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    ELASTIC WAVE DEVICE
    2.
    发明申请
    ELASTIC WAVE DEVICE 审中-公开

    公开(公告)号：US20180254765A1

    公开(公告)日：2018-09-06

    申请号：US15973562

    申请日：2018-05-08

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Kenji INATE

    IPC: H03H9/64 ,  H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H03H9/72

    CPC classification number: H03H9/6496 ,  H01L41/0477 ,  H03H9/02559 ,  H03H9/02645 ,  H03H9/02685 ,  H03H9/02795 ,  H03H9/02818 ,  H03H9/14552 ,  H03H9/25 ,  H03H9/6483 ,  H03H9/725

    Abstract: An elastic wave device includes a piezoelectric substrate, a first elastic wave element on the piezoelectric substrate and including at least one first interdigital transducer electrode and a first reflector in an area of the first interdigital transducer electrode at one side in a propagation direction of elastic waves, and a second elastic wave element on the piezoelectric substrate and including at least one second interdigital transducer electrode and a second reflector in an area of the second interdigital transducer electrode at one side in the propagation direction of elastic waves. The first and second reflectors are disposed side by side in the propagation direction. A reflection member, between the first and second reflectors, reflects elastic waves in at least a direction different from the propagation direction.

    WIRELESS TEMPERATURE SENSOR BASED CHIP
    4.
    发明申请
    WIRELESS TEMPERATURE SENSOR BASED CHIP 审中-公开

    公开(公告)号：US20180209857A1

    公开(公告)日：2018-07-26

    申请号：US15858834

    申请日：2017-12-29

    Applicant: SHENZHEN HUAYUAN MICRO ELECTRONIC TECHNOLOGY CO., LTD.

    Inventor： Ning Wang ,  Yanlong Yao ,  Shaokan Liu

    IPC: G01K11/26 ,  H03H9/25 ,  H03H9/145

    CPC classification number: G01K11/265 ,  G01K1/024 ,  G01K1/14 ,  H03H9/02685 ,  H03H9/1452 ,  H03H9/14544 ,  H03H9/25

    Abstract: A wireless temperature sensor based chip comprises: an interdigital transducer, reflecting gratings, and a piezoelectric substrate. The interdigital transducer and the reflecting gratings are disposed on the piezoelectric substrate. The reflecting gratings are symmetrically disposed at two sides of the interdigital transducer. The interdigital transducer, the reflecting gratings, and the piezoelectric substrate are disposed in a housing of the sensor. Strips of the interdigital transducer vary from left to right in a grade-changing weighted manner, that is, overlapped lengths between adjacent strips vary from left to right according to a cosine function. The reflecting gratings use a metal aperture weighted manner, that is, the metal aperture is disposed between strips of the reflecting gratings. The temperature sensor based chip requires no power supply and transmission lines, can implement temperature measurement with high precision in a harsh environment.

    WIRELESS TEMPERATURE SENSOR BASED CHIP
    5.
    发明申请
    WIRELESS TEMPERATURE SENSOR BASED CHIP 审中-公开

    公开(公告)号：US20180202868A1

    公开(公告)日：2018-07-19

    申请号：US15741093

    申请日：2016-04-05

    Applicant: SHENZHEN HUAYUAN MICRO ELECTRONIC TECHNOLOGY CO., LTD.

    Inventor： Ning WANG ,  Yanlong YAO ,  Shaokan LIU

    IPC: G01K11/26 ,  G01K1/14 ,  H03H9/25 ,  H03H9/145 ,  H03H9/02

    CPC classification number: G01K11/265 ,  G01K1/024 ,  G01K1/14 ,  H03H9/02685 ,  H03H9/1452 ,  H03H9/14544 ,  H03H9/25

    Abstract: A wireless temperature sensor based chip comprises: an interdigital transducer, reflecting gratings, and a piezoelectric substrate. The interdigital transducer and the reflecting gratings are disposed on the piezoelectric substrate. The reflecting gratings are symmetrically disposed at two sides of the interdigital transducer. The interdigital transducer, the reflecting gratings, and the piezoelectric substrate are disposed in a housing of the sensor. Strips of the interdigital transducer vary from left to right in a grade-changing weighted manner, that is, overlapped lengths between adjacent strips vary from left to right according to a cosine function. The reflecting gratings use a metal aperture weighted manner, that is, the metal aperture is disposed between strips of the reflecting gratings. The temperature sensor based chip requires no power supply and transmission lines, can implement temperature measurement with high precision in a harsh environment.

    Surface acoustic wave element, method of producing the same, and method of changing resonation frequency of the same
    7.
    发明申请
    Surface acoustic wave element, method of producing the same, and method of changing resonation frequency of the same 失效
    表面声波元件及其制造方法以及改变其谐振频率的方法

    公开(公告)号：US20100201458A1

    公开(公告)日：2010-08-12

    申请号：US12656523

    申请日：2010-02-02

    Applicant: Kazuki Arakawa ,  Kazuhiko Kano ,  Shingo Jinno

    Inventor： Kazuki Arakawa ,  Kazuhiko Kano ,  Shingo Jinno

    IPC: H03H9/02

    CPC classification number: H03H9/02645 ,  H03H9/02685 ,  H03H9/02708 ,  H03H9/02724 ,  H03H9/02748 ,  H03H9/02803

    Abstract: A surface acoustic wave element includes a piezoelectric member, a comb-teeth electrode, and a reflector. The comb-teeth electrode is arranged on the piezoelectric member. The reflector is arranged on the piezoelectric member. The reflector reflects a surface acoustic wave transmitted from the comb-teeth electrode. The reflector has a plurality of areas, and each of the areas has a frequency to make a reflection efficiency the largest. At least two of the frequencies of the areas are made different from each other.

