This communication reports significant isolation improvement utilizing planar suspended line (PSL) technique in ultra wideband (UWB) antenna for Multiple Input Multiple Output (MIMO) application. The antenna exhibits dual-band notched characteristic in Wireless Local Area Network (WLAN) band covering 5.45–5.85 GHz range; and in 7.15–7.95 GHz range for X-band downlink operations in satellite communication. Band-notching characteristics have been obtained by employing a single Elliptical Split Ring Resonator (ESSR) placed adjacent to each microstrip feed line of the radiating element and duo of “Y”-shaped strips employed within the circular ring of individual radiating elements. Two elements antenna occupy a compact space of 20 × 36 × 1.6 mm3 exhibiting huge measured impedance bandwidth (S11/S22 < −10 dB) covering 3.1–11.5 GHz and significant isolation of >21 dB in the almost entire band of operation. The electrical performance of antennas has been analyzed in terms of various MIMO parameters. Measured results demonstrate good accord with simulated results proving the competency of proposed antenna in high-density package systems and massive MIMO applications.

中文翻译：

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基于平面悬线技术的具有双频陷波特性的UWB-MIMO天线

该通信报告在用于多输入多输出 (MIMO) 应用的超宽带 (UWB) 天线中利用平面悬线 (PSL) 技术实现了显着的隔离改进。该天线在覆盖 5.45–5.85 GHz 范围的无线局域网 (WLAN) 频段中表现出双频段陷波特性；在 7.15–7.95 GHz 范围内用于卫星通信中的 X 波段下行链路操作。通过使用与辐射元件的每个微带馈线相邻放置的单个椭圆开口环谐振器 (ESSR) 和在单个辐射元件的圆环内使用的两个“Y”形条带，已经获得了带陷特性。两个单元天线占用 20 × 36 × 1.6 mm 的紧凑空间3表现出巨大的测量阻抗带宽（小号11/小号22< −10 dB) 覆盖 3.1–11.5 GHz，在几乎整个工作频段内具有 >21 dB 的显着隔离。已经根据各种 MIMO 参数分析了天线的电气性能。测量结果与仿真结果非常吻合，证明了所提出的天线在高密度封装系统和大规模 MIMO 应用中的能力。