公开(公告)号：US10193527B2

公开(公告)日：2019-01-29

申请号：US15355445

申请日：2016-11-18

Applicant: TDK CORPORATION

Inventor： Kazuhiro Tsukamoto ,  Hiroya Suzuki

IPC: H03H9/54 ,  H03H9/64 ,  H03H9/70 ,  H03H9/72 ,  H03H7/075 ,  H03H7/01

Abstract: A branching filter includes a low-pass filter provided between a common port and a first signal port, and a high-pass filter provided between the common port and a second signal port. The low-pass filter includes: a first LC resonant circuit; and a first acoustic wave resonator provided in a shunt circuit connecting a path leading from the first LC resonant circuit to the first signal port to a ground. The high-pass filter includes: a second LC resonant circuit; and a second acoustic wave resonator provided in a path leading from the second LC resonant circuit to the second signal port.

公开(公告)号：US12261588B2

公开(公告)日：2025-03-25

申请号：US17961639

申请日：2022-10-07

Applicant: TDK CORPORATION

Inventor： Kazuhiro Tsukamoto

IPC: H03H9/64 ,  H03H7/01 ,  H03H9/05 ,  H03H9/54 ,  H03H9/70

Abstract: An electronic component includes a first main body including a plurality of dielectric layers stacked together, and a second main body mounted to the first main body. The second main body includes a first circuit section and a second circuit section that are each constituted by using at least one acoustic wave element and are electrically separated from each other. The first main body includes first to third ground conductor lavers located between the first and second circuit sections when seen in a Z direction.

公开(公告)号：US12063024B2

公开(公告)日：2024-08-13

申请号：US17896464

申请日：2022-08-26

Applicant: TDK CORPORATION

Inventor： Kazuhiro Tsukamoto

IPC: H03H7/01

CPC classification number: H03H7/0115 ,  H03H7/0138 ,  H03H7/0161 ,  H03H7/1766

Abstract: An LC circuit includes a first capacitor provided between a first connection point and a second connection point, a second capacitor provided between the second connection point and a third connection point, a third capacitor provided between the third connection point and a fourth connection point, a fourth capacitor provided between the first connection point and the third connection point, a fifth capacitor provided between the second connection point and the fourth connection point, a first inductor connected to the second connection point, and a second inductor connected to the third connection point.

公开(公告)号：US11711063B2

公开(公告)日：2023-07-25

申请号：US17685442

申请日：2022-03-03

Applicant: TDK CORPORATION

Inventor： Takuya Sato ,  Kazuhiro Tsukamoto

IPC: H03H7/01 ,  H03H1/00

CPC classification number: H03H7/0115 ,  H03H2001/0085

Abstract: A filter device includes a filter including at least one inductor and at least one capacitor, and a stack of a plurality of dielectric layers and a plurality of conductor layers. The plurality of dielectric layers include at least one first dielectric layer formed of a first dielectric material and at least one second dielectric layer formed of a second dielectric material. The plurality of conductor layers include at least one first conductor layer in contact with the at least one first dielectric layer, and at least one second conductor layer in contact with the at least one second dielectric layer. The temperature coefficient of resonant frequency of the first dielectric material has a positive value. The temperature coefficient of resonant frequency of the second dielectric material has a negative value.

公开(公告)号：US11356073B2

公开(公告)日：2022-06-07

申请号：US17176607

申请日：2021-02-16

Applicant: TDK CORPORATION

Inventor： Takuya Sato ,  Kazuhiro Tsukamoto

IPC: H03H7/01 ,  H03H7/09 ,  H03H1/00

Abstract: In a multilayer filter, a first LC parallel resonance unit, a second LC parallel resonance unit, and an LC circuit unit are configured in an element body, in which the LC circuit unit is connected between the first LC parallel resonance unit and the second LC parallel resonance unit in a path between a first terminal electrode and a second terminal electrode, a conductor pattern constituting an inductor of the LC circuit unit is not disposed between a conductor pattern constituting a first inductor of the first LC parallel resonance unit and a conductor pattern constituting a second inductor of the second LC parallel resonance unit in the element body, and the first inductor of the first LC parallel resonance unit and the second inductor of the second LC parallel resonance unit are magnetically coupled.

