采用模态显著性方法的小尺寸的八元MIMO超材料天线,具有高隔离性
Tirado-Mendez Jose Alfredo1, Jardon-Aguilar Hildeberto2, Flores-Leal Ruben2
1Instituto Politécnico Nacional, Electrical Engineering Department, SEPI-ESIME-Zacatenco, Av. IPN S/N, Edif. 5., Ciudad de México 07300, Mexico.
Sensors (Basel, Switzerland)
|October 16, 2024
概括
本研究介绍了5G NR频段的紧型八元MIMO天线阵列,使用超材料共振器和电磁屏障实现超过20dB的隔离. 该设计为移动应用提供了显著的尺寸缩小和出色的性能.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 超材料是指一种超材料.
背景情况:
- 现代无线通信系统,特别是5G新无线电 (NR),需要具有高性能和小型化的天线阵列.
- 在距离较近的天线元件中实现高电磁隔离是多输入多输出 (MIMO) 系统的一个重大挑战.
研究的目的:
- 为n77和n78NR频段设计和验证一个对称的,缩小尺寸的八元MIMO天线阵列.
- 为了增强紧密包装的天线元件之间的电磁隔离.
- 与传统天线设计相比,实现显著的尺寸缩小.
主要方法:
- 使用八边形的双负元材料分环共振器 (SRR) 来减少散热器的大小.
- 采用模态显著性 (MS) 方法来分析电磁合.
- 使用带线实施的电磁屏障,以减轻合效应.
主要成果:
- 在使用SRR元材料的散热器中实现了超过50%的尺寸缩小.
- 在相邻的元素中达到超过20dB的隔离,在相反的元素中超过40dB的隔离.
- 证明了卓越的MIMO性能,外相关系数 (ECC) < 0.0001 和多样性增益 (DG) ≈ 20 dB.
结论:
- 拟议的对称,缩小尺寸的八元MIMO天线阵列有效地解决了5G NR中对紧和高性能天线的需求.
- 超材料SRR和电磁屏障的集成为增强密集天线阵列隔离提供了可行的解决方案.
- 阵列的小尺寸 (0.32 λ^2在3.5 GHz) 和卓越的性能指标使其适用于先进的MIMO应用.
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