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。

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。

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。

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。

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。

公开(公告)号：US6107727A

公开(公告)日：2000-08-22

申请号：US89820

申请日：1998-06-03

申请人： Hiroaki Kaida ,  Mitsuhiro Yamada ,  Jiro Inoue

发明人： Hiroaki Kaida ,  Mitsuhiro Yamada ,  Jiro Inoue

IPC分类号： H03H9/02 ,  H03H9/13 ,  H03H9/17 ,  H03H9/205 ,  H01L41/08

CPC分类号： H03H9/178 ,  H03H9/0207 ,  H03H9/02157

摘要： A thickness extensional piezoelectric resonator includes a substantially rectangular piezoelectric strip, first and second excitation electrodes disposed on both surfaces of the piezoelectric strip, and an internal electrode disposed inside the piezoelectric strip. The first and second excitation electrodes are located on opposite sides of the piezoelectric strip. The internal electrode is located opposite to the first and second excitation electrodes. Assuming that the piezoelectric plate has a width W and a thickness t, the piezoelectric plate is constructed such that W/d is less than about 6.1 if d=t/n.

摘要翻译： 厚度延伸压电谐振器包括基本上矩形的压电条，设置在压电条的两个表面上的第一和第二激励电极以及设置在压电条内的内部电极。 第一和第二激励电极位于压电条的相对侧上。 内部电极与第一和第二激励电极相对。 假设压电板具有宽度W和厚度t，则如果d = t / n，则压电板被构造成使得W / d小于约6.1。

公开(公告)号：US5541467A

公开(公告)日：1996-07-30

申请号：US458171

申请日：1995-05-26

申请人： Hiroaki Kaida ,  Jiro Inoue

发明人： Hiroaki Kaida ,  Jiro Inoue

IPC分类号： B06B1/06 ,  G10K11/175 ,  H01L41/08

CPC分类号： G10K11/175 ,  B06B1/0648

摘要： Disclosed herein is a vibrating unit containing a vibrator for utilizing vibration of the vibrator. A vibration transfer part is coupled to a portion of the vibrator exhibiting the minimum displacement or a portion close thereto, and a resonant part is coupled to the vibration transfer part and formed to receive vibration propagated from the vibrator to the vibration transfer part to resonate. The vibrating unit utilizes a dynamic vibration absorbing phenomenon.

摘要翻译： 本文公开了一种振动器，其包含用于利用振动器振动的振动器。 振动传递部分耦合到表现出最小位移的振动器的一部分或靠近其的部分，并且谐振部分耦合到振动传递部分并且被形成为接收从振动器传播到振动传递部分以进行谐振的振动。 振动单元利用动态吸振现象。

公开(公告)号：US06232698B1

公开(公告)日：2001-05-15

申请号：US09089562

申请日：1998-06-03

申请人： Hiroaki Kaida ,  Mitsuhiro Yamada ,  Jiro Inoue

发明人： Hiroaki Kaida ,  Mitsuhiro Yamada ,  Jiro Inoue

IPC分类号： H01L4108

CPC分类号： H03H9/178 ,  H03H9/0207

摘要： An energy-trap thickness extensional vibration mode piezoelectric resonator uses a harmonic of a thickness extensional vibration mode and effectively suppresses generation of unwanted spurious vibrations. The energy-trap thickness extensional vibration mode piezoelectric resonator includes a piezoelectric strip, first and second excitation electrodes located on opposite surfaces of the piezoelectric strip, and an internal electrode disposed inside the piezoelectric strip. The first and second excitation electrodes are located on opposite ends of the piezoelectric strip in an overlapping arrangement. The internal electrode is located opposite to the first and second excitation electrodes. The first and second excitation electrodes overlap each other over a length of l such that l/d is not greater than about 6, where d=t/n.

摘要翻译： 能量陷阱厚度延伸振动模式压电谐振器使用厚度延伸振动模式的谐波，并有效地抑制不需要的寄生振动的产生。 能量阱厚度延伸振动模式压电谐振器包括压电条，位于压电条的相对表面上的第一和第二激励电极以及设置在压电条内的内部电极。 第一和第二激励电极以重叠布置位于压电条的相对端上。 内部电极与第一和第二激励电极相对。 第一和第二激发电极在l的长度上彼此重叠，使得l / d不大于约6，其中d = t / n。

公开(公告)号：US5627425A

公开(公告)日：1997-05-06

申请号：US452516

申请日：1995-05-30

申请人： Hiroaki Kaida ,  Jiro Inoue

发明人： Hiroaki Kaida ,  Jiro Inoue

IPC分类号： B06B1/06 ,  G05D19/02 ,  G10K11/08 ,  G10K11/175 ,  H01L41/08

CPC分类号： B06B1/0648 ,  B06B1/0603 ,  G05D19/02 ,  G10K11/08 ,  G10K11/175

摘要： Disclosed herein is a vibrating unit comprising vibration cancel means which is coupled to a vibration source through a vibration transfer part. The vibration cancel means receives vibration from the vibration source and resonates in a bending mode, to cancel vibration as propagated by a dynamic vibration absorbing phenomenon.

摘要翻译： 这里公开了一种振动单元，其包括通过振动传递部分耦合到振动源的振动消除装置。 振动消除装置从振动源接收振动并以弯曲模式共振，以消除由动态吸振现象传播的振动。

公开(公告)号：US06051910A

公开(公告)日：2000-04-18

申请号：US75901

申请日：1998-05-11

申请人： Hiroaki Kaida ,  Mitsuhiro Yamada ,  Jiro Inoue

发明人： Hiroaki Kaida ,  Mitsuhiro Yamada ,  Jiro Inoue

IPC分类号： H03H9/05 ,  H03H9/56 ,  H01L41/04

CPC分类号： H03H9/178 ,  H03H9/0547

摘要： A thickness extensional piezoelectric resonator utilizes harmonics of a thickness extensional vibration mode and has a significantly reduced size and significantly increased capacitance while not being susceptible to the effects of the stray capacitance of a circuit board upon which the resonator is mounted. The resonator includes a piezoelectric strip, first and second excitation electrodes located on one of two respective major surfaces of the piezoelectric strip, and internal electrodes disposed inside the piezoelectric strip. The first and second excitation electrodes are located on opposite sides of the piezoelectric strip. The internal electrodes are located opposite to the first and second excitation electrodes to thereby define a vibrating portion. Vibration-attenuating portions are located on opposite sides of the vibrating portion only along the longitudinal direction of the piezoelectric strip. No vibration-attenuating portions are located in the lateral direction of the piezoelectric strip.

摘要翻译： 厚度延伸压电谐振器利用厚度延伸振动模式的谐波，并且具有显着减小的尺寸和显着增加的电容，同时不会受到安装谐振器的电路板的杂散电容的影响。 谐振器包括压电条，位于压电条的两个相应主表面中的一个上的第一和第二激励电极以及设置在压电条内部的内部电极。 第一和第二激励电极位于压电条的相对侧上。 内部电极与第一和第二激励电极相对设置，从而限定振动部分。 振动衰减部仅沿着压电条的长度方向位于振动部的相对侧。 没有振动衰减部分位于压电条的横向方向上。