噪声抑制器是现代通信电路中抗电磁干扰的一种重要手段.介绍了磁性薄膜噪声抑制器噪声抑制机理:铁磁谐振和焦耳热损耗.综述了薄膜的电阻率、三维尺寸以及其他方面因素对其噪声抑制性能的影响规律,指出存在一个最佳薄膜电阻使得噪声损耗达到最大,电磁辐射达到最小,且在一定范围内,随着薄膜长度和厚度的增加、宽度的减小,薄膜的谐振频率逐渐提高,噪声的功率损耗逐渐加大,噪声抑制性能明显提高.
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