公开(公告)号：US20190326654A1

公开(公告)日：2019-10-24

申请号：US16351609

申请日：2019-03-13

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Noriyuki HIRABAYASHI ,  Shigemitsu TOMAKI

IPC: H01P1/20 ,  H01P1/18 ,  H01P7/10

Abstract: A dielectric filter includes a plurality of dielectric resonators. The dielectric filter further includes a plurality of resonator bodies corresponding to the plurality of dielectric resonators, and a peripheral dielectric portion lying around the plurality of resonator bodies. Each of the plurality of resonator bodies is formed of a first dielectric having a first relative permittivity. The peripheral dielectric portion is formed of a second dielectric having a second relative permittivity lower than the first relative permittivity. Each of the plurality of resonator bodies includes a plurality of individual elements separated from each other.

公开(公告)号：US20190199313A1

公开(公告)日：2019-06-27

申请号：US16179418

申请日：2018-11-02

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Noriyuki HIRABAYASHI ,  Shigemitsu TOMAKI

IPC: H03H7/01 ,  H01L23/66 ,  H01L23/64

Abstract: A band-pass filter includes five resonators. The five resonators are configured so that capacitive coupling is established between every two of the resonators adjacent to each other in circuit configuration. The first stage resonator and the fifth stage resonator are magnetically coupled to each other. The second stage resonator and the fourth stage resonator are capacitively coupled to each other. Each of the five resonators includes a resonator conductor portion. The respective resonator conductor portions of the first and fifth stage resonators are physically adjacent to each other. The respective resonator conductor portions of the second and fourth stage resonators are physically adjacent to each other. The respective resonator conductor portions of the first and second stage resonators are physically adjacent to each other. The respective resonator conductor portions of the fourth and fifth stage resonators are physically adjacent to each other.

公开(公告)号：US20220209380A1

公开(公告)日：2022-06-30

申请号：US17556559

申请日：2021-12-20

Applicant: TDK CORPORATION

Inventor： Honoka ATSUCHI ,  Yuta ASHIDA ,  Longfei YI ,  Yoshinori MATSUMARU ,  Shuhei SAWAGUCHI ,  Masahiro TATEMATSU ,  Shigemitsu TOMAKI

IPC: H01P1/20

Abstract: A band-pass filter includes a first input/output port, a second input/output port, a plurality of resonators, and a multilayer stack. The multilayer stack includes a plurality of stacked dielectric layers. Each of the resonators is an open-ended resonator formed of a conductor line in the multilayer stack. Each of the resonators includes a resonator conductor portion including a first line part and a second line part located away from each other in a direction orthogonal to a stacking direction of the plurality of dielectric layers, and a third line part connecting the first line part and the second line part. The first to third line parts extend to surround a space between the first line part and the second line part.

公开(公告)号：US20210344320A1

公开(公告)日：2021-11-04

申请号：US17242053

申请日：2021-04-27

Applicant: TDK CORPORATION

Inventor： Shuhei SAWAGUCHI ,  Yuta ASHIDA ,  Masahiro TATEMATSU ,  Yoshinori MATSUMARU ,  Shigemitsu TOMAKI

IPC: H03H7/01

Abstract: A band-pass filter includes an unbalanced port, a first balanced port, a second balanced port, and first to third resonators provided between the unbalanced port and the first and second balanced ports. The second resonator and the third resonator each are a resonator with both ends open. The second resonator and the third resonator are adjacent to each other in a circuit configuration, and electromagnetically coupled by magnetic coupling as main coupling. The first resonator is provided closer to the second resonator than to the third resonator, and jump-coupled to the third resonator.

公开(公告)号：US20210328317A1

公开(公告)日：2021-10-21

申请号：US17362140

申请日：2021-06-29

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Noriyuki HIRABAYASHI ,  Shigemitsu TOMAKI

IPC: H01P1/203 ,  H01P1/205 ,  H03H7/01

Abstract: A multilayered filter device includes a multilayer stack, a band pass filter, a first band elimination filter, and a second band elimination filter. The band pass filter and the first and second band elimination filters are each constructed using the multilayer stack. The band pass filter includes a plurality of first resonators with open ends. Each band elimination filter includes a connection path, and a second resonator coupled to the connection path. The connection path includes an impedance transformer. The second resonator includes a conductor line constituting a distributed constant line.

公开(公告)号：US20180226934A1

公开(公告)日：2018-08-09

申请号：US15877534

申请日：2018-01-23

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Naoki SOTOMA ,  Shigemitsu TOMAKI ,  Yasuyuki HIWATASHI

IPC: H03H1/00 ,  H03H7/01

CPC classification number: H03H1/00 ,  H01P1/2088 ,  H03H7/01 ,  H03H2001/0021 ,  H04W84/042

Abstract: A band-pass filter includes a main body formed of a dielectric, a plurality of resonators, a shield, and a partition formed of a conductor. Each of the plurality of resonators includes a resonator conductor portion. The resonator conductor portion has a first end and a second end opposite to each other in the longitudinal direction. The first end is connected to a ground, and the second end is open. The partition extends to pass through between the respective resonator conductor portions of two resonators, and is electrically connected to the shield.

