Metaconductors with near-zero permeability is an incentive for the development of high-frequency passive components due to effective suppression of skin effect. In this work, an asymmetric multilayered structure is proposed to broaden the bandwidth of skin effect suppression while preserving a sufficient lower frequency limit of permeability compensation. Coplanar waveguide (CPW) transmission lines consisting of two ferromagnetic layers alternatively stacking with Cu layers were designed and fabricated. Near-zero permeability is obtained at two separated frequencies, which enables broadband eddy current canceling and resistance reduction. The measured results manifest a resistance reduction up to 46% at 11.1 GHz, compared to a Cu transmission line with the same dimensions, and a broad skin effect suppression band between 7.5 and 30.0 GHz, which is sufficient to cover the important 5G applications.

中文翻译：

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具有宽带集肤效应抑制功能的不对称超导体


具有接近零磁导率的超导体由于有效抑制集肤效应而成为高频无源元件发展的动力。在这项工作中，提出了一种不对称多层结构来拓宽趋肤效应抑制的带宽，同时保留足够的磁导率补偿频率下限。设计并制造了由两个铁磁层与铜层交替堆叠组成的共面波导（CPW）传输线。在两个分离的频率下获得接近零的磁导率，从而能够消除宽带涡流并降低电阻。测量结果表明，与相同尺寸的铜传输线相比，在 11.1 GHz 时电阻降低高达 46%，并且在 7.5 至 30.0 GHz 之间具有较宽的集肤效应抑制频带，足以覆盖重要的 5G 应用。