At microwave frequency, J. B. Pendry realized such materials using periodic structures consisting of an array of split-ring resonators (SRRs) that exhibit a negative permeability, and an array of metallic printed lines (or rods) that exhibit a negative permittivity.
Pendry第一次提出了在微波频段的实现结构,周期排列的开口环谐振器(SRR)可以实现负磁导率,周期排列的金属线可以实现负介电常数。
参考来源 - 左手媒质结构的实现研究与仿真·2,447,543篇论文数据，部分数据来源于NoteExpress
There are no formulas with negative permeability in classical textbooks of electromagnetism.
在目前的有关电磁理论的教科书中，没有这方面现成的公式。
Compared with regular material, it has some unusual parameters value, simultaneously negative permeability and permittivity.
与常规材料相反，它具有同时为负的介电常数和磁导率，进而具有负的折射系数。
In recent years, a complicated artificial material with negative permittivity and negative permeability has attracted much attention theoretically and experimentally.
最近几年，一种具有负介电常数和负磁导率的人工复合材料在理论与实验上引起了广泛关注。
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