Reducing Mutual Coupling of Closely Spaced Microstrip MIMO Antennas for WLAN Application
Reducing Mutual Coupling of Closely Spaced Microstrip MIMO Antennas for WLAN Application
复制标题
减少 WLAN 应用中近距离微带 MIMO 天线的互耦
DOI：
10.1109/lawp.2011.2140310
复制
发表时间：
2011-01-01
影响因子：
4.2
通讯作者：
Wang, Z. M.
中科院分区：
文献类型：
--
作者：
OuYang, J.;Yang, F.;Wang, Z. M.
本文介绍了一种有效的减少相互耦合的方法，用于5.8 GHz无线局域网MIMO应用中放置在有限尺寸地平面上的极其紧密的双元件微带天线。通过在微带天线之间的地面上采用简单的槽结构，可以实现高隔离。槽的位置、长度和宽度已经过优化，以最大限度地提高隔离效果。结果表明，在共用一个接地面的两个平行微带天线之间可以实现40 dB以上的隔离。当地平面尺寸为0.85λ0 × 0.55λ0时，天线中心到中心的间距为17.5 mm≈0.33λ0（并排1.6 mm≈0.031λ0）。与此同时，还制作了几个原型，并对其性能进行了测量，以验证所获得的基于IE3D力矩方法的仿真结果。
An efficient mutual coupling reduction method is introduced in this letter for extremely closely placed dual-element microstrip antennas positioned on a finite-sized ground plane for WLAN MIMO application at 5.8 GHz. High isolation can be achieved through a simple slot structure on the ground between the microstrip antennas. The position, length, and width of the slot have been optimized for maximizing the isolation. It is found that more than 40 dB isolation can be achieved between two parallel microstrip antennas sharing a common ground plane. The space distance of these antennas is 17.5 mm ≈ 0.33λ0 from element center to center (side by side of 1.6 mm ≈ 0.031λ0) when the ground plane size is 0.85λ0 × 0.55λ0. Along with this letter, several prototypes were fabricated, and their performances measured to validate the obtained IE3D moment method-based simulation results.