    Abstract translation: 表面声波元件包括压电元件，梳齿电极和反射器。 梳齿电极配置在压电元件上。 反射器设置在压电元件上。 反射器反射从梳齿电极传播的表面声波。 反射器具有多个区域，并且每个区域具有使反射效率最大的频率。 这些区域的至少两个频率彼此不同。

    Transversal Filter Operating Using Surface Acoustic Waves
    8.
    发明申请
    Transversal Filter Operating Using Surface Acoustic Waves 有权
    使用表面声波操作的横向滤波器

    公开(公告)号：US20100134211A1

    公开(公告)日：2010-06-03

    申请号：US12640097

    申请日：2009-12-17

    Applicant: Werner Ruile ,  Clemens Ruppel

    Inventor： Werner Ruile ,  Clemens Ruppel

    IPC: H03H9/64 ,  H03H9/54

    CPC classification number: H03H9/1452 ,  H03H9/02669 ,  H03H9/02685

    Abstract: A transversal filter operates using surface acoustic waves and has a piezoelectric substrate and an acoustic track that is arranged on the substrate and in which a first transducer and a second transducer are arranged. Each transducer has electrode fingers. A function, which characterizes the weighting of the overlap length of electrode fingers of different polarity in the second transducer, has a half main lobe and at least one side lobe. The amplitude of the lobes decreases monotonally in a direction that points to the first transducer.

    Abstract translation: 横向滤波器使用表面声波进行操作，并且具有布置在基板上并且布置有第一换能器和第二换能器的压电基板和声轨。 每个换能器都有电极指。 表征第二换能器中不同极性的电极指的重叠长度的加权的功能具有半主瓣和至少一个旁瓣。 波瓣的振幅在指向第一换能器的方向上单调减小。

    Weighted SAW reflector grating using dithered acoustic reflectors
    9.
    发明授权
    Weighted SAW reflector grating using dithered acoustic reflectors 失效
    使用抖动声反射器的加权SAW反射器光栅

    公开(公告)号：US06842091B2

    公开(公告)日：2005-01-11

    申请号：US10377333

    申请日：2003-02-28

    Applicant: David S. Yip

    Inventor： David S. Yip

    IPC: H03H9/145 ,  H03H9/02 ,  H03H9/25 ,  H03H9/64

    CPC classification number: H03H9/02685 ,  H03H9/02637

    Abstract: A reflective grating (36) for a SAW filter (10) or resonator. The reflective grating (36) is formed by selectively dithering grating grid lines (38) with respect to a uniform spaced grid of M number of grid lines (38) per each N wavelength (λ) of the grating (36) (Nλ/M), where λ is the wavelength of the center of the frequency band of interest, M and N are integers and M>N. M and N are selected so that the grating (36) does not have a net reflection when all of the grid lines (38) are uniformly spaced. By controlling the dithering pattern of the grid line in each sampling period of Nλ, any desired net distributed reflectivity from the grating can be implemented in both magnitude and phase.

    Abstract translation: 用于SAW滤波器（10）或谐振器的反射光栅（36）。 反射光栅（36）通过相对于格栅（36）的每个N波长（λ）的M个格网线（38）的均匀隔开的网格选择性地抖动光栅格线（38）（Nlambda / M ），其中λ是感兴趣频带的中心的波长，M和N是整数，M> N。 选择M和N，使得当所有格栅线（38）均匀间隔时，光栅（36）不具有净反射。 通过控制Nlambda的每个采样周期中网格线的抖动模式，可以在幅度和相位两者中实现来自光栅的任何期望的净分布反射率。

    Ladder saw filter contained in a single acoustic track
    10.
    发明授权
    Ladder saw filter contained in a single acoustic track 失效
    梯形锯过滤器包含在单个声道中

    公开(公告)号：US5682126A

    公开(公告)日：1997-10-28

    申请号：US574604

    申请日：1995-12-18

    Applicant: Viktor P. Plesski ,  Thor Thorvaldsson ,  Serguei N. Kondratiev

    Inventor： Viktor P. Plesski ,  Thor Thorvaldsson ,  Serguei N. Kondratiev

    IPC: H03H9/145 ,  H03H9/00 ,  H03H9/02 ,  H03H9/64

    CPC classification number: H03H9/0028 ,  H03H9/02685 ,  H03H9/6483

    Abstract: A first interdigitated transducer and a second interdigitated transducer are disposed such that an acoustic port of the first interdigitated transducer confronts an acoustic port of the second interdigitated transducer. A first electric terminal of respective interdigitated transducers are electrically coupled together. The first and second interdigitated transducers have different resonance frequencies and may be acoustically coupled.

    Abstract translation: 第一交叉换能器和第二叉指换能器被布置成使得第一叉指式换能器的声波口面对第二叉指式换能器的声波端口。 相应的叉指式换能器的第一电端子电耦合在一起。 第一和第二交叉换能器具有不同的谐振频率并且可以是声学耦合的。

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