Electromagnetic shielding properties of soft magnetic metal and ferrite composites for application to suppress noise in a radio frequency range
Electromagnetic shielding properties of soft magnetic metal and ferrite composites for application to suppress noise in a radio frequency range
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DOI：
10.1007/s10832-006-8566-4
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发表时间：
2006-12
影响因子：
1.7
通讯作者：
Yong Woon Yun;Sang Woo Kim;Gwang Yoon Kim;Yoon-Bae Kim;Y. Yun;K. Lee
中科院分区：
文献类型：
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作者：
Yong Woon Yun;Sang Woo Kim;Gwang Yoon Kim;Yoon-Bae Kim;Y. Yun;K. Lee
研究了软磁金属合金（Fe-Al-Si）薄片和Ni-Zn铁氧体复合材料的电磁屏蔽性能，以有效抑制宽带和高频噪声。在软磁复合材料中，随着Ni-Zn铁氧体含量的增加，反射损耗的最大值向高频移动。铁素体含量为50%和70%的复合材料表现出宽带吸收特性。宽带特性可能是由于两种复合材料的虚部磁导率和介电常数在 2 至 10 GHz 频率范围内重叠而导致的扩展谐振引起的。
Electromagnetic shielding properties of soft magnetic metal alloy (Fe-Al-Si) flakes and Ni-Zn ferrite composites for effective suppression of broadband and high frequency noise were investigated. In the soft magnetic composites, the maxima of reflection loss were shifted to high frequency with increase in content of Ni-Zn ferrite. The composites with content of 50 and 70% ferrite exhibited broadband absorptive characteristics. The broadband character- istics might be caused by the extended resonance due to an overlap between imaginary permeability and permittivity of the two composites over the frequency range from 2 to 10 GHz.