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    ANTENNA DEVICE AND IC CARD HAVING THE SAME
    1.
    发明申请
    ANTENNA DEVICE AND IC CARD HAVING THE SAME 有权

    公开(公告)号：US20250094761A1

    公开(公告)日：2025-03-20

    申请号：US18891079

    申请日：2024-09-20

    Applicant: TDK Corporation

    Inventor： Shoma KAJIKIYA ,  Toshio TOMONARI ,  Chris T. BURKET

    IPC: G06K19/077

    Abstract: Disclosed herein is an antenna device that includes: a metal plate having a first slit extending in a long side direction thereof and a second slit extending in a short side direction thereof; a first coil disposed so as to overlap with the metal plate in a plan view and circling along an outer edge of the metal plate; and a second coil electrically connected to the first coil, disposed so as to be surrounded by the first coil, and disposed so as to overlap with the first slit. The first slit has a first end that is open to divide the outer edge and a second end terminating without reaching the outer edge. The second slit has a third end that is open to divide the outer edge and a fourth end terminating without reaching the outer edge.

    COMMON MODE FILTER
    2.
    发明申请
    COMMON MODE FILTER 有权

    公开(公告)号：US20230136361A1

    公开(公告)日：2023-05-04

    申请号：US18088674

    申请日：2022-12-26

    Applicant: TDK Corporation

    Inventor： Yugo ASAI ,  Tsutomu KOBAYASHI ,  Daisuke URABE ,  Hiroshi SUZUKI ,  Emi ITO ,  Toshio TOMONARI

    IPC: H03H7/42 ,  H01F17/04 ,  H01F27/00 ,  H01F27/06 ,  H03H1/00 ,  H03H7/09 ,  H01F27/28

    Abstract: Disclosed herein is a common mode filter that includes a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block on one endmost side in an axial direction of the winding core part, a second winding block on other endmost side in the axial direction of the winding core part, and a third winding block positioned between the first and second winding blocks. The second winding block is a winding block at an odd-numbered position counted from the first winding block. The first and second wires cross each other in an area between the first and third winding blocks and in an area between the second and third winding blocks.

    COIL DEVICE
    4.
    发明申请
    COIL DEVICE 审中-公开

    公开(公告)号：US20180286553A1

    公开(公告)日：2018-10-04

    申请号：US15903696

    申请日：2018-02-23

    Applicant: TDK CORPORATION

    Inventor： Tsutomu KOBAYASHI ,  Toshio TOMONARI ,  Kiyofumi FUJIWARA ,  Emi ITO

    IPC: H01F17/04 ,  H01F27/24 ,  H01F27/28 ,  H01F27/00 ,  H01F27/29

    Abstract: A coil device includes a core, an inner coil portion, an outer coil portion, and an intermediate resin layer. The core includes a winding portion and a flange positioned at an end of the winding portion in an axial direction. The inner coil portion is constituted by winding a first wire around the winding portion. The outer coil portion is constituted by winding a second wire outside the inner coil portion. The intermediate resin layer exists between the inner coil portion and the outer coil portion.

    COMMON MODE FILTER
    8.
    发明申请
    COMMON MODE FILTER 有权
    共模滤波器

    公开(公告)号：US20140167903A1

    公开(公告)日：2014-06-19

    申请号：US14132550

    申请日：2013-12-18

    Applicant: TDK CORPORATION

    Inventor： Toshio TOMONARI ,  Tsutomu KOBAYASHI ,  Kazunori ARIMITSU ,  Yuma KOMAYA

    IPC: H01F27/28

    CPC classification number: H01F27/2823 ,  H01F17/045 ,  H01F27/29 ,  H01F2017/0093

    Abstract: A common mode filter includes first and second wires wound around a winding core portion by the same number of turns. Each of the first and second wires is wound by a number m1 of turns in a first winding area and wound by a number m2 of turns in a second winding area. A distance D1 between an n1th turn (1≦n1≦m1−1) of the second wire and an n1+1th turn of the first wire is shorter than a distance D2 between an n1th turn of the first wire and an n1+1th turn of the second wire in the winding area. A distance D3 between an n2th (m1+1≦n2≦m1+m2−1) turn of the first wire and an n2+1th turn of the second wire is shorter than a distance D4 between an n2th turn of the second wire and an n2+1th turn of the first wire in the winding area.

    Abstract translation: 共模滤波器包括缠绕在绕组芯部分上相同匝数的第一和第二线。 第一线和第二线中的每一条在第一绕组区域中缠绕数m1匝，并在第二绕组区域中缠绕数m2匝。 第二线的第n1匝（1＆nlE; n1＆nlE; m1-1）与第一线的第n1 + 1匝之间的距离D1短于第一线的第n匝和第n1 + 1匝之间的距离D2 的绕组区域中的第二根线。 第一线的第n2（m1 + 1＆nlE; n2＆nlE; m1 + m2-1）之间的距离D3和第二线的n2 + 1圈的距离D3短于第二线的第n2圈与 n2 +第1圈绕线区域的第一根线。

    COMMON MODE FILTER
    9.
    发明申请
    COMMON MODE FILTER 有权

    公开(公告)号：US20230095851A1

    公开(公告)日：2023-03-30

    申请号：US18072845

    申请日：2022-12-01

    Applicant: TDK Corporation

    Inventor： Toshio TOMONARI ,  Tsutomu KOBAYASHI ,  Kazunori ARIMITSU

    IPC: H01F27/28 ,  H01F17/04 ,  H01F1/047 ,  H01F27/24

    Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.

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