Magnetic Circuit Evaluation of Conductive and Near-field Noise Suppression Using Co-Zr-Nb Film
Magnetic Circuit Evaluation of Conductive and Near-field Noise Suppression Using Co-Zr-Nb Film
复制标题
使用 Co-Zr-Nb 薄膜抑制导电和近场噪声的磁路评估
DOI：
10.1109/tmag.2017.2705086
复制
发表时间：
2017
影响因子：
2.1
通讯作者：
Y. Endo
中科院分区：
文献类型：
--
作者：
S. Muroga;Y. Endo
本文讨论了利用磁路网络对导电噪声和近场噪声抑制的综合评价。所提出的磁路同时评估了铁磁共振（FMR）损耗和近场强度，与实测值吻合。成功地阐明了评价的有效性。结果表明，在本征FMR频率下，由于磁膜的磁阻最小，近场屏蔽效果最大。在FMR频率移位时，由于磁路谐振，退磁磁场使传导噪声抑制最大化，同时使近场屏蔽效果最小化。结果表明，所建立的磁网络模型对于发展磁膜式噪声抑制器的集成设计方法具有重要的实用价值。
This paper discusses the integrated evaluation of the conductive and near-field noise suppression using magnetic circuit network. The proposed magnetic circuit evaluated the ferromagnetic resonance (FMR) loss and near-field intensity simultaneously and agreed with the measured value. The validity of the evaluation is successfully clarified. It is clarified that the near-field shielding effectiveness is maximized at the intrinsic FMR frequency, because the reluctance of the magnetic film is minimized. It is also clarified that the conductive noise suppression is maximized and the near-field shielding effectiveness is simultaneously minimized at the shifted FMR frequency by the demagnetizing field, because the magnetic circuit resonates. These results demonstrate that the proposed magnetic network model is of great usefulness for developing the integrated design method of the magnetic film-type noise suppressor.