公开(公告)号：US09871500B2

公开(公告)日：2018-01-16

申请号：US15082513

申请日：2016-03-28

Applicant: TDK CORPORATION

Inventor： Masanori Tsutsumi ,  Kazuhiro Tsukamoto ,  Manabu Kitami ,  Toshiyuki Takami ,  Shohei Kusumoto ,  Noriyuki Hirabayashi

IPC: H03H7/42 ,  H01P5/10

CPC classification number: H03H7/42

Abstract: A multilayer electronic component includes a stack and a balun. The stack includes a plurality of stacked dielectric layers and conductor layers. The balun is formed using the stack. The balun includes an unbalanced transmission line and first to fourth balanced transmission lines. The unbalanced transmission line includes a first line portion and a second line portion connected in series. The first and second balanced transmission lines are configured to be electromagnetically coupled to the first line portion. The third and fourth balanced transmission lines are configured to be electromagnetically coupled to the second line portion.

公开(公告)号：US10554195B2

公开(公告)日：2020-02-04

申请号：US16291569

申请日：2019-03-04

Applicant: TDK CORPORATION

Inventor： Kazuhiro Tsukamoto ,  Hiroya Suzuki

IPC: H03H9/54 ,  H03H9/64 ,  H03H9/70 ,  H03H9/72 ,  H03H7/01

Abstract: A branching filter includes a first band-pass filter provided between a common port and a first signal port, and a second band-pass filter provided between the common port and a second signal port. The first band-pass filter includes a first LC resonant circuit and a first resonant circuit section. The first resonant circuit section includes a first acoustic wave resonator. The second band-pass filter includes a second LC resonant circuit and a second resonant circuit section. The second resonant circuit section includes a second acoustic wave resonator and an inductor connected in parallel.

公开(公告)号：US11705881B2

公开(公告)日：2023-07-18

申请号：US17686186

申请日：2022-03-03

Applicant: TDK CORPORATION

Inventor： Takuya Sato ,  Kazuhiro Tsukamoto ,  Masanori Tsutsumi

IPC: H03H7/01 ,  H03H7/46

CPC classification number: H03H7/0161 ,  H03H7/0115 ,  H03H7/46

Abstract: A branching filter includes a common port, a first signal port, a second signal port, a first filter, which is provided between the common port and the first signal port, that selectively passes a signal of a frequency within a first passband, a second filter, which is provided between the common port and the second signal port, that selectively passes a signal of a frequency within a second passband different from the first passband, and a capacitor that has a first end and a second end and connects the first filter and the second filter.

公开(公告)号：US10263600B2

公开(公告)日：2019-04-16

申请号：US15355443

申请日：2016-11-18

Applicant: TDK CORPORATION

Inventor： Kazuhiro Tsukamoto ,  Hiroya Suzuki

IPC: H03H9/54 ,  H03H7/01 ,  H03H9/70 ,  H03H9/72 ,  H03H9/64

Abstract: A branching filter includes a first band-pass filter provided between a common port and a first signal port, and a second band-pass filter provided between the common port and a second signal port. The first band-pass filter includes a first LC resonant circuit and a first resonant circuit section provided in series. The first resonant circuit section includes a first acoustic wave resonator. The second band-pass filter includes a second LC resonant circuit and a second resonant circuit section provided in series. The second resonant circuit section includes a second acoustic wave resonator and an inductor connected in parallel.

公开(公告)号：US09413328B2

公开(公告)日：2016-08-09

申请号：US14325775

申请日：2014-07-08

Applicant: TDK CORPORATION

Inventor： Kazuhiro Tsukamoto ,  Masanori Tsutsumi

IPC: H01P5/12 ,  H03H7/46 ,  H03H7/01

CPC classification number: H03H7/461 ,  H03H7/175 ,  H03H7/1766 ,  H03H7/1775

Abstract: A diplexer includes a first bandpass filter provided between an input terminal and a first output terminal and selectively passing a signal in a first frequency band, and a second bandpass filter provided between the input terminal and a second output terminal and selectively passing a signal in a second frequency band. The first bandpass filter includes a plurality of first resonators. The second bandpass filter includes a second resonator and a series resonant circuit. The series resonant circuit is composed of a capacitor provided between the input terminal and the second resonator, and an inductance component of a line that connects the input terminal and the second resonator via the capacitor.

Abstract translation: 双工器包括：设置在输入端和第一输出端之间并选择性地通过第一频带中的信号的第一带通滤波器和设置在输入端和第二输出端之间的第二带通滤波器， 第二频带。 第一带通滤波器包括多个第一谐振器。 第二带通滤波器包括第二谐振器和串联谐振电路。 串联谐振电路由设置在输入端子和第二谐振器之间的电容器和通过电容器连接输入端子和第二谐振器的线路的电感分量组成。