In this article, a compact and high performance 4‐port ultra‐wideband multiple‐input multiple‐output antenna is presented. The proposed antenna is designed by using a novel technology which includes integration of four orthogonal octad‐shaped radiators, four D‐shaped ground planes, multi‐stub techniques and slot techniques. The overall size of the design is effectively miniaturized and the ultra‐wideband characteristics are achieved through feed line tapering and by inserting slot in the D‐shape ground structure. Moreover, tri‐band notch characteristics are achieved in the proposed design by embedding L‐shaped stubs in the octad radiating elements. This results in impedance bandwidth of 2.6‐12.2GHz with notched characteristics at bands ranging from 3‐3.7GHz, 5‐6GHz and 7.9‐8.3GHz. In addition, the antenna shows high isolation and good diversity performance in terms of Envelop Correlation coefficient, Diversity gain and Total active reflection coefficient. A good trade‐off of performance has achieved from the proposed design makes it best candidate for wireless communication applications.

中文翻译：

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具有三陷波频段特性的四端口UWB-MIMO天线小型化

本文介绍了一种紧凑的高性能4端口超宽带多输入多输出天线。拟议的天线是使用一种新颖的技术设计的，该技术包括集成四个正交的八角形辐射器，四个D形接地层，多桩技术和缝隙技术。有效地缩小了设计的整体尺寸，并通过减小馈线和在D形接地结构中插入插槽来实现超宽带特性。此外，通过将L型短截线嵌入八进制辐射元件中，可以在建议的设计中实现三频带陷波特性。这导致阻抗带宽为2.6-12.2GHz，并在3-3.7GHz，5-6GHz和7.9-8.3GHz的频带范围内具有缺口特性。此外，该天线在包络相关系数，分集增益和总有源反射系数方面显示出高隔离度和良好的分集性能。提议的设计实现了良好的性能折衷，使其成为无线通信应用的最佳选择。