014-01, Vol.62 (1), p.237-246
Main Authors: Zheng, Wen Chao, Zhang, Long, Li, Qing Xia, Leng, Yi
Format: Article
Language:English
Subjects:
Antenna array
Antenna arrays
Antennas
anti-interference
Applied sciences
Arrays
bowtie
Business and industry local networks
compact
Couplings
Dipole antennas
dual-band
dual-polarization
Exact sciences and technology
MIMO
Networks and services in france and abroad
Radiocommunications
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Wireless LAN
WLAN
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Summary:Smart antennas have received increasing interest for mitigating interference in the multiple-input-multiple-output (MIMO) wireless local area network (WLAN). In this paper, a dual-band dual-polarized compact bowtie dipole antenna array is proposed to support anti-interference MIMO WLAN applications. In the antenna array, there are 12 antennas, six for horizontal polarization and six for vertical polarization. In order to achieve dual linear polarizations and beam switching, six horizontal antennas are placed in a sequential, rotating arrangement on a horizontal substrate panel with an equal inclination angle of 60 ° to form a symmetrical structure, while the other six antennas for vertical polarization are inserted through slots made on the horizontal substrate panel. Furthermore, six pairs of meandered slits are introduced to reduce the mutual coupling between horizontal antennas in the lower band. A prototype of the array with a dimension of 150 × 150 × 60 mm 3 is manufactured and exhibits the characteristics of high isolation, good front-to-back ratio, and average gains of 4.5 and 5 dBi over the 2.4- and 5-GHz band, respectively. The MIMO performance of the array is analyzed and evaluated by mutual coupling, the total active reflection coefficient (TARC) and the envelope correlation coefficient. The anti-interference capability of the array is also investigated by the experiment.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2287287