利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

51 条记录 (耗时 0.025 秒)

    Composite vibration device
    1.
    发明授权
    Composite vibration device 有权
    复合振动装置

    公开(公告)号：US06717335B2

    公开(公告)日：2004-04-06

    申请号：US09993963

    申请日：2001-11-27

    申请人： Toshio Nishimura ,  Jiro Inoue ,  Hiroaki Kaida ,  Akihiro Mitani

    发明人： Toshio Nishimura ,  Jiro Inoue ,  Hiroaki Kaida ,  Akihiro Mitani

    IPC分类号： H01L4104

    CPC分类号： H03H9/0514 ,  H03H9/178

    摘要： A composite vibration device includes a piezoelectric element defining a vibrating member, which is made of a material having a first acoustical impedance, first and second reflecting layers are connected to respective end surfaces of the piezoelectric element, each of the layers are made of a material having a second acoustical impedance lower than the first acoustical impedance, and first and second supporting members. Each of the first and second supporting members is made of a material having an acoustical impedance higher than the second acoustical impedance and is connected to the outer surface of each of the first and second reflecting layers. Vibrations propagated from the piezoelectric element are reflected at the interfaces between the reflecting layers and the supporting members.

    摘要翻译： 复合振动装置包括限定由具有第一声阻抗的材料制成的振动部件的压电元件，第一和第二反射层连接到压电元件的相应端表面，每个层由材料制成 具有低于第一声阻抗的第二声阻抗，以及第一和第二支撑构件。 第一和第二支撑构件中的每一个由具有高于第二声阻抗的声阻抗的材料制成，并且连接到第一和第二反射层中的每一个的外表面。 从压电元件传播的振动在反射层和支撑构件之间的界面处被反射。

    Composite-material vibrating device
    2.
    发明授权
    Composite-material vibrating device 失效
    复合材料振动装置

    公开(公告)号：US06774729B2

    公开(公告)日：2004-08-10

    申请号：US10434229

    申请日：2003-05-09

    申请人： Hiroaki Kaida ,  Jiro Inoue ,  Toshio Nishimura

    发明人： Hiroaki Kaida ,  Jiro Inoue ,  Toshio Nishimura

    IPC分类号： H03H956

    CPC分类号： H03H9/0561 ,  H03H9/1035 ,  H03H9/177

    摘要： A composite-material vibrating device includes a vibrating member, at least three reflective layers, and holding members. The vibrating member is made of material having a first acoustic impedance Z1 and that functions as a vibration generating source. The at least three reflective layers are made of material having a second acoustic impedance Z2 that is smaller than the first acoustic impedance Z1, and are coupled to respective outer surfaces located along three directions of the vibrating member. The holding members are made of a material having a third acoustic impedance Z3 that is greater than the second acoustic impedance Z2 and that are coupled to surfaces opposite to the surfaces, coupled to the vibrating member, of the reflective layers. Vibrations that have propagated from the vibrating member to the reflective layers are reflected at interfaces between the reflective layers and the corresponding holding members.

    摘要翻译： 复合材料振动装置包括振动构件，至少三个反射层和保持构件。 振动构件由具有第一声阻抗Z1并用作振动产生源的材料制成。 所述至少三个反射层由具有小于第一声阻抗Z1的第二声阻抗Z2的材料制成，并且被耦合到沿着振动构件的三个方向定位的相应外表面。 保持构件由具有大于第二声阻抗Z2的第三声阻抗Z3的材料制成，并且耦合到耦合到反射层的与振动构件的表面相反的表面。 从振动构件向反射层传播的振动在反射层和相应的保持构件之间的界面处被反射。

    Piezoelectric filter using LiTaO.sub.3 substrate
    3.
    发明授权
    Piezoelectric filter using LiTaO.sub.3 substrate 失效
    使用LiTaO3基板的压电滤波器

    公开(公告)号：US5608362A

    公开(公告)日：1997-03-04

    申请号：US227631

    申请日：1994-04-14

    申请人： Toshio Nishimura ,  Jiro Inoue ,  Hiroaki Kaida

    发明人： Toshio Nishimura ,  Jiro Inoue ,  Hiroaki Kaida

    IPC分类号： H03H9/56 ,  H03H9/00 ,  H03H9/58

    CPC分类号： H03H9/02031 ,  H03H9/562

    摘要： A multi-mode piezoelectric filter includes a piezoelectric substrate made of a LiTaO.sub.3 single crystal, a plurality of spaced electrodes which are formed adjacently on a front major surface of the substrate, and a counter electrode which is formed on a rear major surface of the substrate in opposition to the spaced electrodes. The spaced electrodes and the counter electrode coact with the intervening portion of the substrate to form two or more energy trapped type multi-mode filter elements vibrating in the thickness shear mode such that the filter elements are coupled to form a cascade connection. Damping material such as silicone gel is applied at least on the filter elements.

