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    ELASTIC WAVE FILTER DEVICE
    21.
    发明申请
    ELASTIC WAVE FILTER DEVICE 有权
    弹性波滤波器

    公开(公告)号：US20170005638A1

    公开(公告)日：2017-01-05

    申请号：US15265912

    申请日：2016-09-15

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Masanori OTAGAWA ,  Syunsuke KIDO ,  Hideki IWAMOTO

    IPC: H03H9/64 ,  H03H9/72 ,  H03H9/54 ,  H03H9/02

    CPC classification number: H03H9/6489 ,  H03H9/02574 ,  H03H9/02818 ,  H03H9/54 ,  H03H9/6483 ,  H03H9/725

    Abstract: A SAW filter device defines a filter including a high acoustic velocity member, a low acoustic velocity film, a piezoelectric film, and an IDT electrode are stacked in this order. A comb capacitive electrode electrically coupled to the filter is provided on the piezoelectric film. Where λc is a wavelength determined by an electrode finger pitch of the comb capacitive electrode, and, among modes of an elastic wave generated by the comb capacitive electrode, VC-(P+SV) is an acoustic velocity of a P+SV wave, VC-SH is an acoustic velocity of a SH wave, and VC-HO is an acoustic velocity of, out of higher-order modes of a SH wave, a higher-order mode at the lowest frequency side, VC-(P+SV) fF-H, or VC-SH/λC fF-H.

    Abstract translation: 定义了包括高声速构件，低声速膜，压电膜和IDT电极的SAW滤波器装置。 电耦合到滤波器的梳状电容电极设置在压电膜上。 其中λc是由梳状电容电极的电极指间距决定的波长，并且在由梳状电容电极产生的弹性波的模式中，VC-（P + SV）是P + SV波的声速， VC-SH是SH波的声速，VC-HO是在SH波的高阶模式中在最低频率侧的高阶模式的声速，VC-（P + SV ） fF-H或VC- SH /λC fF-H。

    RADIO FREQUENCY MODULE AND COMMUNICATION DEVICE
    25.
    发明公开
    RADIO FREQUENCY MODULE AND COMMUNICATION DEVICE 审中-公开

    公开(公告)号：US20240022232A1

    公开(公告)日：2024-01-18

    申请号：US18474693

    申请日：2023-09-26

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Masanori KATO ,  Syunsuke KIDO

    IPC: H03H9/25 ,  H03H9/64 ,  H04B1/40

    CPC classification number: H03H9/25 ,  H03H9/6483 ,  H04B1/40

    Abstract: Degradation of characteristics is to be reduced. A hybrid filter of a radio frequency module includes an acoustic wave filter and a first circuit. A plurality of circuit elements of the first circuit include a plurality of inductors and a plurality of capacitors. A second input/output portion of the acoustic wave filter includes a first connection terminal, a second connection terminal, and a conductor portion. A second circuit of the first circuit is connected between the first connection terminal and a ground terminal and includes at least one circuit element. A third circuit of the first circuit is connected between the second connection terminal and a second signal terminal and includes at least one inductor among the plurality of inductors and at least one capacitor among the plurality of capacitors.

    ACOUSTIC WAVE DEVICE
    26.
    发明申请
    ACOUSTIC WAVE DEVICE 有权

    公开(公告)号：US20230015397A1

    公开(公告)日：2023-01-19

    申请号：US17946574

    申请日：2022-09-16

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Syunsuke KIDO ,  Tetsuya KIMURA ,  Sho NAGATOMO ,  Minefumi OUCHI

