In this article, six-port Multi-Band MIMO antenna is presented for 5G mobile phone applications. The proposed antenna array is designed by making six open-ended slots in the ground plane which is printed on the backside of 0.8 mm thick FR4 substrate. The proposed antenna operates in the frequency band 3.33 GHz–3.63 GHz (covers LTE band 42) with − 10 dB impedance bandwidth of 300 MHz. Nevertheless, for 3:1 VSWR (− 6 dB impedance bandwidth), the total bandwidth is 500 MHz from 3.3 to 3.8 GHz (includes LTE bands 43, 48, 49 and 52). The prototype of the six-element antenna array is fabricated and measured. The measured isolation is better than 16 dB without employing any decoupling techniques, making the antenna highly equipped for 5G mobile applications. MIMO parameters like Envelope Correlation Coefficient, and Peak Channel Capacity are measured. The robustness of the six-port MIMO antenna system is validated by estimating the user's hand effects and Specific Absorption Rate. Better agreement between the simulated and measured results exhibit, the proposed antenna is a promising candidate for future cellular applications.

本文介绍了适用于 5G 手机应用的六端口多频段 MIMO 天线。建议的天线阵列是通过在接地平面上制作六个开口槽来设计的，接地平面印在 0.8 毫米厚的 FR4 基板的背面。建议的天线在 3.33 GHz–3.63 GHz 频段（涵盖 LTE 频段 42）中运行，具有 300 MHz 的 − 10 dB 阻抗带宽。然而，对于 3:1 VSWR（- 6 dB 阻抗带宽），总带宽为 500 MHz，从 3.3 到 3.8 GHz（包括 LTE 频段 43、48、49 和 52）。制作并测量了六单元天线阵列的原型。在不采用任何去耦技术的情况下，测得的隔离度优于 16 dB，使天线非常适合 5G 移动应用。测量包络相关系数和峰值信道容量等 MIMO 参数。通过估计用户的手部效应和比吸收率来验证六端口 MIMO 天线系统的稳健性。模拟和测量结果之间更好的一致性表明，所提出的天线是未来蜂窝应用的有希望的候选者。