A novel quad-port configuration CPW-fed MIMO antenna design with triangular PBG structures for 6G communications in the sub-terahertz band

IF 3 Q3 Physics and Astronomy

Results in Optics Pub Date : 2025-09-19 DOI:10.1016/j.rio.2025.100896

Nasredine Boujmil , Mohammed Fattah , Mohammed Mahfoudi , Wafae El Hamdani , Said Mazer , Moulhime El Bekkali

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Abstract

The race toward 6G networks necessitates innovative antenna designs to exploit the sub-terahertz (sub-THz) band’s extensive bandwidth. However, conventional antenna designs usually suffer from poor bandwidth, low gain, and insufficient power efficiency, which are required for emerging 6G applications needing ultra-high data rates, low latency, and massive connectivity. To address this problem in this paper, a compact coplanar waveguide (CPW) MIMO antenna with periodic PBG structures is proposed. Our approach incorporates a rectangular patch radiator that has been strategically modified with diagonal and U-shaped slots, further enhanced by triangular air holes in the polyimide substrate to achieve optimal impedance characteristics. The resulting quad-port configuration (2000 μm × 2000 μm × 75 μm) demonstrates exceptional performance across 0.1–1 THz. Its 776.73 GHz bandwidth qualifies its wideband capability to support ultra-fast 6G data rates, while an ECC of less than 0.006 and diversity gain approaching 10 dB ensure robust MIMO performance. With a peak gain of 9.04 dBi and 97 % radiation efficiency, the design supports efficient sub-THz operation, making it a strong candidate for 6G wireless communications, and advanced security sensing applications.

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基于三角形PBG结构的新型四端口cpw馈电MIMO天线设计，用于亚太赫兹频段6G通信

向6G网络的竞争需要创新的天线设计，以利用亚太赫兹（sub-THz）频段的广泛带宽。然而，传统的天线设计通常存在带宽差、增益低和功率效率不足的问题，这些都是需要超高数据速率、低延迟和大规模连接的新兴6G应用所需要的。为了解决这个问题，本文提出了一种具有周期PBG结构的紧凑共面波导（CPW） MIMO天线。我们的方法结合了一个矩形贴片散热器，该散热器经过对角线和u形槽的战略性修改，并通过聚酰亚胺基板上的三角形气孔进一步增强，以实现最佳阻抗特性。由此产生的四端口配置（2000 μm × 2000 μm × 75 μm）在0.1-1太赫兹范围内表现出卓越的性能。其776.73 GHz带宽使其具备支持超快6G数据速率的宽带能力，而低于0.006的ECC和接近10 dB的分集增益确保了稳健的MIMO性能。该设计具有9.04 dBi的峰值增益和97%的辐射效率，支持高效的亚太赫兹工作，使其成为6G无线通信和先进安全传感应用的有力候选者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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