This study investigates the relationship between filter inductor impedance and dimensional resonance of MnZn ferrite. Experimental results clarify that multiple factors affect inductor impedance resonances. These can be classified into three factors: the inherent characteristics of a magnetic material, self‐resonance due to winding stray capacitance, and winding that acts as a distributed constant line. Next, based on the measurement results, the dimensional dependencies of complex permeabilities (dimensional resonance) and the influence of dimensional resonance on inductor impedance are discussed in detail. Finally, this study verifies that the influence of dimensional resonance on complex permeability can be mitigated, and filter inductor impedance can be increased in the high frequency range by core lamination. All experiments are performed using off‐the‐shelf magnetic core products.

中文翻译：

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MnZn铁氧体尺寸依赖性与滤波电感阻抗之间关系的实验评估

本研究探讨了滤波器电感器阻抗与MnZn铁氧体尺寸谐振之间的关系。实验结果表明，多个因素会影响电感器阻抗谐振。这些因素可分为三个因素：磁性材料的固有特性，由于绕组杂散电容引起的自谐振以及作为分布常数线的绕组。接下来，基于测量结果，详细讨论复数导磁率的尺寸依赖性（尺寸谐振）以及尺寸谐振对电感器阻抗的影响。最后，该研究验证了尺寸谐振对复数导磁率的影响可以减轻，并且通过铁芯叠层可以在高频范围内增加滤波器电感器的阻抗。