ABSTRACT This paper presents a new design of a compact dual-band Multiple Input Multiple Output (MIMO) antenna with high isolation for WLAN and X-band satellite applications. The proposed antenna is realized using three slots: the first slot is used on the upper layer to create the second resonance frequency at 5.3 GHz and two symmetrical slots are etched on the bottom layer to enhance the impedance bandwidth of the two operating bands. In order to obtain a low mutual coupling, the two antenna elements have an orthogonal polarization. The simulated results show that the MIMO antenna has a high isolation (S21 ≤−22.5 dB) at the two desired bands with impedance bandwidths are about 4.15% (5.19–5.41 GHz) and 4.81% (7.30–7.66 GHz). In addition, the MIMO parameters like envelope correlation coefficient (ECC), diversity gain (DG), Total Active Reflection Coefficient (TARC), realized gain and efficiency are also analyzed.

中文翻译：

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基于正交极化的WLAN和X波段卫星高隔离度紧凑型双频MIMO天线设计

摘要 本文介绍了一种用于 WLAN 和 X 波段卫星应用的具有高隔离度的紧凑型双波段多输入多输出 (MIMO) 天线的新设计。所提出的天线使用三个缝隙实现：第一个缝隙用于上层以在 5.3 GHz 处创建第二谐振频率，在底层蚀刻两个对称缝隙以增强两个工作频段的阻抗带宽。为了获得低互耦合，两个天线元件具有正交极化。仿真结果表明，MIMO 天线在阻抗带宽约为 4.15% (5.19–5.41 GHz) 和 4.81% (7.30–7.66 GHz) 的两个所需频段具有高隔离度 (S21 ≤-22.5 dB)。此外，包络相关系数（ECC）、分集增益（DG）等 MIMO 参数，