公开(公告)号：US20120235769A1

公开(公告)日：2012-09-20

申请号：US13415131

申请日：2012-03-08

申请人： Tadaaki TSUDA

发明人： Tadaaki TSUDA

IPC分类号： H03H9/64

CPC分类号： H03H9/14558 ,  H03H9/14505 ,  H03H9/1455 ,  H03H9/14552 ,  H03H9/14591 ,  H03H9/644 ,  H03H9/6459

摘要： There is provided a tapered elastic wave filter higher in impedance than a conventional filter where one input-side IDT electrode and one output-side IDT electrode are disposed. Filter parts which are the same in the structure of an input-side IDT electrode and in the structure of an output-side IDT electrode are disposed, and when the first filter part is disposed on a lower side and the second filter part is disposed on an upper side of the first filter part so that the input-side IDT electrodes are connected and the output-side IDT electrodes are connected, in cascade (in series) between a signal port and a ground port, an upper busbar in each of the IDT electrodes of the first filter part and a lower busbar in each of the IDT electrodes of the second filter part are electrically connected to each other.

摘要翻译： 提供了比设置有一个输入侧IDT电极和一个输出侧IDT电极的常规滤波器更高阻抗的锥形弹性波滤波器。 配置在输入侧IDT电极的结构和输出侧IDT电极的结构中相同的滤波器部件，并且当第一过滤器部件配置在下侧并且第二过滤器部件配置在 第一滤波器部分的上侧，使得输入侧IDT电极连接，并且输出侧IDT电极在信号端口和接地端口之间级联（串联）连接，每个的上母线 第一过滤器部分的IDT电极和第二过滤器部分的每个IDT电极中的下母线彼此电连接。

公开(公告)号：US07764144B2

公开(公告)日：2010-07-27

申请号：US12284668

申请日：2008-09-24

申请人： Tadaaki Tsuda

发明人： Tadaaki Tsuda

IPC分类号： H03H9/64 ,  H03H9/145

CPC分类号： H03H9/6436 ,  H03H9/14547 ,  H03H9/14558 ,  H03H9/14561 ,  H03H9/14564

摘要： In an elastic wave filter in which an IDT is configured in a tapered shape, an object of the present invention is to provide a technology capable of suppressing deterioration of attenuation characteristics due to refraction and the like of the elastic wave and also suppressing loss. Then, an input side area adjacent to an input side tapered IDT electrode of this short grating electrode and an output side area close to an output side tapered IDT electrode are made patterns continuous (as if extended) from the input side tapered IDT electrode and the output side tapered IDT electrode respectively. The areas between the input side tapered IDT electrode, the output side tapered IDT electrode and the short grating electrode are set in a manner that the cycle unit λ which is a repeating unit of the electrode fingers is continued without breaking.

摘要翻译： 在IDT构成为锥形的弹性波滤波器中，本发明的目的在于提供能够抑制弹性波的折射等引起的衰减特性的劣化，抑制损失的技术。 然后，使与该短栅格电极的输入侧锥形IDT电极相邻的输入侧区域和靠近输出侧锥形IDT电极的输出侧区域从输入侧锥形IDT电极连续（好像延伸），并且 输出侧锥形IDT电极。 输入侧锥形IDT电极，输出侧锥形IDT电极和短光栅电极之间的区域被设定为使得作为电极指的重复单元的循环单元λ不间断地继续。

公开(公告)号：US20090322449A1

公开(公告)日：2009-12-31

申请号：US12456747

申请日：2009-06-22

申请人： Tadaaki Tsuda

发明人： Tadaaki Tsuda

IPC分类号： H03H9/25

CPC分类号： H03H9/1452 ,  H03H9/02748 ,  H03H9/02795 ,  H03H9/14526 ,  H03H9/1455

摘要： To provide a transversal type filter having weighted finger electrodes of at least either of an input IDT and an output IDT provided on a piezoelectric substrate, in which a diffraction of elastic wave output from an end face of the weighted IDT electrode is suppressed, a band width is wide, and a high flatness and a high selectivity are realized. In at least either of an input IDT and an output IDT, an apodized region in which a weighting is performed by using an apodizing method with which an aperture of finger electrodes is continuously changed is formed on a center portion of the electrode with respect to a propagation direction of an elastic wave, and dog-leg regions in which a weighting is performed by using a dog-leg method with which the aperture is made into 1/n by floating electrodes to form n tracks are formed on both sides of the apodized region. Subsequently, finger electrodes in each track of the dog-leg region are further weighted by using the apodizing method.

