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    Signal discriminator
    1.
    发明申请
    Signal discriminator 审中-公开
    信号鉴别器

    公开(公告)号：US20050162234A1

    公开(公告)日：2005-07-28

    申请号：US10511308

    申请日：2003-09-22

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    IPC分类号： C04B35/26 ,  H01F1/34 ,  H01F17/06 ,  H03H1/00 ,  H03B1/00

    CPC分类号： C04B35/2625 ,  C04B35/265 ,  C04B35/2658 ,  C04B35/6262 ,  C04B2235/3232 ,  C04B2235/3262 ,  C04B2235/3267 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/5436 ,  C04B2235/96 ,  H01F1/344 ,  H01F17/06 ,  H01F2017/065

    摘要： A signal discriminator is provided which leverages variation of permittivity of Mn—Zn-based ferrite. The signal discriminator comprises a soft magnetic material which has a capacitive reactance C, and which has its complex relative permittivity varying with frequency such that the real part ε′ of the complex relative permittivity is large in a low frequency domain and small in a high frequency domain. In the reactance component X2, the capacitive reactance C is not negligible with respect to the inductive reactance L in a low frequency domain, in consequence of which the value of the reactance component X2 as a parallel circuit of the capacitive reactance C and the inductive reactance L is caused to decrease, and the influence of the capacitive reactance C is decreased in a high frequency domain. Consequently, the reactance component X2 decreases more than the reactance component X1 of a conventional soft magnetic material, and the X-R cross-point frequency moves to a frequency lower than a conventional X-R cross-point frequency XR1, whereby noises in a frequency band where noise components exist are converted into thermal energy thus reducing the waveform distortion originating from high frequency noises.

    摘要翻译： 提供了一种利用Mn-Zn基铁素体的介电常数变化的信号鉴别器。 信号鉴别器包括具有电容电抗C的软磁材料，其复相对电容率随频率而变化，使得复相对介电常数的实部ε在低频域中较大，而在高频下小 域。 在电抗分量X 2中，电容电抗C相对于低频域中的感抗L是不可忽略的，结果是电容电抗C和电容电抗C的并联电路的电抗分量X 2的值 导致电感L降低，并且电容电抗C的影响在高频域中降低。 因此，电抗分量X 2比常规软磁材料的电抗分量X 1降低，并且XR交叉点频率移动到低于常规XR交叉点频率XR 1的频率，从而频率上的噪声 噪声分量存在的频带被转换成热能，从而减少由高频噪声引起的波形失真。

    Bead type noise filter
    2.
    发明授权
    Bead type noise filter 失效
    珠型噪声滤波器

    公开(公告)号：US07148767B2

    公开(公告)日：2006-12-12

    申请号：US10515494

    申请日：2003-09-22

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    IPC分类号： H03H7/00 ,  H01F27/24 ,  C04B35/26

    CPC分类号： H01F17/06 ,  H01F1/344 ,  H01F3/08 ,  H01F2017/065 ,  H01F2017/067 ,  H03H2001/0092

    摘要： A bead type noise filter according to the present invention is constituted by a magnetic core 1 formed of Mn—Zn ferrite having its resistivity increased so as to improve a high frequency characteristic, and having its permittivity lowered, and thereby can successfully suppress radiation noises without distorting the waveform of transmission signals. The magnetic core 1 constituting the bead type noise filter is formed of a high resistivity soft magnetic material, is shaped cylindrical, and has at least one through-hole 1a so as to form a closed magnetic path, and the bead type noise filter is attached on a signal line 2 such that the signal line 2 is inserted through the through-hole 1a. The soft magnetic material has a real part of complex relative permittivity ranging from 1,000 up to 20,000 at 1 kHz and 50 or lower at 1 MHz, and has a resistivity of 150 Ωm or higher.