    摘要翻译： 多模式压电滤波器包括由LiTaO 3单晶制成的压电基板，在基板的前主表面上相邻形成的多个间隔开的电极和形成在基板的后主表面上的对电极 与间隔开的电极相对。 间隔开的电极和对置电极与衬底的中间部分共同形成在厚度剪切模式下振动的两个或更多个能量捕获型多模式过滤器元件，使得过滤元件联接以形成级联连接。 阻挡材料如硅凝胶至少施加在过滤元件上。

    Longitudinally-coupled multi-mode piezoelectric bulk wave filter and electronic component
    4.
    发明授权
    Longitudinally-coupled multi-mode piezoelectric bulk wave filter and electronic component 失效
    纵向耦合多模压电体波滤波器和电子元件

    公开(公告)号：US06897744B2

    公开(公告)日：2005-05-24

    申请号：US10436066

    申请日：2003-05-13

    申请人： Akihiro Mitani ,  Toshio Nishimura ,  Hiroaki Kaida ,  Jiro Inoue

    发明人： Akihiro Mitani ,  Toshio Nishimura ,  Hiroaki Kaida ,  Jiro Inoue

    IPC分类号： H03H9/10 ,  H03H9/17 ,  H03H9/56 ,  H03H9/58 ,  H01L41/107

    CPC分类号： H03H9/581 ,  H03H9/1014 ,  H03H9/562

    摘要： A longitudinally-coupled multi-mode piezoelectric bulk wave filter using the piezoelectric longitudinal effect includes a plurality of excitation electrodes extending substantially parallel to each other, a laminated piezoelectric body including a plurality of piezoelectric layers arranged between the excitation electrodes and polarized in a predetermined direction, an input electrode and output electrode disposed on a first side surface of the laminated piezoelectric body, and a ground electrode disposed on a second side surface of the laminated piezoelectric body. When an input signal is applied between the input electrode and the ground electrode, vibration modes of different orders of harmonic waves are excited and coupled so that an output signal is output between the output terminal and the ground terminal. Let T represent the dimension of the width between the opposed first and second side surfaces of the laminated piezoelectric body and D represent the distance between the adjacent excitation electrodes, and T/D is equal to or smaller than about 0.9. As a result, a longitudinally-coupled multi-mode piezoelectric bulk wave filter presenting a large out-of-band attenuation is provided.

    摘要翻译： 使用压电纵向效应的纵向耦合多模式压电体波滤波器包括彼此平行延伸的多个激励电极，层叠压电体，其包括布置在激励电极之间并沿预定方向极化的多个压电层 设置在层叠压电体的第一侧面上的输入电极和输出电极，以及设置在层叠压电体的第二侧面的接地电极。 当在输入电极和接地电极之间施加输入信号时，激励和耦合不同阶次谐波的振动模式，从而在输出端子和接地端子之间输出输出信号。 T表示叠层压电体的相对的第一和第二侧表面之间的宽度的尺寸，D表示相邻的激励电极之间的距离，T / D等于或小于约0.9。 结果，提供了具有大的带外衰减的纵向耦合多模压电体波滤波器。

    Longitudinally coupled multi-mode piezoelectric bulk wave filter and electronic components using the same
    5.
    发明授权
    Longitudinally coupled multi-mode piezoelectric bulk wave filter and electronic components using the same 失效
    纵向耦合多模压电体波滤波器和使用其的电子元件

    公开(公告)号：US06784763B2

    公开(公告)日：2004-08-31

    申请号：US10434230

    申请日：2003-05-09

    申请人： Toshio Nishimura ,  Jiro Inoue ,  Hiroaki Kaida

    发明人： Toshio Nishimura ,  Jiro Inoue ,  Hiroaki Kaida

    IPC分类号： H03H900

    CPC分类号： H03H9/562

    摘要： In a longitudinally coupled multi-mode piezoelectric bulk wave filter, a laminated piezoelectric body obtained by overlapping a plurality of excitation electrodes with piezoelectric layers therebetween and piezoelectric portions aligned with the laminated piezoelectric body are integrated. The thickness of each of the piezoelectric portions is greater than the thickness of the laminated piezoelectric body. The input electrode, the output electrode, and the ground electrode are connected to the respective excitation electrodes of the piezoelectric body. When an input signal is applied between the input electrode and the ground electrode, harmonics, with a plurality of different orders of vibrations, using the piezoelectric longitudinal effect are efficiently generated and are combined to produce the filter characteristic.

