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Improvements in a Ferrite Core Permeability Dispersion Measurement Based on a Microstrip Line Method

机译:基于微带线法的铁氧体磁心磁导率色散测量的改进

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摘要

In this work, errors in a ferrite core permeability dispersion measurement using a microstrip line (MSL) method, where three kinds of MSL circuits are used, are evaluated by both an electromagnetic simulation technique and experiments. The computer simulated results have shown that although the measurement errors decrease according to the diameter of the winding wire which passes through a sample ferrite core becomes larger, that is the spacing between the wire and the core gets narrower, a certain amount of error still remains. In order to overcome this problem and improve the measurement accuracy, a metal pipe electrically connected to a ground plane for shielding is placed around the wire of the non-magnetic core circuit which is one of the three MSL circuits noted above.
机译:在这项工作中,通过电磁仿真技术和实验均评估了使用微带线(MSL)方法(使用三种MSL电路)的铁氧体磁芯磁导率色散测量中的误差。计算机仿真结果表明,尽管测量误差会随着穿过样品铁氧体磁芯的绕组线直径的增大而减小,也就是说,线与芯之间的间距会变窄,但仍然存在一定的误差。为了克服该问题并提高测量精度,将电连接到用于屏蔽的接地平面的金属管放置在作为上述三个MSL电路之一的非磁芯电路的导线周围。

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