    IPC: H03H9/02 ,  H03H9/13 ,  H03H9/56

    Abstract: An acoustic wave device includes a piezoelectric layer that is made of lithium niobate or lithium tantalate, and a plurality of pairs of electrodes opposed to each other in a direction intersecting with a thickness direction of the piezoelectric layer, in which a bulk wave in a thickness shear primary mode is used or d/p is about 0.5 or lower when a thickness of the piezoelectric layer is d and a distance between centers of mutually adjacent electrodes among the plurality of pairs of electrodes is p. The plurality of pairs of electrodes include at least one pair of first electrodes of a first acoustic wave resonator and at least one pair of second electrodes of a second acoustic wave resonator. A direction orthogonal to a longitudinal direction of the second electrodes in the second acoustic wave resonator is inclined at an angle that is greater than 0° and smaller than 360° with respect to a direction orthogonal to a longitudinal direction of the first electrodes in the first acoustic wave resonator.

    MULTIPLEXER AND COMMUNICATION DEVICE
    27.
    发明申请
    MULTIPLEXER AND COMMUNICATION DEVICE 有权

    公开(公告)号：US20220345158A1

    公开(公告)日：2022-10-27

    申请号：US17811357

    申请日：2022-07-08

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Masanori KATO ,  Syunsuke KIDO ,  Yukiteru SUGAYA ,  Hiroshi MATSUBARA

    IPC: H04B1/00 ,  H04B1/10

    Abstract: A multiplexer includes filters and low pass filters. A second frequency band and a third frequency band are partially different. A first frequency band does not overlap the second frequency band and the third frequency band. One end of the filter is connected to a common terminal and the other end is connected to an input/output terminal. The low pass filter is connected in one end to the common terminal and in the other end to one end of the filter. The other end of the filter is connected to one end of the low pass filter. The other end of the low pass filter is connected to the input/output terminal. One end of the filter is connected to a node between the other end of the low pass filter and one end of the filter and the other end of the filter is connected to the input/output terminal.

    HIGH-FREQUENCY MODULE AND COMMUNICATION DEVICE
    29.
    发明申请
    HIGH-FREQUENCY MODULE AND COMMUNICATION DEVICE 有权

    公开(公告)号：US20210313962A1

    公开(公告)日：2021-10-07

    申请号：US17221014

    申请日：2021-04-02

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Yukiteru SUGAYA ,  Syunsuke KIDO ,  Masanori KATO ,  Hiroshi MATSUBARA

    IPC: H03H9/54 ,  H03H9/60 ,  H03H9/205

    Abstract: A high-frequency module includes a mounting substrate, a filter, and a common inductor. The mounting substrate includes a first main surface and a second main surface facing each other. The filter includes series arm resonators and parallel arm resonators, and is disposed on the first main surface. The mounting substrate includes a ground terminal on the second main surface. A first end of the common inductor is connected to all of the parallel arm resonators. A second end of the common inductor is connected to the ground terminal.

    FILTER DEVICE AND MULTIPLEXER
    30.
    发明申请
    FILTER DEVICE AND MULTIPLEXER 审中-公开

    公开(公告)号：US20200177154A1

    公开(公告)日：2020-06-04

    申请号：US16694446

    申请日：2019-11-25

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Keisuke NISHIO ,  Syunsuke KIDO ,  Masanori KATO ,  Hiroshi MATSUBARA

    IPC: H03H9/02 ,  H03H9/64 ,  H03H9/54 ,  H03H7/01 ,  H03H7/46 ,  H03H7/075 ,  H03H9/72 ,  H03H9/70 ,  H03H9/60

    Abstract: A filter device having a pass band and a stop band on a lower frequency side than the pass band includes a filter having a pass band including the pass band, a series arm resonator connected in series to the filter, a first inductor directly connected in series to the series arm resonator, and a parallel arm resonator connected between a node on a path connecting the filter and the series arm resonator and the ground. The parallel arm resonator constitutes a resonance circuit having a resonant frequency at which an attenuation pole corresponding to a high frequency end of the first stop band, and the series arm resonator and the inductor constitute a resonance circuit having an anti-resonant frequency on a lower frequency side than the pass band and having a sub-resonant frequency higher than a resonant frequency of the resonance circuit.

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