公开(公告)号：US5977686A

公开(公告)日：1999-11-02

申请号：US8138

申请日：1998-01-15

申请人： Michio Kadota ,  Kazuhiko Morozumi ,  Haruo Morii

发明人： Michio Kadota ,  Kazuhiko Morozumi ,  Haruo Morii

IPC分类号： H03H9/145 ,  H01L41/08 ,  H03H9/02 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/6433 ,  H03H9/02669 ,  H03H9/6463 ,  H03H9/02622

摘要： A transversal-coupled resonator type surface acoustic wave filter includes a piezoelectric substrate and first and second interdigital transducers. The piezoelectric substrate has a pair of substrate edges which are substantially parallel to each other and reflect a shear horizontal type surface wave excited and propagated on a surface of the piezoelectric substrate in a direction perpendicular to the substrate edges. The first and second interdigital transducers have the same resonance characteristics and are provided on the piezoelectric substrate. Each of the first and second interdigital transducers includes a pair of outermost electrode fingers which are arranged to be flush with the substrate edges of the piezoelectric substrate, respectively and a pair of adjacent electrode fingers which are adjacent to the pair of the outermost electrode fingers, respectively. A distance D' from one of the substrate edges of the piezoelectric substrate to a center of the corresponding adjacent electrode fingers satisfies the following inequalities:.lambda./2

摘要翻译： 横向耦合谐振器型表面声波滤波器包括压电基片和第一和第二指数间换能器。 压电基板具有基本上彼此平行的一对基板边缘，并且在垂直于基板边缘的方向上反射在压电基板的表面上激发和传播的剪切水平型表面波。 第一和第二叉指换能器具有相同的谐振特性，并且设置在压电基片上。 第一和第二叉指换能器中的每一个包括分别与压电基板的基板边缘齐平的一对最外面的电极指，以及与一对最外面的电极指相邻的一对相邻的电极指， 分别。 从压电基板的一个基板边缘到对应的相邻电极指的中心的距离D'满足以下不等式：λ/ 2

公开(公告)号：US06297712B1

公开(公告)日：2001-10-02

申请号：US09317071

申请日：1999-05-14

申请人： Michio Kadota ,  Haruo Morii ,  Kazuhiko Morozumi ,  Junya Ago ,  Hideya Horiuchi

发明人： Michio Kadota ,  Haruo Morii ,  Kazuhiko Morozumi ,  Junya Ago ,  Hideya Horiuchi

IPC分类号： H03H972

CPC分类号： H03H9/6433 ,  H03H9/02669 ,  H03H9/02779 ,  H03H9/02992 ,  H03H9/14538 ,  H03H9/6459 ,  H03H9/6469

摘要： A surface acoustic wave filter apparatus includes a plurality of stages of multi-mode filters defined by edge-reflection type surface acoustic wave devices and electrically connected in series with each other. The plurality of stages of multi-mode filters are provided on a common piezoelectric substrate and arranged in a direction which is substantially perpendicular to the propagation direction of surface acoustic waves. Ground electrodes are located between the stages of the plurality of stages of multi-mode filters.

摘要翻译： 表面声波滤波器装置包括由边缘反射型弹性表面波器件限定并且彼此串联电连接的多级多模式滤波器级。 多级滤波器的多级设置在公共压电基片上并且布置在基本上垂直于表面声波的传播方向的方向上。 接地电极位于多级过滤器的多级阶段之间。

公开(公告)号：US5986523A

公开(公告)日：1999-11-16

申请号：US131539

申请日：1998-08-10

申请人： Kazuhiko Morozumi ,  Haruo Morii ,  Michio Kadota

发明人： Kazuhiko Morozumi ,  Haruo Morii ,  Michio Kadota

IPC分类号： H03H9/02 ,  H03H9/64

CPC分类号： H03H9/02669 ,  H03H9/6436

摘要： An edge reflection longitudinally coupled surface acoustic wave filter utilizing an SH-type surface wave includes a piezoelectric substrate having two opposing edge surfaces, and first and second interdigital transducers each having a plurality of electrode fingers and being arranged on the piezoelectric substrate such that a shear horizontal surface wave excited by one of the first and second interdigital transducers is reflected between the two opposing edge surfaces to form a standing wave. Attenuation poles of frequency characteristics of the first and second interdigital transducers are adjacent to the frequency position of spurious responses determined by the distance between the two opposing edge surfaces.

