Two-port MIMO antenna is proposed for ultrawide band wireless applications with triple notch bands. The proposed antenna is offering the operating frequency band ranging from 3.1 GHz to 10.6 GHz. Three notch bands at 4.56, 7.25, and 9.08 GHz are introduced to eliminate the interference with exiting bands. Moreover, a prototype of the proposed structure is fabricated, and simulated results are validated with measured experimental results. The proposed antenna shows the almost stable radiation characteristics throughout the operating band with an almost stable gain of about 5 dBi. Mutual coupling between both ports is suppressed to the value of −25 dB within the operating frequency band. Diversity characteristics for a MIMO performance are analysed in terms of envelope correlation coefficient, total active reflection coefficient, diversity gain, multiplexing efficiency, and mean effective gain. The proposed antenna is easily integrable with the other MMIC devices as it carries a simple structure.

提出了两端口MIMO天线，用于具有三陷波频带的超宽带无线应用。拟议中的天线提供的工作频带范围为3.1 GHz至10.6 GHz。引入了三个分别在4.56、7.25和9.08 GHz的陷波频段，以消除对现有频段的干扰。此外，制造了所提出的结构的原型，并通过测量的实验结果验证了仿真结果。所提出的天线在整个工作频带中显示出几乎稳定的辐射特性，并且具有大约5 dBi的几乎稳定的增益。在工作频带内，两个端口之间的相互耦合被抑制为−25 dB的值。根据包络相关系数，总有效反射系数，分集增益，多路复用效率和平均有效增益。所提出的天线具有简单的结构，因此很容易与其他MMIC设备集成。