Eight-element UWB-MIMO array with three distinct isolation mechanisms
Eight-element UWB-MIMO array with three distinct isolation mechanisms
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DOI：
10.1049/el.2014.4199
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发表时间：
2015-02
影响因子：
1.1
通讯作者：
R. Saleem;Muhammad Bilal;K. Bajwa;M. F. Shafique
中科院分区：
文献类型：
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作者：
R. Saleem;Muhammad Bilal;K. Bajwa;M. F. Shafique
报道了一种用于超宽带通信的八元多输入多输出（MIMO）天线阵列。所提出的阵列包含八个天线单元，每个单元的中间具有环形槽和用于阻抗匹配的锥形馈线。在这些天线元件的背面引入有缺陷的地平面。此外，还引入了闭环频率选择面，以增强天线对之间的隔离。采用四带连接的圆弧去耦结构，提高了各天线单元之间的隔离度。这些去耦结构在大多数所需的UWB频谱上提供20 dB的隔离。提出的UWB-MIMO阵列尺寸为60 × 93 mm2。所建议的设计适合与系统包应用程序集成，并在所有四方提供易于连接的功能。
An eight-element multiple-input–multiple-output (MIMO) antenna array for ultra-wideband (UWB) communication is reported. The proposed array contains eight antenna elements having annular ring slots in the middle of each element and tapered feed lines for impedance matching. The defected ground planes are introduced on the back of these antenna elements. Moreover, closed-loop frequency selective surfaces are introduced to achieve enhanced isolation between antenna pairs. A quad-strip connected circular arc decoupling structure is also used to enhance the isolation among particular antenna elements. These decoupling structures provide isolation of 20 dB over most of the desired UWB spectrum. The proposed UWB-MIMO array has dimensions of 60 × 93 mm2. The proposed design is suitable for integration with system-in-package applications and provides ease of connectivity on all four sides.