This paper introduces the design and experimental analysis of an eight-port Ultra Wide Band (UWB)/Super Wide Band MIMO antenna with the with triple-band rejection characteristics. The proposed UWB design includes a square-shaped radiator and a shared partial ground with novel hexagonal-ring type fencing decoupling structure to achieve UWB and a high degree of isolation between radiating elements. The partial ground with hexagonal-ring type fencing is employed to achieve a broad impedance matching of 7.4 GHz (3.1–12 GHz), while the notch bands are realized at 5 GHz (4.6 to 5.9 GHz), 8 GHz (7.70–8.43 GHz), and 10.5 GHz (10.3–10.98 GHz) by using Substrate Integrated Waveguide(SIW) based metallic via integration of hexagonal and semi-hexagonal parasitic slot stub with radiator. The band notch band characteristics obtained autonomously without modifying antenna performance. The fabricated antenna is having a very compact size of $54\times 54$ mm${}^3$. The important antenna characteristics of proposed antenna, such as bandwidth (7.4 GHz), isolation (>20 dB), gain(0-7.5), efficiency(80%), radiation pattern, Envelop Correlation Coefficient(ECC)(0.015), Total Active Reflection Coefficient (TARC) and Channel Capacity Loss (CCL) are examined.

本文介绍了具有三频抑制特性的八端口超宽带 (UWB)/超宽带 MIMO 天线的设计和实验分析。所提出的 UWB 设计包括一个方形辐射器和一个共享的部分地，具有新颖的六角环型围栏去耦结构，以实现 UWB 和辐射元件之间的高度隔离。采用六角环型栅栏部分接地实现 7.4 GHz (3.1–12 GHz) 的宽阻抗匹配，而陷波频带在 5 GHz (4.6 至 5.9 GHz)、8 GHz (7.70–8.43 GHz) 实现), 和 10.5 GHz (10.3–10.98 GHz) 通过使用基于基板集成波导 (SIW) 的金属通过六角形和半六角形寄生槽存根与散热器的集成。在不修改天线性能的情况下自主获得的带陷波带特性。制造的天线具有非常紧凑的尺寸$54\times 54$毫米${}^{\mathrm{3个}}$. 拟议天线的重要天线特性，例如带宽（7.4 GHz）、隔离度（>20 dB）、增益（0-7.5）、效率（80%）、辐射方向图、包络相关系数（ECC）（0.015）、总计检查主动反射系数 (TARC) 和通道容量损失 (CCL)。