This article describes a new inductance cancelation scheme. The new scheme, named bilateral magnetic coupling (BMC), is applied to a surface mount shunt capacitor filter on a printed circuit board. In the filter structure, input/output paths are placed in parallel with the shunt path from a power supply trace to a ground plane. To reduce parasitic inductance of the shunt path, magnetic couplings between the input/output paths and the shunt path are utilized. The theory of BMC is explained by the method of partial equivalent elements circuit. The filter parameter design of the BMC is investigated using parametric electromagnetic simulation. When BMC performance was evaluated on a test board, it improved by 4.5 dB at 100 MHz under operation of ICs. These results show that the BMC improves the filter performance in the frequency range from a few megahertz to subgigahertz, where noise reduction is important in digital systems.

中文翻译：

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一种用于表面贴装并联电容滤波器的新电感消除方案

本文介绍了一种新的电感消除方案。这种名为双边磁耦合 (BMC) 的新方案应用于印刷电路板上的表面贴装并联电容器滤波器。在滤波器结构中，输入/输出路径与从电源走线到接地层的分流路径平行放置。为了减少分流路径的寄生电感，使用了输入/输出路径和分流路径之间的磁耦合。BMC的理论是用部分等效元件电路的方法来解释的。使用参数电磁仿真研究了 BMC 的滤波器参数设计。在测试板上评估 BMC 性能时，在 IC 运行下，它在 100 MHz 时提高了 4.5 dB。