公开(公告)号：US20160294361A1

公开(公告)日：2016-10-06

申请号：US15186619

申请日：2016-06-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi YAMANE ,  Hideki IWAMOTO ,  Keiji OKADA ,  Syunsuke KIDO ,  Masanori OTAGAWA ,  Ippei HATSUDA ,  Korekiyo ITO

IPC: H03H9/64 ,  H03H9/02 ,  H01L41/08 ,  H01L41/047 ,  H01L41/18

Abstract: An elastic wave device includes IDT electrodes stacked on a piezoelectric thin film. The IDT electrode includes a plurality of first electrode fingers and a plurality of second electrode fingers. A line connecting the distal ends of the first electrode fingers or the distal ends of the second electrode fingers extends obliquely with respect to a propagation direction of an elastic wave at an oblique angle ν. The oblique angle ν is about 0.4° or more and about 10° or less.

Abstract translation: 弹性波装置包括堆叠在压电薄膜上的IDT电极。 IDT电极包括多个第一电极指和多个第二电极指。 连接第一电极指的末端或第二电极指的远端的线相对于弹性波的倾斜角度v的传播方向倾斜地延伸。 斜角ν为约0.4°以上且约10°以下。

公开(公告)号：US20240088863A1

公开(公告)日：2024-03-14

申请号：US18515882

申请日：2023-11-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Munehisa WATANABE ,  Hideki IWAMOTO ,  Hajime KANDO ,  Syunsuke KIDO

IPC: H03H9/02 ,  H03H3/02 ,  H03H3/04 ,  H03H3/08 ,  H03H3/10 ,  H03H9/54 ,  H10N30/01 ,  H10N30/80 ,  H10N30/85 ,  H10N30/87

CPC classification number: H03H9/0222 ,  H03H3/02 ,  H03H3/04 ,  H03H3/08 ,  H03H3/10 ,  H03H9/02574 ,  H03H9/02834 ,  H03H9/54 ,  H10N30/01 ,  H10N30/80 ,  H10N30/85 ,  H10N30/87 ,  H10N30/877 ,  H03H2003/023 ,  H03H2003/027 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49155

Abstract: An elastic wave device includes a supporting substrate, a high-acoustic-velocity film stacked on the supporting substrate and in which an acoustic velocity of a bulk wave propagating therein is higher than an acoustic velocity of an elastic wave propagating in a piezoelectric film, a low-acoustic-velocity film stacked on the high-acoustic-velocity film and in which an acoustic velocity of a bulk wave propagating therein is lower than an acoustic velocity of a bulk wave propagating in the piezoelectric film, the piezoelectric film is stacked on the low-acoustic-velocity film, and an IDT electrode stacked on a surface of the piezoelectric film.

公开(公告)号：US20230402996A1

公开(公告)日：2023-12-14

申请号：US18457444

申请日：2023-08-29

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Keisuke NISHIO ,  Masanori KATO ,  Syunsuke KIDO

IPC: H03H9/64 ,  H03H9/54

CPC classification number: H03H9/6433 ,  H03H9/542

Abstract: To suppress degradation of characteristics, a high frequency module includes a mounting substrate, a first signal terminal, a second signal terminal, and ground terminals, and a hybrid filter. The hybrid filter is coupled between the first signal terminal and the second signal terminal. The hybrid filter includes an acoustic wave filter having at least one acoustic wave resonator, a first inductor, and a capacitor. The pass band width of the hybrid filter is larger than that of the acoustic wave resonator. A resin layer is disposed on a first principal surface of the mounting substrate. The resin layer covers at least part of the acoustic wave filter. A metal electrode layer covers at least part of the resin layer, and is coupled to the ground terminals. The second inductor is coupled between the hybrid filter and the second signal terminal.

公开(公告)号：US20230318573A1

公开(公告)日：2023-10-05

申请号：US18329607

申请日：2023-06-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Syunsuke KIDO ,  Naru MORITO ,  Takanori UEJIMA ,  Masanari MIURA ,  Yukiya YAMAGUCHI ,  Takuma KUROYANAGI ,  Tomomi YASUDA ,  Masanori KATO ,  Yuuki FUKUDA

IPC: H03H9/64

CPC classification number: H03H9/6406

Abstract: A hybrid filter includes a module substrate having a major surface and a major surface that are opposite to each other, acoustic wave resonator elements disposed at the module substrate, inductors disposed at the module substrate, and a capacitor disposed at the module substrate. The pass band of the hybrid filter is wider than the resonance band width of the acoustic wave resonator elements. One of the acoustic wave resonator elements, the inductors, and the capacitor is a first circuit element, and the first circuit element is disposed at the major surface. Another of the acoustic wave resonator elements, the inductors, and the capacitor is a second circuit element, and the second circuit element is disposed at the major surface.

