公开(公告)号：US12020839B2

公开(公告)日：2024-06-25

申请号：US17342119

申请日：2021-06-08

Applicant: TDK Corporation

Inventor： Kosuke Kunitsuka ,  Keigo Higashida ,  Emi Ito

IPC: H01F17/04 ,  H01F17/00 ,  H01F27/28 ,  H01F27/29 ,  H01F27/30

CPC classification number: H01F17/045 ,  H01F27/2828 ,  H01F27/292 ,  H01F27/306 ,  H01F2017/0093

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：US11189418B2

公开(公告)日：2021-11-30

申请号：US16004759

申请日：2018-06-11

Applicant: TDK CORPORATION

Inventor： Toshifumi Komachi ,  Kosuke Kunitsuka ,  Toshio Tomonari

IPC: H01F27/34 ,  H01F17/00 ,  H01F27/28 ,  H01F27/24 ,  H01F27/06 ,  H01F27/29 ,  H01F17/04

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.

公开(公告)号：US10374301B2

公开(公告)日：2019-08-06

申请号：US15840192

申请日：2017-12-13

Applicant: TDK Corporation

Inventor： Yuhei Horikawa ,  Makoto Orikasa ,  Yoshihiro Kanbayashi ,  Hisayuki Abe ,  Hirohumi Asou ,  Kosuke Kunitsuka

IPC: H01Q7/00 ,  H01Q1/38 ,  H04B5/00 ,  H01Q1/22

Abstract: Disclosed herein is a wiring component that includes a base material and a planar coil pattern formed on the base material. The planar coil pattern includes a coil wiring portion having one end, other end, and first to third connecting positions, the second connecting position being closer to the other end compared with the first connecting position, the third connecting position being closer to the one end compared with the second connecting position; a power-feed wiring portion connected to the first connecting position; and a connection wiring portion that short-circuits the second connecting position and the third connecting position. A cross-section structure of the planar coil pattern has a base resin layer formed on the base material, and a conductive layer formed on the base resin layer.

公开(公告)号：US10186753B2

公开(公告)日：2019-01-22

申请号：US14606378

申请日：2015-01-27

Applicant: TDK CORPORATION

Inventor： Hirohumi Asou ,  Toshifumi Komachi ,  Toshio Tomonari ,  Yoshitomo Sato ,  Kosuke Kunitsuka

IPC: H01Q1/24 ,  H01Q7/00 ,  H01Q1/38 ,  H01Q13/10

Abstract: Disclosed herein is antenna device that includes: a first metal member having a first main surface; a second metal member having a second main surface parallel to the first main surface; and an antenna coil having a coil axis perpendicular to the first and second main surfaces, wherein the first metal member constitutes at least a part of a housing of a portable electronic device in which the antenna coil is mounted, at least one slit is formed between the first and second metal members, an inner diameter section of the antenna coil overlaps with the slit in planar view, and the slit has a constant width at least in a region that overlaps with the antenna coil in planar view.