A compact multiple-input–multiple-output antenna is presented for Ultra Wide Band (UWB) applications. The antenna consists of two separate modified elliptical patches, two separate ground planes including a triangular slot and a step slot for better accommodation of impedance matching, and also separate feed lines for each port. In this design, it has been attempted to isolate the ports by separating the ground planes and placing the feedlines facing each other. Also, by applying a rectangular parasitic element between two radiation patches, the isolation between the two ports has improved. The antenna is made of FR4 as substrate with a thickness of 0.8 mm and the total size of 30 × 26 mm. In this structure, antenna port-1covers the frequency band of 2.85–12.95 GHz and antenna port-2 covers the frequency band of 4.01–11.47 GHz. The measured results show good isolation (less than −18 dB) between the two ports.

提出了一种紧凑的多输入多输出天线，适用于超宽带（UWB）应用。天线由两个单独的修改椭圆形贴片，两个单独的接地平面（包括一个三角形槽和一个阶梯槽）组成，以更好地适应阻抗匹配，并且每个端口都有单独的馈线。在这种设计中，已经尝试通过分离接地平面并使馈电线彼此面对来隔离端口。而且，通过在两个辐射贴片之间施加矩形寄生元件，两个端口之间的隔离得到了改善。天线由FR4制成，厚度为0.8 mm，总尺寸为30×26 mm。在这种结构中，天线端口1覆盖2.85–12.95 GHz的频带，天线端口2覆盖4.01–11.47 GHz的频带。