公开(公告)号：US20240136719A1

公开(公告)日：2024-04-25

申请号：US18493490

申请日：2023-10-23

Applicant: TDK CORPORATION

Inventor： Kenichi TEZUKA ,  Aozora KAWASAKI ,  Shin TAKANE ,  Yousuke FUTAMATA ,  Yasufumi FUKASAWA

IPC: H01Q9/04 ,  H01Q1/38 ,  H01Q1/42

CPC classification number: H01Q9/045 ,  H01Q1/38 ,  H01Q1/422

Abstract: An antenna module is an antenna module including at least a first radiation electrode, and a first power feeding electrode coupled with the first radiation electrode, and includes: a first dielectric layer including the first power feeding electrode; and a second dielectric layer disposed at one side of the first dielectric layer in a thickness direction of the first power feeding electrode, and a fracture toughness value of the second dielectric layer is larger than a fracture toughness value of the first dielectric layer.

公开(公告)号：US20210009463A1

公开(公告)日：2021-01-14

申请号：US16923552

申请日：2020-07-08

Applicant: TDK CORPORATION

Inventor： Shin TAKANE ,  Yousuke FUTAMATA ,  Kenichi SAKAI ,  Yasuharu MIYAUCHI

IPC: C03C10/00 ,  H01L23/15 ,  H05K1/03 ,  B32B17/06 ,  B32B3/26

Abstract: A glass ceramic sintered body having a small dielectric loss in a high frequency band of 10 GHz or higher and a wiring substrate using the same are provided. The glass ceramic sintered body contains crystallized glass, an alumina filler, and silica. The content of the crystallized glass is 45 mass % to 85 mass %, the content of the alumina filler is 14.8 mass % to 50.1 mass % in terms of Al2O3, and the content of silica is 0.2 mass % to 4.9 mass % in terms of SiO2.

公开(公告)号：US20180294084A1

公开(公告)日：2018-10-11

申请号：US15915901

申请日：2018-03-08

Applicant: TDK CORPORATION

Inventor： Masahiro KAMIYA ,  Yasuhide YAMASHITA ,  Chiomi SATO ,  Yousuke FUTAMATA ,  Ryoma NAKAZAWA ,  Takeshi TAKAHASHI ,  Hiroyuki ONO

IPC: H01F1/24 ,  H01F1/33 ,  H01F3/08 ,  B22F1/02 ,  H01F41/02 ,  C22C38/02

Abstract: A dust core includes a metal magnetic material, a resin, and an insulation film. The insulation film contacts with a surface of the metal magnetic material and covers the metal magnetic material. The insulation film includes a first film and a second film. The first film contacts with the surface of the metal magnetic material. The second film contacts with a surface of the first film. A density of the first film is higher than a density of the second film.

公开(公告)号：US20240235033A9

公开(公告)日：2024-07-11

申请号：US18493490

申请日：2023-10-24

Applicant: TDK CORPORATION

Inventor： Kenichi TEZUKA ,  Aozora KAWASAKI ,  Shin TAKANE ,  Yousuke FUTAMATA ,  Yasufumi FUKASAWA

IPC: H01Q9/04 ,  H01Q1/38 ,  H01Q1/42

CPC classification number: H01Q9/045 ,  H01Q1/38 ,  H01Q1/422

Abstract: An antenna module is an antenna module including at least a first radiation electrode, and a first power feeding electrode coupled with the first radiation electrode, and includes: a first dielectric layer including the first power feeding electrode; and a second dielectric layer disposed at one side of the first dielectric layer in a thickness direction of the first power feeding electrode, and a fracture toughness value of the second dielectric layer is larger than a fracture toughness value of the first dielectric layer.

公开(公告)号：US20210009464A1

公开(公告)日：2021-01-14

申请号：US16923531

申请日：2020-07-08

Applicant: TDK CORPORATION

Inventor： Shin TAKANE ,  Yousuke FUTAMATA ,  Yasuharu MIYAUCHI

IPC: C03C10/00 ,  H01B3/08

Abstract: A glass ceramic sintered body having a small dielectric loss in a high frequency band of 10 GHz or higher and stable characteristics against temperature variation and a wiring substrate using the same are provided. The glass ceramic sintered body contains crystallized glass, an alumina filler, silica, and strontium titanate. The content of the crystallized glass is 50 mass % to 80 mass %, the content of the alumina filler is 15.6 mass % to 31.2 mass % in terms of Al2O3, the content of silica is 0.4 mass % to 4.8 mass % in terms of SiO2, and the content of the strontium titanate is 4 mass % to 14 mass % in terms of SrTiO3.

