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    • 1. 发明授权
    • Composite vibration device
    • 复合振动装置
    • US06717335B2
    • 2004-04-06
    • US09993963
    • 2001-11-27
    • Toshio NishimuraJiro InoueHiroaki KaidaAkihiro Mitani
    • Toshio NishimuraJiro InoueHiroaki KaidaAkihiro Mitani
    • H01L4104
    • H03H9/0514H03H9/178
    • 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.
    • 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。
    • 5. 发明授权
    • Longitudinally coupled multi-mode piezoelectric bulk wave filter device, longitudinally coupled multi-mode piezoelectric bulk wave filter, and electronic component
    • 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
    • US06822536B1
    • 2004-11-23
    • US10438908
    • 2003-05-16
    • Toshio NishimuraJiro Inoue
    • Toshio NishimuraJiro Inoue
    • H03H954
    • H03H9/581H03H9/1014H03H9/178H03H9/562
    • 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.
    • 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。
    • 6. 发明授权
    • Composite-material vibrating device
    • 复合材料振动装置
    • US06774729B2
    • 2004-08-10
    • US10434229
    • 2003-05-09
    • Hiroaki KaidaJiro InoueToshio Nishimura
    • Hiroaki KaidaJiro InoueToshio Nishimura
    • H03H956
    • H03H9/0561H03H9/1035H03H9/177
    • 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.
    • 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。
    • 9. 发明授权
    • Longitudinally-coupled multi-mode piezoelectric bulk wave filter and electronic component
    • 纵向耦合多模压电体波滤波器和电子元件
    • US06897744B2
    • 2005-05-24
    • US10436066
    • 2003-05-13
    • Akihiro MitaniToshio NishimuraHiroaki KaidaJiro Inoue
    • Akihiro MitaniToshio NishimuraHiroaki KaidaJiro Inoue
    • H03H9/10H03H9/17H03H9/56H03H9/58H01L41/107
    • H03H9/581H03H9/1014H03H9/562
    • 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.
    • 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。