This article presents the design of a highly integrated twelve port ultra‐wideband (UWB) antenna array for multiple‐input multiple‐output (MIMO) communications. The proposed array consists of a unit cell element constructed using a circular arc structure excited by a simple microstrip line feed terminated by an arc‐like stub. The proposed unit cell antenna covers 3–9 GHz covering most of the third, fourth, and fifth generation communication frequencies. The 3D antenna array has an overall board size of 33 × 33 × 15 mm³ consisting of one horizontal board and two vertical boards. The vertical boards are interlocked and are directly positioned above the horizontal boards. Four antennas with dual feed excitation are deployed on the horizontal board while each vertical board is printed with two elements with single port excitation. Thus, a highly integrated twelve port antenna is realized with isolation better than 15 dB between each port. The prototype antenna offers both polarization and pattern diversity leading to enhanced MIMO performance.

中文翻译：

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新颖的十二端口八元UWB‐MIMO天线

本文介绍了一种用于多输入多输出（MIMO）通信的高度集成的十二端口超宽带（UWB）天线阵列的设计。所提出的阵列由使用圆弧结构构造的晶胞元素组成，该圆弧结构由简单的微带线馈电装置激励，该微带线馈电装置由类似弧的桩端部终止。拟议的单元蜂窝天线覆盖3-9 GHz，覆盖了第三，第四和第五代通信频率中的大部分。3D天线阵列的整体板尺寸为33×33×15 mm ³由一个水平板和两个垂直板组成。垂直板是互锁的，并且直接位于水平板上方。水平板上部署了四个具有双馈源激励的天线，而每个垂直板上都印有两个具有单端口激励的元件。因此，实现了高度集成的十二端口天线，每个端口之间的隔离度优于15 dB。原型天线同时提供极化和方向图多样性，从而增强了MIMO性能。