公开(公告)号：US20250070469A1

公开(公告)日：2025-02-27

申请号：US18810721

申请日：2024-08-21

Applicant: TDK Corporation

Inventor： Shoma KAJIKIYA ,  Tomohiro MORIKI

IPC: H01Q7/00 ,  G06K19/07 ,  G06K19/077

Abstract: Disclosed herein is an antenna device that includes a magnetic body having a through hole, and a coil pattern including a first winding part and a second winding part overlapping the through hole of the magnetic body. The through hole of the magnetic body includes first and third inner peripheral edges each including a section extending in a first direction and positioned opposite to each other and second and fourth inner peripheral edges each including a section extending in a second direction perpendicular to the first direction and positioned opposite to each other. The second winding part includes an inner peripheral side part wound along the first to fourth inner peripheral edges and an outer peripheral side part positioned outside the inner peripheral side part and wound along the second to fourth inner peripheral edges without being along the first inner peripheral edge.

公开(公告)号：US20240322420A1

公开(公告)日：2024-09-26

申请号：US18608680

申请日：2024-03-18

Applicant: TDK Corporation

Inventor： Shoma KAJIKIYA ,  Tomohiro MORIKI ,  Yoshitomo SATO ,  Toshio TOMONARI

IPC: H01Q1/22 ,  H01Q7/00

CPC classification number: H01Q1/2283 ,  H01Q7/005

Abstract: Disclosed herein is an antenna device that includes a metal plate having a slit, a first coil, and a second coil disposed inside an opening of the first coil and connected to the first coil. The first end of the slit is opened so as to divide an outer edge of the metal plate. The second end of the slit is terminated at a position away from the outer edge of the metal plate by a first distance so as not to divide the outer edge of the first metal plate. The slit includes a first section overlapping the second coil, a second section positioned between the first section and the first end, and a third section positioned between the first section and the second end. The first distance is smaller than a longer one of the second and third sections.

公开(公告)号：US20240291135A1

公开(公告)日：2024-08-29

申请号：US18587758

申请日：2024-02-26

Applicant: TDK Corporation

Inventor： Shoma KAJIKIYA

IPC: H01Q1/22 ,  H01Q7/00

CPC classification number: H01Q1/2283 ,  H01Q7/00

Abstract: Disclosed herein is an antenna device that includes a magnetic body having a through hole therein, and a coil pattern having upper and bottom surfaces positioned opposite to each other in a thickness direction thereof and a side surface connecting the upper and bottom surfaces. The coil pattern is partially embedded in the magnetic body such that the upper and side surfaces of the coil pattern are at least partially covered with the magnetic body. The coil pattern includes a first winding part and a second winding part protruding from the first winding part toward the through hole formed in the magnetic body in a plan view and wound in a direction opposite to the winding direction of the first winding part. The second winding part is wound along a periphery of the through hole formed in the magnetic body.

公开(公告)号：US20230275351A1

公开(公告)日：2023-08-31

申请号：US18172650

申请日：2023-02-22

Applicant: TDK Corporation

Inventor： Shoma KAJIKIYA ,  Tomohiro MORIKI ,  Toshio TOMONARI

IPC: H01Q7/00 ,  G06K19/07 ,  G06K19/077

CPC classification number: H01Q7/00 ,  G06K19/0723 ,  G06K19/07749

Abstract: Disclosed herein is an antenna module that includes a coil pattern planarly wound in a plurality of turns; a first adhesive layer attached to a first surface of the coil pattern in an axial direction of the coil pattern; a second adhesive layer attached to a second surface of the coil pattern in the axial direction of the coil pattern, the second surface being opposite to the first surface; and a magnetic member attached to the first adhesive layer such that the first adhesive layer is sandwiched between the coil pattern and the magnetic member. The first and second adhesive layers bulge to a gap between adjacent patterns of the coil pattern.

公开(公告)号：US20220285841A1

公开(公告)日：2022-09-08

申请号：US17676405

申请日：2022-02-21

Applicant: TDK CORPORATION

Inventor： Shoma KAJIKIYA ,  Masaki MATSUSHIMA

IPC: H01Q7/00 ,  H01Q5/10

Abstract: Disclosed herein is an antenna device that includes a substrate; and a first coil pattern, a second coil pattern, and a first capacitor which are provided on a surface of the substrate. An opening region of the first coil pattern is smaller in area than an opening region of the second coil pattern. The first coil pattern is disposed so as to overlap the opening region of the second coil pattern. One of the first and second coil patterns is connected to the first capacitor to constitute a closed circuit.