公开(公告)号：US20230318559A1

公开(公告)日：2023-10-05

申请号：US18124634

申请日：2023-03-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Syunsuke KIDO ,  Yukiteru SUGAYA

IPC: H03H7/01 ,  H05K1/02 ,  H03H9/54

CPC classification number: H03H7/0115 ,  H05K1/0243 ,  H03H9/54 ,  H05K2201/10053 ,  H05K2201/1006

Abstract: A radio frequency module includes a first switch, a second switch, a control circuit, a first filter, a second filter, a third filter, a fourth filter, and an antenna terminal. The first switch is capable of connecting a first selection terminal or a second selection terminal to a first common terminal in a selective manner. The second switch is capable of connecting a third selection terminal or a fourth selection terminal to a second common terminal in a selective manner. The first switch, the second switch, and the control circuit are provided in a single electronic component (a first electronic component). The control circuit is positioned between the first switch and the second switch in the electronic component.

公开(公告)号：US20230268906A1

公开(公告)日：2023-08-24

申请号：US18307024

申请日：2023-04-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hirotsugu MORI ,  Syunsuke KIDO

IPC: H03H9/205 ,  H03H9/64 ,  H03H9/02 ,  H03H9/17

CPC classification number: H03H9/205 ,  H03H9/6483 ,  H03H9/02015 ,  H03H9/171

Abstract: An acoustic wave filter includes a first ladder circuit including a first series arm resonator and a first parallel arm resonator, a second ladder circuit including a second series arm resonator and a second parallel arm resonator, and a third ladder circuit including a third series arm resonator and a third parallel arm resonator. The first, second and third ladder circuits are cascade-connected in order. A condition of fas1>fas2>fas3>frp1>frp2>frp3 is satisfied, where fas1 represents an anti-resonant frequency of the first series arm resonator, fas2 represents an anti-resonant frequency of the second series arm resonator, fas3 represents an anti-resonant frequency of the third series arm resonator, frp1 represents a resonant frequency of the first parallel arm resonator, frp2 represents a resonant frequency of the second parallel arm resonator, and frp3 represents a resonant frequency of the third parallel arm resonator.

公开(公告)号：US20220239333A1

公开(公告)日：2022-07-28

申请号：US17658899

申请日：2022-04-12

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Morio TAKEUCHI ,  Syunsuke KIDO

IPC: H04B1/7163 ,  H03F3/19 ,  H03H9/54 ,  H03H7/01 ,  H03H9/64

Abstract: A radio frequency circuit includes a first acoustic wave filter that is connected to a common terminal and includes a first acoustic wave resonator, a first LC filter that is connected to the common terminal via the first acoustic wave filter and includes at least one of an inductor or a capacitor, a second acoustic wave filter that is connected to the common terminal and includes a second acoustic wave resonator, and a second LC filter that is connected to the common terminal via the second acoustic wave filter and includes at least one of an inductor or a capacitor.

公开(公告)号：US20210351809A1

公开(公告)日：2021-11-11

申请号：US17382109

申请日：2021-07-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Syunsuke KIDO

IPC: H04B1/40 ,  H03H9/54

Abstract: A high frequency filter includes series arm resonators and parallel arm resonators as acoustic wave resonators and at least one inductor, wherein capacitive components of the acoustic wave resonators constitute an LPF and an HPF as hybrid filters with an inductor or with an inductor and a capacitor, and the at least one inductor includes inductors as mount component inductors.

公开(公告)号：US20190028085A1

公开(公告)日：2019-01-24

申请号：US16032098

申请日：2018-07-11

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masanori KATO ,  Syunsuke KIDO ,  Minoru IWANAGA ,  Hiroshi MATSUBARA

IPC: H03H9/54 ,  H03H9/56 ,  H03H9/70 ,  H03H7/01 ,  H04B1/00

Abstract: A high-frequency filter coupled between an input-output terminal and another input-output terminal includes series arm resonators, parallel arm resonators, and an inductor defining an LC resonant circuit. Frequencies at a first attenuation pole defined by resonant frequencies or anti-resonant frequencies of the series arm resonators and the parallel arm resonators and a frequency at a second attenuation pole defined by a resonant frequency of the LC resonant circuit are included in one stop band of the high-frequency filter, and the frequencies at the first attenuation pole are located closer than the frequency at the second attenuation pole to a pass band of the high-frequency filter.

公开(公告)号：US20180123547A1

公开(公告)日：2018-05-03

申请号：US15794072

申请日：2017-10-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masanori KATO ,  Syunsuke KIDO

IPC: H03H7/01 ,  H03H7/38 ,  H03H9/46 ,  H04J1/04

CPC classification number: H03H7/0161 ,  H03H7/01 ,  H03H7/38 ,  H03H9/465 ,  H03H9/542 ,  H03H9/605 ,  H03H9/6483 ,  H03H2007/013 ,  H03H2009/02299 ,  H04J1/045

Abstract: A filter includes two series arm resonators electrically connected in series between two input/output terminals, a parallel arm resonator electrically connected between a ground and a series arm between the two series arm resonators, an inductor electrically connected in parallel to the two series arm resonators, and a matching circuit electrically connected between one of the two series arm resonators and one of the input/output terminals, wherein the two series arm resonators and the parallel arm resonator define a pass band of a bandpass filter, the two series arm resonators and the inductor define an LC resonant circuit, respective anti-resonant frequencies of each of the two series arm resonators and a resonant frequency of the parallel arm resonator are located in a pass band of the LC resonant circuit, and a resonant frequency of the LC resonant circuit is lower than the resonant frequency of the parallel arm resonator.