公开(公告)号：US20210126609A1

公开(公告)日：2021-04-29

申请号：US17144190

申请日：2021-01-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI

IPC: H03H7/01 ,  H03H7/09 ,  H01F27/28

Abstract: A band pass filter includes a first filter circuit, a second filter circuit, a first intermediate circuit, a second intermediate circuit, and a ninth capacitor. The first intermediate circuit includes a seventh inductor connected between a fifth capacitor and a sixth capacitor. The second intermediate circuit includes an eighth inductor connected between a seventh capacitor and an eighth capacitor. The ninth capacitor is connected between the first intermediate circuit and the second intermediate circuit.

公开(公告)号：US20210044269A1

公开(公告)日：2021-02-11

申请号：US16931487

申请日：2020-07-17

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI

IPC: H03H7/01

Abstract: A band pass filter is provided with a first filter circuit which includes a first resonant circuit including a first inductor and a second resonant circuit including a second inductor, a second filter circuit which includes a third resonant circuit including a third inductor and a fourth resonant circuit including a fourth inductor, and a fifth resonant circuit including a fifth inductor. The fifth inductor is electromagnetically coupled to each of the first inductor, the second inductor, the third inductor, and the fourth inductor.

公开(公告)号：US20180234073A1

公开(公告)日：2018-08-16

申请号：US15951207

申请日：2018-04-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI

IPC: H03H7/42 ,  H03H7/01

CPC classification number: H03H7/422 ,  H01F17/00 ,  H01F27/00 ,  H03H7/0115 ,  H03H7/0123 ,  H03H7/09 ,  H03H7/38 ,  H03H7/461 ,  H03H7/482 ,  H03H2001/0085 ,  H04B1/581

Abstract: A small-sized balance filter includes an unbalanced terminal and two pairs of balanced terminals and has a low signal insertion loss. An unbalanced terminal, a first balanced terminal including first and second terminals, and a second balanced terminal Rx including first and second terminals are provided. An unbalanced-side inductor is provided between the unbalanced terminal and the ground, first balanced-side inductors are provided between the first and second terminals of the first balanced terminal, second balanced-side inductors are provided between the first and second terminals of the second balanced terminal, and the unbalanced-side inductor is electromagnetic-field-coupled to each of the first and second balanced-side inductors.

公开(公告)号：US20150162888A1

公开(公告)日：2015-06-11

申请号：US14548457

申请日：2014-11-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yasushi YUNOKI ,  Tetsuo TANIGUCHI ,  Keisuke KATABUCHI

IPC: H03H7/01

CPC classification number: H03H7/0161 ,  H03H7/0115 ,  H03H7/0123 ,  H03H7/09 ,  H03H7/1758 ,  H03H2001/0085

Abstract: A variable-frequency resonance circuit includes first and second input/output terminals and a resonance circuit portion. The resonance circuit portion includes a first inductor and first and second LC series circuits. The resonance circuit portion is connected between a ground and a transmission line that connects the first and second input/output terminals. The first LC series circuit includes a second inductor and a variable capacitor connected in series with each other. The second LC series circuit includes a third inductor and a fixed capacitor connected in series with each other. The first and second LC series circuits are connected in parallel between the first inductor and a ground. The first and second inductors are configured such that positive-coupling mutual inductance is produced therebetween.

Abstract translation: 可变频率谐振电路包括第一和第二输入/输出端子和谐振电路部分。 谐振电路部分包括第一电感器和第一和第二LC串联电路。 谐振电路部分连接在接地和连接第一和第二输入/输出端子的传输线之间。 第一LC串联电路包括彼此串联连接的第二电感器和可变电容器。 第二LC串联电路包括彼此串联连接的第三电感器和固定电容器。 第一和第二LC串联电路并联连接在第一电感器和地之间。 第一和第二电感器被配置为使得它们之间产生正耦合互感。

公开(公告)号：US20220131516A1

公开(公告)日：2022-04-28

申请号：US17570414

申请日：2022-01-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yuutarou YAMAZAKI ,  Hiroto MOTOYAMA ,  Tetsuo TANIGUCHI ,  Yuji KAMINISHI

IPC: H03H7/38 ,  H03H7/01

Abstract: A diplexer includes a low-band band pass filter between a common input/output terminal and a low-band input/output terminal and a high-band band pass filter between the common input/output terminal and a high-band input/output terminal, wherein the low-band band pass filter includes LC resonators including a first-stage LC resonator to a final-stage LC resonator in order from the common input/output terminal toward the low-band input/output terminal, the high-band band pass filter includes LC resonators including a first-stage LC resonator to a final-stage LC resonator in order from the common input/output terminal toward the high-band input/output terminal, a matching capacitor is between the common input/output terminal and the low-band band pass filter, and the capacitance of a capacitor of the first-stage LC resonator of the low-band band pass filter is smaller than the capacitance of a capacitor of the final-stage LC resonator.