摘要翻译： 为了提供一种具有加压指状电极的横向型滤波器，其具有设置在压电基板上的输入IDT和输出IDT中的至少一方的手指电极，其中从加权的IDT电极的端面输出的弹性波的衍射被抑制， 宽度宽，实现了高平坦度和高选择性。 在输入IDT和输出IDT中的至少一个中，在电极的中心部分上形成有通过使用手指电极的开口连续变化的变迹方式进行加权的变迹区域 弹性波的传播方向以及通过使用通过浮动电极形成n个轨道而形成1 / n的孔径的狗腿法进行加权的狗腿区域形成在变迹的 地区。 随后，通过使用变迹方法进一步对狗腿区域的每个轨迹中的指状电极进行加权。

公开(公告)号：US08125301B2

公开(公告)日：2012-02-28

申请号：US12456747

申请日：2009-06-22

申请人： Tadaaki Tsuda

发明人： Tadaaki Tsuda

IPC分类号： H03H9/145 ,  H03H9/64

CPC分类号： H03H9/1452 ,  H03H9/02748 ,  H03H9/02795 ,  H03H9/14526 ,  H03H9/1455

摘要： To provide a transversal type filter having weighted finger electrodes of at least either of an input IDT and an output IDT provided on a piezoelectric substrate, in which a diffraction of elastic wave output from an end face of the weighted IDT electrode is suppressed, a band width is wide, and a high flatness and a high selectivity are realized. In at least either of an input IDT and an output IDT, an apodized region in which a weighting is performed by using an apodizing method with which an aperture of finger electrodes is continuously changed is formed on a center portion of the electrode with respect to a propagation direction of an elastic wave, and dog-leg regions in which a weighting is performed by using a dog-leg method with which the aperture is made into 1/n by floating electrodes to form n tracks are formed on both sides of the apodized region. Subsequently, finger electrodes in each track of the dog-leg region are further weighted by using the apodizing method.

摘要翻译： 为了提供一种具有加压指状电极的横向型滤波器，其具有设置在压电基板上的输入IDT和输出IDT中的至少一方的手指电极，其中从加权的IDT电极的端面输出的弹性波的衍射被抑制， 宽度宽，实现了高平坦度和高选择性。 在输入IDT和输出IDT中的至少一个中，在电极的中心部分上形成有通过使用手指电极的开口连续变化的变迹方式进行加权的变迹区域 弹性波的传播方向以及通过使用通过浮动电极形成n个轨道而形成1 / n的孔径的狗腿法进行加权的狗腿区域形成在变迹的 地区。 随后，通过使用变迹方法进一步对狗腿区域的每个轨迹中的指状电极进行加权。

公开(公告)号：US20090085692A1

公开(公告)日：2009-04-02

申请号：US12284668

申请日：2008-09-24

申请人： Tadaaki Tsuda

发明人： Tadaaki Tsuda

IPC分类号： H03H9/64

CPC分类号： H03H9/6436 ,  H03H9/14547 ,  H03H9/14558 ,  H03H9/14561 ,  H03H9/14564

摘要： In an elastic wave filter in which an IDT is configured in a tapered shape, an object of the present invention is to provide a technology capable of suppressing deterioration of attenuation characteristics due to refraction and the like of the elastic wave and also suppressing loss. Then, an input side area adjacent to an input side tapered IDT electrode of this short grating electrode and an output side area close to an output side tapered IDT electrode are made patterns continuous (as if extended) from the input side tapered IDT electrode and the output side tapered IDT electrode respectively. The areas between the input side tapered IDT electrode, the output side tapered IDT electrode and the short grating electrode are set in a manner that the cycle unit λ which is a repeating unit of the electrode fingers is continued without breaking.