公开(公告)号：US20170365902A1

公开(公告)日：2017-12-21

申请号：US15620053

申请日：2017-06-12

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Kazunari KIMURA ,  Shigemitsu TOMAKI

IPC: H01P1/20 ,  H01P7/10

CPC classification number: H01P1/2002 ,  H01P1/20309 ,  H01P1/2084 ,  H01P7/10

Abstract: A dielectric filter includes: a resonator body formed of dielectric material; surrounding dielectric portion present around the resonator body and formed of dielectric material having a relative permittivity lower than the dielectric material used to form the resonator body; and an input/output conductor portion formed of a conductor and configured to perform at least one supply of an electromagnetic wave to the resonator body and reception of an electromagnetic wave from the resonator body. The resonator body has a first end face and a second end face located at opposite ends in a first direction. The input/output conductor portion is located either at least part of the input/output conductor portion is contained in a space formed by shifting a virtual plane corresponding to the first end face in the first direction away from the second end face, or the input/output conductor portion is in contact with the space.

公开(公告)号：US20150035626A1

公开(公告)日：2015-02-05

申请号：US14340880

申请日：2014-07-25

Applicant: TDK CORPORATION

Inventor： Shigemitsu TOMAKI ,  Tomoaki KAWATA ,  Kiyoshi HATANAKA ,  Toshio SAKURAI ,  Yasunori SAKISAKA

IPC: H01P7/10

CPC classification number: H01P1/2002 ,  H01P3/16 ,  H01P7/10

Abstract: A dielectric line includes a line portion and a surrounding dielectric portion. The line portion is formed of a first dielectric having a first relative permittivity. The surrounding dielectric portion is formed of a second dielectric having a second relative permittivity. The line portion propagates one or more electromagnetic waves of one or more frequencies within the range of 1 to 10 GHz. In a cross section orthogonal to the direction of propagation of the one or more electromagnetic waves through the line portion, the surrounding dielectric portion is present around the line portion. The first relative permittivity is 1,000 or higher. The second relative permittivity is lower than the first relative permittivity.

Abstract translation: 介质线包括线部分和周围的电介质部分。 线部分由具有第一相对介电常数的第一电介质形成。 周围介电部分由具有第二相对介电常数的第二电介质形成。 线路部分传播1到10GHz范围内的一个或多个频率的一个或多个电磁波。 在与通过线路部分的一个或多个电磁波的传播方向垂直的横截面中，围绕电介质部分存在于线部分周围。 第一相对介电常数为1000以上。 第二相对介电常数低于第一相对介电常数。

公开(公告)号：US20250022649A1

公开(公告)日：2025-01-16

申请号：US18768491

申请日：2024-07-10

Applicant: TDK Corporation

Inventor： Noriyuki SAITO ,  Tomoaki KAWADA ,  Shigemitsu TOMAKI ,  Misaki TABATA ,  Riku TAKEDA ,  Hiroshi SATOU ,  Gaku ECHIGOYA

IPC: H01F27/28

Abstract: A coil component includes an element body, and a first coil conductor and a second coil conductor disposed in the element body, in which the conductor has, in a cross section orthogonal to an extending direction of the first coil conductor and the second coil conductor, a first end portion and a second end portion in a width direction viewed from the extending direction, the first end portion forms a first angle, the second end portion forms a second angle, and the first angle and the second angle are different.

公开(公告)号：US20230253945A1

公开(公告)日：2023-08-10

申请号：US18162155

申请日：2023-01-31

Applicant: TDK CORPORATION

Inventor： Masahiro TATEMATSU ,  Shuhei SAWAGUCHI ,  Yuta ASHIDA ,  Tetsuzo GOTO ,  Yoshinori MATSUMARU ,  Shigemitsu TOMAKI ,  Longfei YI

IPC: H03H7/01 ,  H01F27/28 ,  H01F27/29 ,  H01G4/30 ,  H01G4/012

CPC classification number: H03H7/0115 ,  H03H7/0161 ,  H01F27/2804 ,  H01F27/292 ,  H01G4/30 ,  H01G4/012 ,  H01F2027/2809

Abstract: A filter circuit includes a pair of balanced input ports, a pair of balanced output ports, first and second resonators provided in parallel between the pair of balanced input ports and the pair of balanced output ports in a circuit configuration, a first capacitor connected in parallel to the first resonator, and a second capacitor connected in parallel to the second resonator. The first and second resonators are magnetically coupled to each other and electrically connected to each other. The first and second capacitors are not electrically connected to ground.