公开(公告)号：US20210391109A1

公开(公告)日：2021-12-16

申请号：US17342080

申请日：2021-06-08

Applicant: TDK Corporation

Inventor： Kosuke KUNITSUKA ,  Keigo HIGASHIDA ,  Emi ITO ,  Daisuke URABE ,  Yugo ASAI

IPC: H01F17/04 ,  H01F27/29 ,  H01F27/28 ,  H01F27/30

Abstract: Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires have first to third layer winding portions, a first crossing portion positioned between the first and third layer winding portions, and a second crossing portion positioned between the second and third layer winding portions. The vertical positions of the first and second wires are reversed at least partially between the first and third layer winding portions, and the vertical positions of the first and second wires are reversed at least partially between the second and third layer winding portions.

公开(公告)号：US20150340754A1

公开(公告)日：2015-11-26

申请号：US14713246

申请日：2015-05-15

Applicant: TDK CORPORATION

Inventor： Hirohumi ASOU ,  Kosuke KUNITSUKA ,  Toshifumi KOMACHI ,  Toshio TOMONARI

IPC: H01Q1/22 ,  H01Q7/00

CPC classification number: H01Q1/2225 ,  H01F5/003 ,  H01F27/365 ,  H01F38/14 ,  H01Q1/243 ,  H01Q1/38 ,  H01Q1/48 ,  H01Q5/00 ,  H01Q7/00 ,  H01Q7/04 ,  H01Q7/08 ,  Y10T29/49018

Abstract: Disclosed herein is an antenna device that includes an antenna coil having a planar coil pattern, a magnetic sheet that covers one main surface of the antenna coil, and a resin layer provided on the other main surface of the antenna coil and along the coil pattern. The resin layer is substantially the same planar shape as the planar coil pattern.

Abstract translation: 这里公开了一种天线装置，其包括具有平面线圈图案的天线线圈，覆盖天线线圈的一个主表面的磁性薄片和设置在天线线圈的另一个主表面上并沿着线圈图案的树脂层。 树脂层与平面线圈图案基本相同的平面形状。

公开(公告)号：US20210391108A1

公开(公告)日：2021-12-16

申请号：US17342051

申请日：2021-06-08

Applicant: TDK Corporation

Inventor： Kosuke KUNITSUKA ,  Keigo HIGASHIDA ,  Emi ITO

IPC: H01F17/04 ,  H01F27/29 ,  H01F27/28 ,  H01F27/30

Abstract: Disclosed herein is a common mode filter that includes a core having a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires have a first crossing portion at which first turns thereof counted from one ends thereof cross each other and a second crossing portion at which first turns thereof counted from the other ends thereof cross each other. The first and second wires are wound by layer winding in an aligned state with one of the first and second wires positioned in a lower layer and other one thereof positioned in an upper layer in at least parts of the first and second wires between second turns thereof counted from the one ends thereof and second turns thereof counted from the other ends thereof.

公开(公告)号：US20210280355A1

公开(公告)日：2021-09-09

申请号：US17189494

申请日：2021-03-02

Applicant: TDK CORPORATION

Inventor： Kosuke KUNITSUKA ,  Keigo HIGASHIDA ,  Emi ITO

IPC: H01F27/28 ,  H01F27/24 ,  H01F27/29

Abstract: A coil device includes a core having a winding core portion and flange portions and formed in end portions of the winding core portion, a first winding portion formed by winding a first primary wire and a first secondary wire around the winding core portion, and a second winding portion formed by winding a second primary wire and a second secondary wire around the winding core portion. The second winding portion is formed with an alternating winding region where the second primary wire and the second secondary wire are alternately disposed and wound and a continuous winding region where either the second primary wire or the second secondary wire is continuously wound.

公开(公告)号：US20170358391A1

公开(公告)日：2017-12-14

申请号：US15615049

申请日：2017-06-06

Applicant: TDK Corporation

Inventor： Toshio TOMONARI ,  Hirohumi ASOU ,  Kosuke KUNITSUKA

IPC: H01F27/29 ,  H01G11/36 ,  H01G11/48 ,  H01F27/00 ,  H01F30/00

CPC classification number: H01P3/06 ,  H01B1/026 ,  H01B3/18 ,  H01B11/1817 ,  H01F5/00 ,  H01F5/06 ,  H01F27/00 ,  H01F27/2823 ,  H01F27/29 ,  H01F27/292 ,  H01F30/00 ,  H01G11/36 ,  H01G11/48 ,  H01P11/005

Abstract: Disclosed herein is a wire that includes: a core wire made of a conductor; an insulating film covering an outer periphery of the core wire; a catalyst adsorption film covering an outer periphery of the insulating film, the catalyst adsorption film including a catalyst serving as a reaction start point of electroless plating; and an outer periphery conductor covering an outer periphery of the catalyst adsorption film.