    摘要翻译： 在纵向耦合的多模式压电体波滤波器中，将通过与其间具有压电层的多个激励电极重叠而得到的层压型压电体与与叠层型压电体对准的压电部分整合。 每个压电部分的厚度大于叠层压电体的厚度。 输入电极，输出电极和接地电极连接到压电体的各个激励电极。 当在输入电极和接地电极之间施加输入信号时，使用压电纵向效应产生具有多个不同振动次数的谐波，并且将其组合以产生滤波器特性。

    Longitudinally coupled multi-mode piezoelectric filter
    6.
    发明授权
    Longitudinally coupled multi-mode piezoelectric filter 有权

    公开(公告)号：US06608428B2

    公开(公告)日：2003-08-19

    申请号：US10004224

    申请日：2001-11-02

    申请人： Toshio Nishimura ,  Jiro Inoue

    发明人： Toshio Nishimura ,  Jiro Inoue

    IPC分类号： H03H954

    CPC分类号： H03H9/562

    摘要： A longitudinally coupled multi-mode piezoelectric filter is constructed to use a piezoelectric stiffened effect. The piezoelectric filter includes a multilayer piezoelectric element having at least four excitation electrodes arranged substantially parallel to one another and a plurality of piezoelectric layers which are arranged between the excitation electrodes and which are polarized in a predetermined direction. The piezoelectric filter further includes an input electrode, an output electrode, and a ground electrode. Application of an input signal between the input electrode and the ground electrode causes vibration of different order modes to be excited and coupled, such that an output signal is extracted between the output electrode and the ground electrode.

    Longitudinally coupled multi-mode piezoelectric bulk wave filter device, longitudinally coupled multi-mode piezoelectric bulk wave filter, and electronic component
    9.
    发明授权
    Longitudinally coupled multi-mode piezoelectric bulk wave filter device, longitudinally coupled multi-mode piezoelectric bulk wave filter, and electronic component 失效
    纵向耦合多模压电体波滤波器件，纵向耦合多模压电体波滤波器和电子元器件

    公开(公告)号：US06822536B1

    公开(公告)日：2004-11-23

    申请号：US10438908

    申请日：2003-05-16

    申请人： Toshio Nishimura ,  Jiro Inoue

    发明人： Toshio Nishimura ,  Jiro Inoue

    IPC分类号： H03H954

    CPC分类号： H03H9/581 ,  H03H9/1014 ,  H03H9/178 ,  H03H9/562

    摘要： A longitudinally coupled multi-mode piezoelectric bulk wave filter device which is manufactured at low cost, presents a wide bandwidth, results in a large attenuation, and includes first and second piezoelectric bulk wave filters which are mounted on a casing substrate. The first and second piezoelectric bulk wave filters are arranged such that the distance between the ground electrodes of the first and second piezoelectric bulk wave filters is smaller than the distance between input electrodes of the first and second piezoelectric bulk wave filters and the distance between output electrodes of the first and second piezoelectric bulk wave filters. When an input signal is applied between the input electrode and the ground electrode, harmonic waves of different orders are excited and coupled. A filter output is provided between the output electrode and the ground electrode.

    摘要翻译： 以低成本制造的纵向耦合的多模式压电体波滤波器装置具有宽带宽，导致大的衰减，并且包括安装在壳体基板上的第一和第二压电体波滤波器。 第一和第二压电体波滤波器被布置成使得第一和第二压电体波滤波器的接地电极之间的距离小于第一和第二压电体波滤波器的输入电极之间的距离和输出电极之间的距离 的第一和第二压电体波滤波器。 当在输入电极和接地电极之间施加输入信号时，不同阶次的谐波被激发并耦合。 在输出电极和接地电极之间提供滤波器输出。