公开(公告)号：US5151672A

公开(公告)日：1992-09-29

申请号：US627025

申请日：1990-12-13

申请人： Kazuyuki Noto ,  Isao Toyoshima

发明人： Kazuyuki Noto ,  Isao Toyoshima

IPC分类号： H03H9/54 ,  H03H9/58

CPC分类号： H03H9/581 ,  H03H9/542 ,  H03H9/545

摘要： In a trap circuit a plurality of cascade-connected three-terminal piezoelectric ceramic resonators having different resonance frequencies, an inductor is connected between input and output terminals of only the resonator having the lowest resonance frequency, and a resistor is connected between input and output terminals of each remaining resonator, so that large attenuation is attained at the respective resonance frequencies and a large attenuation is attained in intermediate regions between the resonance frequencies. Thus, unwanted signals can be eliminated over a large bandwidth.

摘要翻译： 在陷波电路中，具有不同共振频率的多个级联连接的三端压电陶瓷谐振器，电感器连接在仅具有最低谐振频率的谐振器的输入和输出端之间，并且电阻器连接在输入和输出端 使得在相应谐振频率处获得大的衰减，并且在谐振频率之间的中间区域获得大的衰减。 因此，可以在大的带宽上消除不需要的信号。

公开(公告)号：US5350965A

公开(公告)日：1994-09-27

申请号：US88512

申请日：1993-07-06

申请人： Kazuyuki Noto ,  Takasi Yosinaga

发明人： Kazuyuki Noto ,  Takasi Yosinaga

IPC分类号： H03H3/007 ,  H03H9/13 ,  H03H9/17 ,  H03H9/54 ,  H03H9/56 ,  H01L41/08

CPC分类号： H03H9/562

摘要： A piezoelectric resonator vibrating in the thickness shear-slide mode comprises an elongated ceramic piezoelectric substrate, first and second terminal electrodes formed on both end portions of a front major surface thereof and first and a second vibrating electrodes connected with the first and the second terminal electrodes through first and second extracting electrodes respectively. A third terminal electrode is formed on a central portion of a rear major surface of the substrate, while a third vibrating electrode is formed at a position opposite to the first and the second vibrating electrodes, so that the third terminal electrode is connected with the third vibrating electrode through a third extracting electrode. An auxiliary electrode extends from the third vibrating electrode toward a position opposed to the first terminal electrode. An overlap area of the auxiliary electrode and the first terminal electrode is substantially equal to that of the second extracting electrode and the third terminal electrode. Thus, stray capacitance between the first and the third terminal electrodes and that between the second and the third terminal electrodes are balanced such that the piezoelectric resonator becomes electrically nonpolarized.

摘要翻译： 在厚度剪切滑动模式下振动的压电谐振器包括细长的陶瓷压电基片，形成在其前主表面的两个端部上的第一和第二端子电极和与第一和第二端子电极连接的第一和第二振动电极 分别通过第一和第二提取电极。 第三端子电极形成在基板的后主表面的中心部分上，而第三振动电极形成在与第一和第二振动电极相对的位置处，使得第三端子电极与第三端子电极连接 振动电极通过第三提取电极。 辅助电极从第三振动电极向与第一端子电极相对的位置延伸。 辅助电极和第一端子电极的重叠区域基本上等于第二提取电极和第三端子电极的重叠区域。 因此，平衡第一和第三端子电极之间的杂散电容以及第二和第三端子电极之间的杂散电容，使得压电谐振器变得非电极化。

公开(公告)号：US5410789A

公开(公告)日：1995-05-02

申请号：US150848

申请日：1993-11-12

申请人： Kazuyuki Noto ,  Jiro Miyazaki ,  Taketoshi Hino ,  Daisaku Kugou

发明人： Kazuyuki Noto ,  Jiro Miyazaki ,  Taketoshi Hino ,  Daisaku Kugou

IPC分类号： H03H3/02 ,  H03H9/05 ,  H01L41/22 ,  H01L41/08

CPC分类号： H03H9/1035 ,  H03H3/02 ,  Y10T29/42

摘要： In a chip-type piezoelectric-resonator, which is protected with thermosetting resin, mother sheets are bonded to cover both major surfaces of a mother substrate having a plurality of piezoelectric resonance elements which are provided on a piezoelectric substrate, in order to properly form vibrating spaces. The mother sheets are provided with concave portions for defining cavities for vibration. Then, protective resin is applied to cover the mother substrate which is bonded with the mother sheets, and thereafter the mother substrate is divided so as to obtain a plurality of chip-type piezoelectric-resonators.

摘要翻译： 在用热固性树脂保护的片式压电谐振器中，母片被接合以覆盖具有设置在压电基板上的多个压电谐振元件的母基板的主表面，以便适当地形成振动 空格 母片设置有用于限定振动腔的凹部。 然后，施加保护树脂以覆盖与母片接合的母基板，然后分割母基板，以获得多个芯片型压电谐振器。