公开(公告)号：US20160276997A1

公开(公告)日：2016-09-22

申请号：US15171184

申请日：2016-06-02

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masahiro TERAMOTO

IPC: H03H7/01 ,  H03H7/42 ,  H03H7/075

CPC classification number: H03H7/0115 ,  H03H7/075 ,  H03H7/1758 ,  H03H7/1766 ,  H03H7/427 ,  H03H2001/0085 ,  H03H2007/013

Abstract: In a filter component with improved attenuation characteristics for common mode noise, an LC series resonance circuit disposed in each of a plurality of shunt circuits is connected at a first end to a first line and is grounded at a second end. The LC series resonance circuit disposed in each of the shunt circuits is grounded at a first end and is connected at a second end to a second line. With this configuration, the LC series resonance circuits resonate reliably so as to define attenuation poles. Accordingly, the resonant frequency of each of the LC series resonance circuits is set to be a frequency that effectively attenuates common mode noise.

Abstract translation: 在对于共模噪声具有改进的衰减特性的滤波器部件中，设置在多个分流电路中的每一个中的LC串联谐振电路在第一端连接到第一线并在第二端接地。 设置在每个分流电路中的LC串联谐振电路在第一端接地，并在第二端连接到第二线。 利用这种配置，LC串联谐振电路可靠地谐振，以便限定衰减极。 因此，每个LC串联谐振电路的谐振频率被设定为有效衰减共模噪声的频率。

公开(公告)号：US20240097638A1

公开(公告)日：2024-03-21

申请号：US18527442

申请日：2023-12-04

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masahiro TERAMOTO

IPC: H03H7/075 ,  H03H7/46

CPC classification number: H03H7/075 ,  H03H7/463

Abstract: A filter apparatus includes an input terminal, first and second ground electrodes opposed to each other, and first and second filters connected to the input terminal. The first filter has a first passband. The second filter has a second passband higher than the first passband. Each of the first and second filters includes resonators in stages between the first and second ground electrodes. A resonator in the first stage in the first filter includes a capacitor connected to the second ground electrode and an inductor connected between the capacitor and the first ground electrode. A resonator in the first stage in the second filter includes a capacitor connected between the input terminal and the second ground electrode and an inductor connected between the capacitor and the second ground electrode.

公开(公告)号：US20240221995A1

公开(公告)日：2024-07-04

申请号：US18610460

申请日：2024-03-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hirofumi OIE ,  Masahiro TERAMOTO

IPC: H01F27/28 ,  H01F27/29 ,  H01F27/40 ,  H03H7/00

CPC classification number: H01F27/2885 ,  H01F27/292 ,  H01F27/40 ,  H03H7/00

Abstract: To provide an electronic component capable of improving the adhesiveness of the shield conductor provided on the outer surface of the substrate body, to the substrate body, while suppressing a deterioration of the characteristics of an LC resonator provided in the substrate body. An electronic component comprises substrate body that includes substrates being insulating and laminated, and that has principal surfaces and side surface, LC resonator that includes inductor conductor disposed on substrates and capacitor conductor disposed on substrates and electrically connected to the inductor conductor, shield conductor that is disposed on principal surface and that is electrically connected to a ground, outer electrode that is disposed on principal surfaces and that is electrically connected to the LC resonator, and protective layer that covers shield conductor disposed on principal surface and principal surface, in a manner straddling interface between shield conductor disposed on principal surface and substrate body.

公开(公告)号：US20230113966A1

公开(公告)日：2023-04-13

申请号：US18064968

申请日：2022-12-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Toru YASO ,  Masahiro TERAMOTO ,  Naoya MURAKITA ,  Issei YAMAMOTO

IPC: H01L23/15 ,  H01L23/498 ,  H05K3/00 ,  H05K3/46 ,  H01L23/13 ,  H05K3/40 ,  H05K3/12

Abstract: An electronic component including: an electronic component body; at least one electrode on a surface of the electronic component body; and a cover layer having insulating properties on at least a part of a periphery of the electrode and extending across a boundary between the periphery of the electrode and the surface of the electronic component body, wherein the electrode includes, on the at least part of the periphery, a lower electrode closer to the surface of the electronic component body and an upper electrode on the lower electrode, the lower electrode extends more outward than the upper electrode to create a step at the at least part of the periphery of the electrode, and at the step at the periphery of the electrode, the cover layer extends from a surface of the upper electrode to a portion with no electrodes on the surface of the electronic component body.

公开(公告)号：US20240222009A1

公开(公告)日：2024-07-04

申请号：US18608068

申请日：2024-03-18

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hirofumi OIE ,  Masahiro TERAMOTO

IPC: H01G2/24 ,  H01F17/00 ,  H01F27/36 ,  H01G2/22 ,  H01G4/40

CPC classification number: H01G2/24 ,  H01F17/0013 ,  H01F27/36 ,  H01G2/22 ,  H01G4/40

Abstract: To provide an electronic component capable of improving the visibility of an identification mark, while maintaining the strength of a substrate body. An electronic component includes substrate body that includes a plurality of insulating substrates laminated in thickness direction and that has a pair of principal surfaces and side surface, LC resonator that includes inductor conductor disposed on at least one of the plurality of substrates, and capacitor conductor disposed on at least one of the plurality of substrates and electrically connected to inductor conductor, shield conductor that is disposed on principal surface and that is electrically connected to ground, and identification mark that is provided on surface of shield conductor.

公开(公告)号：US20230077950A1

公开(公告)日：2023-03-16

申请号：US17981600

申请日：2022-11-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takuya SATO ,  Masahiro TERAMOTO ,  Keisuke OGAWA

IPC: H03H7/42 ,  H03K19/173 ,  H03H7/01

Abstract: A filter device includes an unbalanced terminal, balanced terminals, and first and second resonant circuits. The first resonant circuit is connected to the unbalanced terminal. The second resonant circuit is connected to the balanced terminals and electromagnetically coupled with the first resonant circuit. The first resonant circuit includes a resonator in which an inductor and a capacitor are connected in parallel between the unbalanced terminal and a reference potential. The second resonant circuit includes a resonator including an inductor connected between the balanced terminals and capacitors connected in series between the balanced terminals.

公开(公告)号：US20210067124A1

公开(公告)日：2021-03-04

申请号：US17098674

申请日：2020-11-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masahiro TERAMOTO

IPC: H03H7/01 ,  H03H7/075

Abstract: A stacked composite filter device includes a stacked body having a first region and a second region that are different from each other. A first filter includes a first inductor and has a first pass band is arranged in the first region. A second filter includes a second inductor and has a second pass band on a lower frequency side than the first pass band is arranged in the second region. A first conductive structure extends in a stacking direction of the stacked body and includes one end grounded that is arranged in an area that is in the first region and adjacent to the second region. The other end of the first conductive structure is connected to the first inductor.