公开(公告)号：US20160028145A1

公开(公告)日：2016-01-28

申请号：US14800196

申请日：2015-07-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Keisuke KATABUCHI ,  Tetsuo TANIGUCHI ,  Yasushi YUNOKI

IPC: H01P5/18

CPC classification number: H01P5/184

Abstract: A directional coupler includes a main line, a sub line, and a first parasitic element. The main line includes a first main line portion. The sub line includes a first sub line portion electromagnetically coupled with the first main line portion. The first parasitic element receives a first magnetic flux which is generated by the first main line portion when a current flows through the first main line portion and generates a second magnetic flux passing through the first sub line portion due to electromagnetic induction.

Abstract translation: 定向耦合器包括主线，副线和第一寄生元件。 主线包括第一主线部分。 子线包括与第一主线部分电磁耦合的第一子线部分。 当电流流过第一主线部分时，第一寄生元件接收由第一主线部分产生的第一磁通量，并且由于电磁感应而产生通过第一子线部分的第二磁通量。

公开(公告)号：US20230188110A1

公开(公告)日：2023-06-15

申请号：US18105298

申请日：2023-02-03

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI ,  Masayuki KIKUDA

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 device includes a dielectric substrate, first and second ground electrodes connected to a ground terminal, and resonators between the ground electrodes and electromagnetically coupled to each other. The ground electrodes are at different positions in a normal direction of the dielectric substrate. Each of the resonators includes a first capacitor electrode partially overlapping with the first ground electrode in plan view of the dielectric substrate, a second capacitor electrode partially overlapping with the second ground electrode in plan view of the dielectric substrate, and a via connecting the capacitor electrodes. The resonators include a first resonator connected to an input terminal, a second resonator connected to an output terminal, and a third resonator between the first and second resonators. Shunt electrodes are connected to the via and the ground terminal in the first and second resonators, respectively.

公开(公告)号：US20150303890A1

公开(公告)日：2015-10-22

申请号：US14754820

申请日：2015-06-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI

IPC: H03H7/01 ,  H03H7/075

CPC classification number: H03H7/0115 ,  H03H7/075 ,  H03H7/1791 ,  H03H2001/0085

Abstract: A composite LC resonator includes a ground electrode adjacent to a first principal surface of a multilayer body, a first capacitor electrode farther inward than the ground electrode and defining a first capacitor together with the ground electrode, a first electrode of a second capacitor, a second electrode of the second capacitor defining a second capacitor together with the first electrode of the second capacitor, a first via-electrode defining a first inductor, a first end of the first via-electrode electrically connected to the first capacitor electrode and a second end of the first via-electrode electrically connected to the first electrode of the second capacitor, and a second via-electrode defining a second inductor, a first end of the second via-electrode electrically connected to the second electrode of the second capacitor and a second end of the second via-electrode being electrically connected to the ground electrode.

Abstract translation: 复合LC谐振器包括与多层体的第一主表面相邻的接地电极，比接地电极更靠内侧的第一电容器电极，并且与接地电极一起限定第一电容器，第二电容器的第一电极，第二电容器 所述第二电容器的电极与所述第二电容器的第一电极一起限定第二电容器，限定第一电感器的第一通孔电极，电连接到所述第一电容器电极的所述第一通孔电极的第一端和第二电容器的第二端 电连接到第二电容器的第一电极的第一通孔电极和限定第二电感器的第二通孔电极，电连接到第二电容器的第二电极的第二通孔电极的第一端和与第二电容器的第二电极电连接的第二通孔电极， 的第二通孔电极电连接到接地电极。

公开(公告)号：US20200266793A1

公开(公告)日：2020-08-20

申请号：US16866590

申请日：2020-05-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI

IPC: H03H7/01

Abstract: In a band pass filter, a signal input into a first terminal is transmitted to a first LC resonator and a second LC resonator in this order and is then output from a second terminal. The band pass filter includes a third inductor and a third capacitor. A first end of the third inductor is electrically connected to the ground. The third capacitor is electrically connected between a second end of the third inductor and a node between the first LC resonator and the second LC resonator.

公开(公告)号：US20190305745A1

公开(公告)日：2019-10-03

申请号：US16427558

申请日：2019-05-31

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsuo TANIGUCHI

IPC: H03H7/01 ,  H03H9/24 ,  H03H7/09

Abstract: An LC resonator includes a laminate body including dielectric layers that are laminated in a lamination direction. The LC resonator includes a first capacitor, a second capacitor, and an inductor connected between the first capacitor and the second capacitor. A first end of the inductor is isolated in a direct current from a ground node by the first capacitor. A second end of the inductor is isolated in a direct current from the ground node by the second capacitor.