公开(公告)号：US20150180128A1

公开(公告)日：2015-06-25

申请号：US14555159

申请日：2014-11-26

Applicant: TDK CORPORATION

Inventor： Tomokazu ISHIKURA ,  Shin TAKANE ,  Norizumi ASANO ,  Kosuke KUNITSUKA

IPC: H01Q7/06 ,  H01F1/01

CPC classification number: H01Q7/06 ,  C04B35/26 ,  C04B35/638 ,  C04B2235/3232 ,  C04B2235/3277 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6562 ,  C04B2235/72 ,  G06K19/07771 ,  H01F1/344 ,  H01Q1/2225

Abstract: An object is to provide a ferrite composition suitable for an antenna element with a long communication distance in a high-frequency band (for example, 13.56 MHz), a ferrite plate formed of the ferrite composition, a magnetic member for an antenna element formed of the ferrite plate, and an antenna element provided with a member for an antenna element. A ferrite composition, wherein: main components contain, with Fe2O3 conversion, 45.0-49.5 mol % of iron oxide, with CuO conversion, 4.0-16.0 mol % of copper oxide, with ZnO conversion, 19.0-25.0 mol % of zinc oxide, a remaining portion is constituted by nickel oxide, an inevitable impurity is removed with respect to the main components, and as accessory components, with TiO2 conversion, 0.5-2 weight % of titanium oxide, with CuO conversion, 0.35-2 weight % of cobalt oxide are contained.

Abstract translation: 本发明的目的是提供一种适用于在高频带（例如，13.56MHz）具有长通信距离的天线元件的铁氧体组合物，由铁氧体组合物形成的铁氧体板，用于天线元件的磁性构件，由 铁氧体板和设置有天线元件的天线元件。 一种铁素体组合物，其中主要成分含有Fe 2 O 3转化率为45.0〜49.5摩尔％的氧化铁，CuO转化率为4.0〜16.0摩尔％，氧化铜为ZnO，ZnO为19.0〜25.0摩尔，氧化锌为19.0〜25摩尔％ 剩余部分由氧化镍构成，相对于主要成分除去不可避免的杂质，作为辅助成分，使用TiO 2转化率为0.5〜2重量％的氧化钛，CuO转化率为0.35〜2重量％的氧化钴 被包含。

公开(公告)号：US20210391110A1

公开(公告)日：2021-12-16

申请号：US17342119

申请日：2021-06-08

Applicant: TDK Corporation

Inventor： Kosuke KUNITSUKA ,  Keigo HIGASHIDA ,  Emi ITO

IPC: H01F17/04 ,  H01F27/29 ,  H01F27/28 ,  H01F27/30

Abstract: Disclosed herein is a common mode filter that includes first and second wires wound in the same direction around the winding core part. The first and second wires include first and second layer winding portions each including a plurality of blocks axially alternately arranged. A first block belonging to the first layer winding portion is disposed closest to the first flange part. A second block belonging to the second layer winding portion is disposed closest to the second flange part. The first and second wires cross each other in a region between axially adjacent blocks.

公开(公告)号：US20180358174A1

公开(公告)日：2018-12-13

申请号：US16004759

申请日：2018-06-11

Applicant: TDK CORPORATION

Inventor： Toshifumi KOMACHI ,  Kosuke KUNITSUKA ,  Toshio TOMONARI

IPC: H01F27/34 ,  H01F27/28 ,  H01F27/29 ,  H01F27/24 ,  H01F27/06

CPC classification number: H01F27/34 ,  H01F27/06 ,  H01F27/24 ,  H01F27/2804 ,  H01F27/29 ,  H01F2027/2809

Abstract: Disclosed herein is a coil component that includes first and second coil parts each spirally wound in a plurality of turns in directions opposite to each other. An innermost turn of the first coil part is radially divided into first and second conductor parts by a spiral slit, and at least an innermost turn of the second coil part is radially divided into third and fourth conductor parts by a spiral slit. The first conductor part is positioned radially inward of the second conductor part, and the third conductor part is positioned radially inward of the fourth conductor part. The inner peripheral end of the first conductor part is connected to the inner peripheral end of the fourth conductor part, and the inner peripheral end of the second conductor part is connected to the inner peripheral end of the third conductor part.