摘要翻译： 利用SH型表面波的边缘反射纵向耦合表面声波滤波器包括具有两个相对的边缘表面的压电基片，以及分别具有多个电极指并且布置在压电基片上的第一和第二叉指式换能器， 由第一和第二叉指换能器中的一个激发的水平表面波在两个相对的边缘表面之间被反射以形成驻波。 第一和第二叉指换能器的频率特性的衰减极与由两个相对边缘表面之间的距离确定的杂散响应的频率位置相邻。

公开(公告)号：US20060112528A1

公开(公告)日：2006-06-01

申请号：US11268266

申请日：2005-11-03

申请人： Hideo Kidoh ,  Haruo Morii

发明人： Hideo Kidoh ,  Haruo Morii

IPC分类号： H04R17/00 ,  G01R31/28 ,  H01R9/00

CPC分类号： H03H3/08 ,  G01R31/2822 ,  Y10T29/42 ,  Y10T29/49004 ,  Y10T29/49147

摘要： In a method for manufacturing a transversal surface acoustic wave filter device, measurement pads for use in probe measurement are formed on a wafer, and are shared by adjacent transversal surface acoustic wave filter devices. The number of measurement pads is reduced to about half the standard, thereby reducing the area occupied per device.

摘要翻译： 在用于制造横向声表面波滤波器装置的方法中，在晶片上形成用于探针测量的测量垫，并且由相邻的横向声表面波滤波器装置共享。 测量焊盘的数量减少到标准的大约一半，从而减少每个设备占用的面积。

公开(公告)号：US06369673B1

公开(公告)日：2002-04-09

申请号：US09536967

申请日：2000-03-28

申请人： Chikashi Kondo ,  Seigo Hayashi ,  Haruo Morii

发明人： Chikashi Kondo ,  Seigo Hayashi ,  Haruo Morii

IPC分类号： H03H964

CPC分类号： H03H9/02984 ,  H03H9/02574 ,  H03H9/02842 ,  H03H9/09 ,  H03H9/1085

摘要： A surface acoustic wave filter includes a glass substrate, an interdigital transducer provided on the glass substrate, a piezoelectric film arranged on the glass substrate so as to cover the interdigital transducer; a terminal electrode provided on the glass substrate and electrically connected to the interdigital transducer; and a coating film having an area smaller than that of the terminal electrode. The coating film is arranged on the terminal electrode such that a portion of a top surface of the terminal electrode is exposed throughout the periphery thereof.

摘要翻译： 表面声波滤波器包括玻璃基板，设置在玻璃基板上的叉指换能器，布置在玻璃基板上以覆盖指数间换能器的压电膜; 设置在玻璃基板上并电连接到叉指式换能器的端子电极; 以及具有比端子电极的面积小的面积的涂膜。 涂覆膜布置在端子电极上，使得端子电极的顶表面的一部分在其周边暴露。

公开(公告)号：US5223762A

公开(公告)日：1993-06-29

申请号：US816291

申请日：1991-12-27

申请人： Kimio Masaie ,  Haruo Morii

发明人： Kimio Masaie ,  Haruo Morii

IPC分类号： H03H9/02 ,  H03H9/64

CPC分类号： H03H9/6433 ,  H03H9/14591 ,  H03H9/6453 ,  H03H9/6463 ,  H03H9/6476

摘要： Two surface acoustic wave resonators are transversely formed with a minute spacing between them on a piezoelectric substrate. Said two surface acoustic wave resonators are oppositely formed to each other to become line-symmetry. Each of the surface acoustic wave resonator comprises an interdigital transducer and reflectors formed on its both sides. An input terminal and an output terminal are lead from the corresponding interdigital transducer. Between the input and the output terminals, an electrostatic capacity is bridged. The electrostatic capacity is formed on, for example, a piezoelectric substrate. In this case, the electrostatic capacity may be formed by alternately interdigitating each part of comb-like electrodes of the two interdigital transducers. Furthermore, the electrostatic capacity may be formed by alternately interdigitating both parts of the two reflector electrodes.

摘要翻译： 两个表面声波谐振器在压电基板上横向形成有它们之间的微小的间隔。 所述两个表面声波谐振器彼此相对地形成为线对称。 每个声表面波谐振器包括叉指式换能器和在其两侧形成的反射器。 输入端子和输出端子从相应的叉指式换能器引出。 在输入和输出端之间，静电电容桥接。 静电电容形成在例如压电基板上。 在这种情况下，静电电容可以通过交替地交叉指向两个叉指式换能器的梳状电极的每一部分而形成。 此外，静电电容可以通过交替地交叉指向两个反射器电极的两部分而形成。