    摘要翻译： 根据本发明的珠型噪声滤波器由其电阻率增加的Mn-Zn铁氧体形成的磁芯1构成，以提高高频特性，并且其介电常数降低，从而可以成功地抑制放射线噪声而没有 扭曲传输信号的波形。 构成胎圈型噪声滤波器的磁芯1由高电阻率软磁性材料形成，成形为圆柱形，并且具有至少一个通孔1a以形成闭合磁路，并且胎圈型噪声滤波器为 附着在信号线2上，使得信号线2穿过通孔1a插入。 该软磁性材料具有在1kHz下为1,000至20,000的复相对介电常数的实部，1MHz为50或更低，并且具有150Ωm或更高的电阻率。

    BEAD TYPE NOISE FILTER
    3.
    发明申请
    BEAD TYPE NOISE FILTER 失效
    珠型噪声滤波器

    公开(公告)号：US20060055487A1

    公开(公告)日：2006-03-16

    申请号：US10515494

    申请日：2003-09-22

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    IPC分类号： H03H7/01

    CPC分类号： H01F17/06 ,  H01F1/344 ,  H01F3/08 ,  H01F2017/065 ,  H01F2017/067 ,  H03H2001/0092

    摘要： A bead type noise filter according to the present invention is constituted by a magnetic core 1 formed of Mn—Zn ferrite having its resistivity increased so as to improve a high frequency characteristic, and having its permittivity lowered, and thereby can successfully suppress radiation noises without distorting the waveform of transmission signals. The magnetic core 1 constituting the bead type noise filter is formed of a high resistivity soft magnetic material, is shaped cylindrical, and has at least one through-hole 1a so as to form a closed magnetic path, and the bead type noise filter is attached on a signal line 2 such that the signal line 2 is inserted through the through-hole 1a. The soft magnetic material has a real part of complex relative permittivity ranging from 1,000 up to 20,000 at 1 kHz and 50 or lower at 1 MHz, and has a resistivity of 150 Ωm or higher.

    摘要翻译： 根据本发明的珠型噪声滤波器由其电阻率增加的Mn-Zn铁氧体形成的磁芯1构成，以提高高频特性，并且其介电常数降低，从而可以成功地抑制放射线噪声而没有 扭曲传输信号的波形。 构成胎圈型噪声滤波器的磁芯1由高电阻率软磁性材料形成，成形为圆柱形，并且具有至少一个通孔1a以形成闭合磁路，并且胎圈型噪声滤波器为 附着在信号线2上，使得信号线2穿过通孔1a插入。 该软磁性材料具有在1kHz下为1,000至20,000的复相对介电常数的实部，1MHz为50或更低，并且具有150Ωm或更高的电阻率。

    Inductor
    4.
    发明授权
    Inductor 失效
    电感器

    公开(公告)号：US06798329B2

    公开(公告)日：2004-09-28

    申请号：US10420881

    申请日：2003-04-23

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Yukio Suzuki ,  Kiyoshi Ito ,  Mayuka Shirai

    IPC分类号： H01F2724

    CPC分类号： H01F17/04 ,  H01F1/344

    摘要： In an inductor comprising an open magnetic path formed by a soft magnetic material and a winding provided around the open magnetic path, the soft magnetic material has its relative complex dielectric constant varying according to a frequency. In the soft magnetic material, the imaginary part of the relative complex dielectric constant is greater than the real part thereof in a high-frequency band equal higher than the frequency of the electric signal flowing in the winding. Specifically, the soft magnetic material has a resistivity of 150 &OHgr;m, has a real part of the relative complex dielectric constant, ranging from 1,000 to 20,000 at 1 kHz and 50 or less at 1 MHz, and the imaginary part is greater than the real part at 1 MHz.

    摘要翻译： 在包括由软磁材料形成的开放磁路和围绕开放磁路设置的绕组的电感器中，软磁材料具有根据频率而变化的其相对复合介电常数。 在软磁性材料中，相对复合介电常数的虚部比在绕组中流动的电信号的频率高的高频带大于其实部。 具体地说，软磁材料的电阻率为150欧姆，具有相对复介电常数的实部，1kHz为1,000〜20,000，1MHz为50以下，虚部大于实部 在1MHz。

    Mn-Zn ferrite and production process thereof
    5.
    发明授权
    Mn-Zn ferrite and production process thereof 失效
    锰锌铁氧体及其制备方法

    公开(公告)号：US06440323B1

    公开(公告)日：2002-08-27

    申请号：US09690902

    申请日：2000-10-18

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    IPC分类号： B22F100

    CPC分类号： C04B35/265 ,  C01G49/009 ,  C01P2002/32 ,  C01P2002/52 ,  C04B35/2658 ,  H01F1/344

    摘要： This invention provides a Mn—Zn ferrite which has a high electrical resistance and can sufficiently satisfy the use in a high frequency region exceeding 1 MHz. This invention further provides a production process of the Mn—Zn ferrite in which mixed powder whose components are adjusted so as to have a basic component composition containing 44.0 to 50.0 mol% Fe2O3, 4.0 to 26.5 mol % ZnO, 0.1 to 8.0 mol % one or two from TiO2 and SnO2 and the remainder consisting of MnO, and further to contain 0.01 to 2.00 mass % one or more of CoO, NiO, and MgO as additive is pressed, then sintered and cooled in the air or in an atmosphere containing some amount of oxygen.

