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.

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：US20230130049A1

公开(公告)日：2023-04-27

申请号：US17968214

申请日：2022-10-18

Applicant: TDK CORPORATION

Inventor： Longfei YI ,  Shigemitsu TOMAKI

IPC: H01P1/20 ,  H01P7/08

Abstract: A filter device includes first to third resonators. Each of the first to third resonators includes a first line part and a second line part electrically connected to the first line part and having an impedance smaller than an impedance of the first line part. The impedance ratio in at least one of the first to third resonators is 0.3 or smaller. The shape of each of the second line part of the first resonator and the second line part of the second resonator is long in a direction orthogonal to a stacking direction and crossing the longitudinal direction of the second line part of the third resonator.

公开(公告)号：US20230127771A1

公开(公告)日：2023-04-27

申请号：US17968270

申请日：2022-10-18

Applicant: TDK CORPORATION

Inventor： Longfei YI ,  Shigemitsu TOMAKI

IPC: H01P1/203 ,  H01P7/10

Abstract: A filter device includes a stack including a plurality of dielectric layers stacked together, and first to third resonators integrated with the stack. Each of the first to third resonators includes a first conductor part and a second conductor part electrically connected to the first conductor part and having an impedance smaller than an impedance of the first conductor part. The first conductor part and the second conductor part are arranged at positions different from each other in a stacking direction.

公开(公告)号：US20250087414A1

公开(公告)日：2025-03-13

申请号：US18782186

申请日：2024-07-24

Applicant: TDK Corporation

Inventor： Longfei YI

IPC: H01F27/40 ,  H01F27/28 ,  H01F27/29

Abstract: An electronic component includes an element body and a plurality of inductors disposed in the element body. The plurality of inductors include an inductor unit, an inductor unit, and an inductor unit. Each of the inductor unit, the inductor unit, and the inductor unit has two conductors extending in one direction and a connection conductor connecting respective one ends of the two conductors in the one direction. Respective axial directions of the inductor unit, the inductor unit, and the inductor unit do not overlap each other and are parallel to each other when viewed from the one direction.

公开(公告)号：US20230246621A1

公开(公告)日：2023-08-03

申请号：US18161286

申请日：2023-01-30

Applicant: TDK CORPORATION

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

IPC: H03H7/01 ,  H01F27/28 ,  H01F27/29 ,  H01F27/40 ,  H01G4/30 ,  H01G4/01

CPC classification number: H03H7/0115 ,  H03H7/0161 ,  H01F27/2804 ,  H01F27/29 ,  H01F27/40 ,  H01G4/30 ,  H01G4/01 ,  H01F2027/2809

Abstract: A filter circuit includes a pair of balanced input ports, a pair of balanced output ports, and 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, the first and second resonators being magnetically coupled to each other. Between the first resonator and the second resonator, a capacitor is present but no inductor is present in the circuit configuration.

公开(公告)号：US20240022225A1

公开(公告)日：2024-01-18

申请号：US18303048

申请日：2023-04-19

Applicant: TDK CORPORATION

Inventor： Longfei YI ,  Shigemitsu TOMAKI

IPC: H03H7/01

CPC classification number: H03H7/0115 ,  H03H7/1741 ,  H03H7/1708 ,  H03H2001/0085

Abstract: An electronic component includes: a first conductor extending in one direction; a second conductor extending in the one direction; a first inductor conductor bridged so as to linearly extend between an end portion of the first conductor in its extending direction and an end portion of the second conductor in its extending direction; a connecting conductor that extends in the one direction and has a first end portion and a second end portion in its extending direction, the first end portion being connected to the first inductor conductor and being located between the first conductor and the second conductor; and a capacitor pad electrically connected to the second end portion of the connecting conductor.

公开(公告)号：US20230143899A1

公开(公告)日：2023-05-11

申请号：US17979884

申请日：2022-11-03

Applicant: TDK CORPORATION

Inventor： Longfei YI ,  Shigemitsu TOMAKI

IPC: H01P1/203

CPC classification number: H01P1/20309 ,  H01P1/20372 ,  H01P7/08

Abstract: A filter includes first and second resonators and first and second stub resonators. Each of the first and second resonators includes a first conductor part and a second conductor part electrically connected to the first conductor part and having an impedance smaller than an impedance of the first conductor part. The first stub resonator is electrically connected to the first conductor part of the first resonator. The second stub resonator is electrically connected to the first conductor part of the second resonator. The shape of the first stub resonator and the shape of the second stub resonator are different from each other.