Multilayer-type chip common mode filter
    9.
    发明授权
    Multilayer-type chip common mode filter 有权
    多层式芯片共模滤波器

    公开(公告)号:US06384705B1

    公开(公告)日:2002-05-07

    申请号:US09476432

    申请日:1999-12-30

    IPC分类号: H01F500

    摘要: A miniaturized common mode EMI filter with a greatly simplified design so that it can be manufactured very economically. The common mode filter includes: (a) a magnetic main body; (b) a pair of substantially identical electrically conductive planar coils embedded in the magnetic main body; and (c) an insulative planar coil sandwiched between the pair of electrically conductive planar coils, wherein the insulative planar coil has a pattern that is substantially identical to and inclusive of the pattern of the electrically conductive planar coils so as to insulate the pair of electrically conductive planar coil from each other. The common mode filter retains low normal mode impedance and high common mode impedance, with a substantially reduced physical size, so that it can cost-effectively maintain a high fidelity of the normal mode waveform of signals for electronic devices that utilize differential transmission technology and keep the common mode EMI noise to a minimum.

    摘要翻译: 一种小型化的共模EMI滤波器,其设计大大简化,可以非常经济地制造。 共模滤波器包括:(a)磁性主体; (b)嵌入在磁性主体中的一对基本相同的导电平面线圈; 和(c)夹在所述一对导电平面线圈之间的绝缘平面线圈,其中所述绝缘平面线圈具有与所述导电平面线圈的图案基本相同并且包括所述导电平面线圈的图案的图案,以使所述一对电气 导电平面线圈彼此。 共模滤波器保持低正常模式阻抗和高共模阻抗,物理尺寸大大降低,从而可以以低成本的方式保持利用差分传输技术的电子设备信号的正常模式波形的高保真度并保持 将共模EMI噪声降至最低。