公开(公告)号：US11031170B2

公开(公告)日：2021-06-08

申请号：US16122090

申请日：2018-09-05

Applicant: TDK CORPORATION

Inventor： Shuhei Someya ,  Tasuku Mikogami

IPC: H01F27/29 ,  H01F17/04 ,  H01F27/28 ,  H05K1/18 ,  H05K1/14

Abstract: A coil device includes a coil, a core, and an electrode. The coil is formed by winding a wire. The core is provided with the coil. The electrode has a wire joint part configured to be connected with a wire end of the wire. A mount surface of the electrode is at least partially covered with a cover layer.

公开(公告)号：US12191068B2

公开(公告)日：2025-01-07

申请号：US17079669

申请日：2020-10-26

Applicant: TDK CORPORATION

Inventor： Shuhei Someya ,  Aoi Tokiwa ,  Daisuke Urabe

IPC: H01F27/29 ,  H01F27/06 ,  H01F27/24 ,  H01F27/28 ,  H01F41/069

Abstract: A coil device includes a winding core, a flange, and a terminal fitting. The winding core is wound by a wire. The flange is formed at an end of the winding core in its axial direction. The terminal fitting is attached to the flange. The terminal fitting includes an engagement part engaged with a circumferential wall part of the flange.

公开(公告)号：US11978941B2

公开(公告)日：2024-05-07

申请号：US17399721

申请日：2021-08-11

Applicant: TDK CORPORATION

Inventor： Shuhei Someya ,  Mitsuyuki Nara ,  Katsufumi Ehata ,  Shinichi Tsuchiya ,  Hirofumi Tomita ,  Yoshinobu Shimokura

IPC: H01P1/20 ,  H03H7/01 ,  H04L12/10 ,  H04L12/40

CPC classification number: H01P1/2007 ,  H03H7/0115 ,  H04L12/10 ,  H04L12/40045

Abstract: Disclosed herein is a bias tee circuit connected between a common terminal and power supply and signal terminals, the bias tee circuit includes a capacitor inserted between the common terminal and the signal terminal, and first and second inductors inserted in series between the common terminal and the power supply terminal. The first inductor is connected on a side of the common terminal. The second inductor is connected on a side of the power supply terminal. The second inductor is higher in self-resonance frequency and lower in Q value than the first inductor.

公开(公告)号：US11328860B2

公开(公告)日：2022-05-10

申请号：US16394250

申请日：2019-04-25

Applicant: TDK CORPORATION

Inventor： Shuhei Someya ,  Tasuku Mikogami ,  Yuichi Anzai ,  Hideomi Takahashi

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

Abstract: Disclosed herein is a coil component that includes: a first core having a mounting surface and a coil placing surface positioned opposite to the mounting surface; a lower coil placed on the coil placing surface such that a coil axis of the lower coil extends substantially perpendicular to the coil placing surface; an upper coil substantially coaxially stacked on the lower coil; and a second core disposed through inner diameter areas of the lower and upper coils. The number of turns of one of the lower and upper coils is larger by less than one turn than other one of the lower and upper coils. The diameter of the second core is larger at a first section surrounded by the other one of the lower and upper coils than at a second section surrounded by the one of the lower and upper coils.

公开(公告)号：US11322294B2

公开(公告)日：2022-05-03

申请号：US16394209

申请日：2019-04-25

Applicant: TDK CORPORATION

Inventor： Shuhei Someya ,  Tasuku Mikogami ,  Yuichi Anzai ,  Hideomi Takahashi

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

Abstract: Disclosed herein is a coil component that includes: a first core having a mounting surface and a coil placing surface positioned opposite to the mounting surface; a lower coil placed on the coil placing surface such that a coil axis of the lower coil extends substantially perpendicular to the coil placing surface, the lower coil having one end drawn to a first area of the mounting surface and other end drawn to a second area of the mounting surface; and an upper coil substantially coaxially stacked on the lower coil, the upper coil having one end drawn to a third area of the mounting surface and other end drawn to a fourth area of the mounting surface. The lower coil is greater in a coil diameter than the upper coil.

公开(公告)号：US20190333690A1

公开(公告)日：2019-10-31

申请号：US16394250

申请日：2019-04-25

Applicant: TDK CORPORATION

Inventor： Shuhei Someya ,  Tasuku Mikogami ,  Yuichi Anzai ,  Hideomi Takahashi

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

Abstract: Disclosed herein is a coil component that includes: a first core having a mounting surface and a coil placing surface positioned opposite to the mounting surface; a lower coil placed on the coil placing surface such that a coil axis of the lower coil extends substantially perpendicular to the coil placing surface; an upper coil substantially coaxially stacked on the lower coil; and a second core disposed through inner diameter areas of the lower and upper coils. The number of turns of one of the lower and upper coils is larger by less than one turn than other one of the lower and upper coils. The diameter of the second core is larger at a first section surrounded by the other one of the lower and upper coils than at a second section surrounded by the one of the lower and upper coils.

公开(公告)号：US20190318866A1

公开(公告)日：2019-10-17

申请号：US16379033

申请日：2019-04-09

Applicant: TDK CORPORATION

Inventor： Tasuku Mikogami ,  Shuhei Someya ,  Syun Ashizawa ,  Setu Tsuchida

IPC: H01F27/29 ,  H01F27/28

Abstract: Disclosed herein is a coil component that includes: a core including a winding core part extending in a first direction and a flange part provided at one end of the winding core part in the first direction, the flange part having a first surface substantially parallel with the first direction; a plate-like member fixed to the first surface of flange part; and a wire wound around the winding core part. The first surface of flange part has a cut part greater in size than a diameter of the wire.