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：US20240072754A1

公开(公告)日：2024-02-29

申请号：US18456835

申请日：2023-08-28

Applicant: TDK CORPORATION

Inventor： Masahiro TATEMATSU ,  Yuta ASHIDA ,  Shuhei SAWAGUCHI ,  Keigo SHIBUYA ,  Tomonori TERUI ,  Tetsuzo GOTO

IPC: H03H7/01

CPC classification number: H03H7/1775 ,  H03H7/0115 ,  H03H2001/0085

Abstract: In a multilayer filter, first and second resonant circuits are arranged in a direction crossing a stacking direction of a plurality of dielectric layers. An input/output portion includes an input/output port group including an unbalanced port and a pair of balanced ports or an input/output port group including two pairs of balanced ports. The second resonant circuit includes an inductor conductor, a first capacitor conductor, and a second capacitor conductor. The inductor conductor includes first and second ends. The first capacitor conductor is connected to the first end. The second capacitor conductor is connected to the second end. The second dielectric layer has a dielectric constant lower than that of the first dielectric layer. The first and second capacitor conductors are provided in the first dielectric layer. At least a part of the inductor conductor is provided in the second dielectric layer.

公开(公告)号：US20230307810A1

公开(公告)日：2023-09-28

申请号：US18189417

申请日：2023-03-24

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Masahiro TATEMATSU ,  Shuhei SAWAGUCHI ,  Kenichi TEZUKA ,  Aozora KAWASAKI ,  Tetsuzo GOTO ,  Tomoyuki GOI

IPC: H01P1/20

CPC classification number: H01P1/20 ,  H01P7/06

Abstract: A filter includes a first port, a second port, a path, a circuit part, and at least one cavity resonator. The path connects the first port and the second port. The circuit part is provided in the path. Each of the at least one cavity resonator is coupled with the path from an outside of the path in a circuit configuration. The first cavity resonator is coupled with the path between the first port and the circuit part. The second cavity resonator is coupled with the path between the second port and the circuit part.

公开(公告)号：US20240291458A1

公开(公告)日：2024-08-29

申请号：US18585924

申请日：2024-02-23

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Tomonori TERUI ,  Masahiro TATEMATSU ,  Shuhei SAWAGUCHI ,  Keigo SHIBUYA ,  Tetsuzo GOTO

IPC: H03H7/01 ,  H03H7/21

CPC classification number: H03H7/0115 ,  H03H7/21

Abstract: An electronic component includes a filter, a first phase-shift circuit, a second phase-shift circuit, and a stack. The first phase-shift circuit includes a first inductor provided in a first path connecting an unbalanced terminal and a first balanced terminal, and a first capacitor provided between the first path and a ground in a circuit configuration. The second phase-shift circuit includes a second capacitor provided in a second path connecting the unbalanced terminal and a second balanced terminal, and a second inductor provided between the second path and the ground in the circuit configuration. The first inductor and the second inductor are arranged in a direction parallel to a stacking direction.

公开(公告)号：US20240048112A1

公开(公告)日：2024-02-08

申请号：US18361410

申请日：2023-07-28

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Shuhei SAWAGUCHI ,  Masahiro TATEMATSU ,  Keigo SHIBUYA ,  Tomonori TERUI ,  Tetsuzo GOTO

IPC: H03H7/01

CPC classification number: H03H7/0115 ,  H03H7/0161 ,  H03H2001/0085

Abstract: In a multilayer filter, first to fourth resonant circuits are connected to an input/output portion. The input/output portion includes an input/output port group including an unbalanced port and a pair of balanced ports or an input/output port group including two pairs of balanced ports. Each of the first to fourth resonant circuits includes an inductor conductor and first and second capacitor conductors. The inductor conductor includes first and second ends. The first capacitor conductor is connected to the first end. The second capacitor conductor is connected to the second end. The second and third resonant circuits are magnetically coupled to each other. The second and third resonant circuits are arranged between the first resonant circuit and the fourth resonant circuit in a first direction. Each of first and second electrodes of a jump capacitor conductor is connected to the inductor conductors of the first and fourth resonant circuits.

公开(公告)号：US20230282953A1

公开(公告)日：2023-09-07

申请号：US18174965

申请日：2023-02-27

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Masahiro TATEMATSU ,  Shuhei SAWAGUCHI ,  Keigo SHIBUYA ,  Tetsuzo GOTO

IPC: H01P1/207 ,  H01P7/06

CPC classification number: H01P1/207 ,  H01P7/06

Abstract: A filter device includes a ground conductor layer, at least one through hole electrically connected to the ground conductor layer, a first resonator conductor layer and a second resonator conductor layer arranged to sandwich the at least one through hole, and a stack. The first resonator conductor layer extends in a first direction becoming away from the at least one through hole, i.e., the −X direction. The second resonator conductor layer extends in a second direction becoming away from the at least one through hole, i.e., the X direction.

公开(公告)号：US20210234249A1

公开(公告)日：2021-07-29

申请号：US17155789

申请日：2021-01-22

Applicant: TDK CORPORATION

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

IPC: H01P5/18

Abstract: A directional coupler includes first to fourth terminals, a first line, a second line, a ground conductor portion, and a stack. The first line includes a first center portion, a first connecting portion, and a second connecting portion. The second line includes a second center portion, a third connecting portion, and a fourth connecting portion. A distance between the first and third connecting portions and a distance between the second and fourth connecting portions decrease toward the first and second center portions. The first to fourth terminals are located on a bottom surface of the stack.

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：US20220416754A1

公开(公告)日：2022-12-29

申请号：US17902256

申请日：2022-09-02

Applicant: TDK CORPORATION

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

IPC: H03H7/42 ,  H03H7/01 ,  H03H7/09 ,  H03H1/00

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：US20210242852A1

公开(公告)日：2021-08-05

申请号：US17160559

申请日：2021-01-28

Applicant: TDK CORPORATION

Inventor： Yuta ASHIDA ,  Masahiro TATEMATSU ,  Shuhei SAWAGUCHI ,  Shigemitsu TOMAKI ,  Tetsuzo GOTO ,  Takeshi KIJIMA

IPC: H03H7/42 ,  H01G4/30

Abstract: A balun includes first to fourth lines and a stack. A plurality of first conductor layers forming the first and third lines are located in a first region in the stack. A plurality of second conductor layers forming the second and fourth lines are located in a second region in the stack. A ground conductor layer is located closer to the second region than to the first region. The plurality of second conductor layers include a conductor layer pair where a distance between two conductor layers is smallest.