    摘要翻译： 本发明提供一种具有高电阻并能够充分满足超过1MHz的高频区域的用途的Mn-Zn铁氧体。 本发明还提供了一种Mn-Zn铁氧体的制造方法，其中调整成分为具有含有44.0〜50.0摩尔％的Fe 2 O 3，4.0〜26.5摩尔％的ZnO，0.1〜8.0摩尔％的ZnO的碱性成分组成的混合粉末 或者两个来自TiO 2和SnO 2，剩余部分由MnO组成，并且还含有0.01至2.00质量％的一种或多种CoO，NiO和MgO作为添加剂，然后在空气中或在含有一部分的气氛中烧结和冷却 氧气量。

    Production process of Mn-Zn ferrite
    6.
    发明授权
    Production process of Mn-Zn ferrite 失效
    锰锌铁氧体的生产工艺

    公开(公告)号：US06576169B2

    公开(公告)日：2003-06-10

    申请号：US09989496

    申请日：2001-11-21

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    IPC分类号： B29B1700

    CPC分类号： C01G49/009 ,  C01G49/0072 ,  C01P2004/61 ,  C04B35/2658

    摘要： A production process of a Mn—Zn ferrite enables wastes of sintered cores to be recycled without serious difficulties in sintering. The production process includes recycling a powder obtained by milling a sintered Mn—Zn ferrite, thereby obtaining a sintered core having a component composition including 44.0 to 49.8 mol % Fe2O3, 4.0 to 26.5 mol % ZnO, 0.02 to 1.00 mol % Mn2O3 and a remainder MnO.

    摘要翻译： Mn-Zn铁氧体的制造方法能够使烧结芯的废料再循环，而不会造成烧结的严重困难。 制造方法包括将通过研磨Mn-Zn系铁氧体烧结得到的粉末进行再循环，得到具有44.0〜49.8摩尔％Fe 2 O 3，4.0〜26.5摩尔％ZnO，0.02〜1.00摩尔％Mn 2 O 3的组分组成的烧结芯，其余部分 MnO。

    Mn-Zn ferrite and production process thereof
    10.
    发明授权
    Mn-Zn ferrite and production process thereof 失效
    锰锌铁氧体及其制备方法

    公开(公告)号：US06436308B2

    公开(公告)日：2002-08-20

    申请号：US09769296

    申请日：2001-01-26

    申请人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    发明人： Osamu Kobayashi ,  Osamu Yamada ,  Kiyoshi Ito

    IPC分类号： B22F100

    CPC分类号： H01F1/344 ,  C04B35/265 ,  C04B35/2658

    摘要： The present invention provides a Mn—Zn ferrite having an electrical resistivity exceeding 1 &OHgr;m order and having a high initial permeability of 4000 or more at 100 kHz and 100 or more at 10 MHz. The main components of the Mn—Zn ferrite include 44.0 to 49.8 mol % Fe2O3, 15.0 to 26.5 mol % ZnO, 0.1 to 3.0 mol % CoO, 0.02 to 1.00 mol % Mn2O3, and the remainder MnO. The Mn—Zn ferrite can be used in a wide frequency region of 100 kHz to 10 MHz by limiting Fe2O3 content to a range of less than 50 mol %, that is the stoichiometric composition, inhibiting formation of Mn2O3 and adding a proper amount of CoO.

    摘要翻译： 本发明提供一种Mn-Zn铁氧体，其电阻率超过1欧姆等级，并且在100kHz时具有4000或更高的初始磁导率，在10MHz时具有100或更高的初始磁导率。 Mn-Zn铁氧体的主要成分包括44.0〜49.8mol％的Fe2O3，15.0〜26.5mol％的ZnO，0.1〜3.0mol％的CoO，0.02〜1.00mol％的Mn2O3，余下的是MnO。 通过将Fe 2 O 3含量限制在小于50mol％，即化学计量组成的范围内，Mn-Zn铁氧体可以在100kHz至10MHz的宽频率区域中使用，抑制Mn 2 O 3的形成并添加适量的CoO 。