In this manuscript, four-port multiple-input-multiple-output (MIMO) superwideband antenna with mitigation of interfering bands is reported. The presented antenna comprises four identical patches which are placed orthogonal to each other. Rectangular ground plane to placed below the radiating patch forming monopole configuration and reduces the overall size of the antenna. Size reduction of antenna also has no change in wide operating bandwidth of the proposed antenna and interfering bands. Interfering bands which include WiMAX, LTE43 and WLAN are suppressed by using T-C shaped stubs/slots on the radiating patch and it is also worth noting that no separate isolation technique is used to achieve isolation between the radiating elements. Also, the inter-radiating patch maintains isolation of more than 20 dB with ECC (Envelope Correlation Coefficient) being less than 0.02 and TARC (Total Active Reflection Coefficient) less than 20 dB in operating bands. Single element, 2 × 2 MIMO, and 4 × 4 MIMO antenna is fabricated and confirms good agreement with simulated results.

在此手稿中，报告了减轻干扰频带的四端口多输入多输出（MIMO）超宽带天线。所示天线包括四个相同的贴片，它们彼此正交放置。将矩形接地平面放置在辐射贴片下方，形成单极配置，并减小了天线的整体尺寸。天线尺寸的减小在所提议的天线的宽工作带宽和干扰频带方面也没有变化。通过在辐射贴片上使用TC形状的短截线/缝隙，可以抑制包括WiMAX，LTE43和WLAN的干扰带，并且还应注意，没有使用单独的隔离技术来实现辐射元件之间的隔离。也，辐射贴片在工作频带中的ECC（包络相关系数）小于0.02，而TARC（总有源反射系数）小于20 dB时，保持了20 dB以上的隔离度。制作了单元素2×2 MIMO和4×4 MIMO天线，并与仿真结果确认了良好的一致性。