公开(公告)号：US20180261364A1

公开(公告)日：2018-09-13

申请号：US15913964

申请日：2018-03-07

Applicant: TDK CORPORATION

Inventor： Yousuke FUTAMATA ,  Ryoma NAKAZAWA ,  Takeshi TAKAHASHI ,  Junichi SHIMAMURA

IPC: H01F1/147 ,  H01F3/00

Abstract: A dust core includes a metal magnetic material, a resin, an insulation film, and an intermediate layer. The insulation film covers the metal magnetic material. The intermediate layer exists between the insulation film and the metal magnetic material and contacts therebetween. The metal magnetic material includes 85 to 99.5 wt % of Fe, 0.5 to 10 wt % of Si, and 0 to 5 wt % of other elements, with respect to 100 wt % of the entire metal magnetic material. The intermediate layer includes a Fe—Si—O based oxide. The insulation film includes a Si—O based oxide.

公开(公告)号：US20240332822A1

公开(公告)日：2024-10-03

申请号：US18619322

申请日：2024-03-28

Applicant: TDK Corporation

Inventor： Kenichi TEZUKA ,  Yasuharu MIYAUCHI ,  Yousuke FUTAMATA ,  Misaki TABATA

IPC: H01Q21/28 ,  H01Q1/38

CPC classification number: H01Q21/28 ,  H01Q1/38

Abstract: An antenna device includes: a dielectric layer; radiation conductors provided to the dielectric layer; and a plurality of columnar conductors disposed around the radiation conductor in plan view seen from a normal direction of the radiation conductor, and peripheral conductors are disposed on an outer side of the plurality of columnar conductors in plan view seen from the normal direction.

公开(公告)号：US20190252753A1

公开(公告)日：2019-08-15

申请号：US16227558

申请日：2018-12-20

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Shigemitsu TOMAKI ,  Yousuke FUTAMATA ,  Shin TAKANE ,  Yasuharu MIYAUCHI ,  Kazunari KIMURA

IPC: H01P1/20 ,  H01P1/30 ,  H01P7/10 ,  H01P11/00

Abstract: A dielectric filter includes a plurality of dielectric resonators. The dielectric filter also includes: a plurality of resonator body portions each formed of a first dielectric and respectively corresponding to the plurality of dielectric resonators, the first dielectric having a first relative permittivity; a peripheral dielectric portion formed of a second dielectric and lying around the plurality of resonator body portions, the second dielectric having a second relative permittivity lower than the first relative permittivity; and a shield portion formed of a conductor. Either one of a temperature coefficient of resonant frequency of the first dielectric at 25° C. to 85° C. and a temperature coefficient of resonant frequency of the second dielectric at 25° C. to 85° C. has a positive value and the other has a negative value.

公开(公告)号：US20180068771A1

公开(公告)日：2018-03-08

申请号：US15694509

申请日：2017-09-01

Applicant: TDK CORPORATION

Inventor： Ryoma NAKAZAWA ,  Yousuke FUTAMATA ,  Takeshi TAKAHASHI

IPC: H01F1/24 ,  H01F41/02 ,  B29B7/90 ,  B29C43/00

CPC classification number: H01F1/24 ,  B22F1/02 ,  B22F9/026 ,  B22F2998/10 ,  B22F2999/00 ,  B29B7/90 ,  B29C43/003 ,  B29K2105/16 ,  B29K2505/00 ,  B29K2995/0008 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C45/02 ,  C22C2202/02 ,  H01F3/08 ,  H01F41/0246 ,  C22C33/02 ,  B22F9/082 ,  B22F3/1039 ,  B22F1/0011

Abstract: A dust core including a metal magnetic powder and a resin, in which the metal magnetic powder shows a particle diameter of more than 0 μm and 200 μm or less, a number percentage of 5.0% or more of metal magnetic particles among the metal magnetic particles composing the metal magnetic powder are at least partially surface-coated with an inorganic compound including an alkaline earth metal, in a coating part coating the metal magnetic particles, an amount of the alkaline earth metal is 10.0 mass % or more, when a total amount of a metal element included in the coating part is 100 mass %, is provide. The dust core is superior in a corrosion-resistance.