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科学家开发新技术,可使5G系统的频谱带宽翻倍

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2022-05-12 11:49:17 转载来源: 网络整理/侵权必删

与木材、铜或硅不同,拓扑绝缘体 (TI) 是一种奇特的物质状态。它表面是导电的,但是整体不导电


与木材、铜或硅不同,拓扑绝缘体 (TI) 是一种奇特的物质状态。它表面是导电的,但是整体不导电。这种独特的材料特性具有重大的科学意义,可用于一系列技术,包括无线通信、雷达和量子信息处理。

近日,圣路易斯华盛顿大学的科学家在一项新研究中,首次展示了在集成芯片上实现电磁拓扑绝缘体。

研究作者Nagulu说:“拓扑绝缘体具有非常有趣的特性,并且它们本身很有用。但是,当它们与非互易特性结合时,其真正潜力才会显现出来。”

非互易性确保了电磁 (EM) 波的单向传播。此属性可用于全双工通信,这是一种允许以有效方式同时使用相同频率传输和接收数据的方法,从而使频谱容量增加一倍。此外,如果波与介质内的任何畸形或不规则性接触,具有非互易特性的 TI 可防止由于反向散射而导致的信号强度衰减。

该团队使用精心设计的晶体管,在标准半导体 IC 上实现非互易性和拓扑绝缘特性,而无需特殊材料或极端条件。

这种微型集成芯片将 TI 的奇异领域与实际应用相结合。研究人员演示了如何将可重构集成电路应用于新兴的 5G 无线应用,例如多天线全双工无线通信和多天线脉冲雷达。

该研究论文题为“Chip-scale Floquet topological insulators for 5G wireless systems”,已发表在Nature Electronics上。

前瞻经济学人APP资讯组

论文原文:https://www.nature.com/articles/s41928-022-00751-9

标签: 科学家 开发 新技术 可使 5G 系统 频谱 带宽 翻倍


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