摘要翻译： 在IDT构成为锥形的弹性波滤波器中，本发明的目的在于提供能够抑制弹性波的折射等引起的衰减特性的劣化，抑制损失的技术。 然后，使与该短栅格电极的输入侧锥形IDT电极相邻的输入侧区域和靠近输出侧锥形IDT电极的输出侧区域从输入侧锥形IDT电极连续（好像延伸），并且 输出侧锥形IDT电极。 输入侧锥形IDT电极，输出侧锥形IDT电极和短光栅电极之间的区域被设定为使得电极指的重复单元的循环单元λ不间断地继续。

公开(公告)号：US06750592B2

公开(公告)日：2004-06-15

申请号：US09985898

申请日：2001-11-06

申请人： Yoshihiro Takahashi ,  Tadaaki Tsuda ,  Yasushi Yamamoto ,  Hiroshi Kawahara

发明人： Yoshihiro Takahashi ,  Tadaaki Tsuda ,  Yasushi Yamamoto ,  Hiroshi Kawahara

IPC分类号： H01L4104

CPC分类号： H03H9/02921 ,  H03H9/1071

摘要： The present invention relates to a surface acoustic wave filter in which a plurality of pairs of comb electrode patterns are formed on an upper surface of a chip substrate made of a piezoelectric material. The surface acoustic wave filter includes a high-resistance pattern formed to surround a peripheral portion of the chip substrate on an upper surface side thereof, and a plurality of patterns formed to connect the high-resistance pattern to the respective comb electrode patterns.

摘要翻译： 本发明涉及一种表面声波滤波器，其中在由压电材料制成的芯片基板的上表面上形成有多对梳状电极图案。 表面声波滤波器包括形成为围绕芯片基板的上表面侧的周边部分的高电阻图案，以及形成为将高电阻图案连接到各个梳状电极图案的多个图案。

公开(公告)号：US08207800B2

公开(公告)日：2012-06-26

申请号：US12587818

申请日：2009-10-14

申请人： Tadaaki Tsuda

发明人： Tadaaki Tsuda

IPC分类号： H03H9/64

CPC分类号： H03H9/14547 ,  H03H9/02716 ,  H03H9/14558 ,  H03H9/14561 ,  H03H9/14564 ,  H03H9/14567 ,  H03H9/643 ,  H03H9/6493

摘要： To provide an elastic wave filter capable of obtaining steep attenuation at a high band side or a low band side in a pass band and having high selectivity. An elastic wave filter is configured in a manner that when seen in a propagation direction of an elastic wave, as for respective electrode fingers composing each group of electrode fingers in an input side tapered IDT electrode and an output side tapered IDT electrode, width dimensions thereof are the same one another, and a distance dimension between the adjacent electrode fingers is formed to be the same as the width dimension of the electrode finger, when seen in the propagation direction of an elastic wave, as for a group of electrode fingers in a grating reflector, width dimensions of respective electrode fingers composing the group of the electrode fingers are the same, and a distance dimension between the adjacent electrode fingers is formed to be the same as the width dimension, and the width dimension of the electrode finger and the distance dimension between the electrode fingers are set to be equal to or less than a minimum value or equal to or more than a maximum value of the width dimension of the electrode finger and the distance dimension between the electrode fingers in the input side tapered IDT electrode and the output side tapered IDT electrode.

摘要翻译： 提供能够在通带中在高频带侧或低频带侧获得陡峭衰减并且具有高选择性的弹性波滤波器。 以弹性波的传播方向观察弹性波滤波器的结构，对于构成输入侧锥形IDT电极和输出侧锥形IDT电极中的各组电极指的各电极指，其宽度尺寸 彼此相同，并且当在弹性波的传播方向上看时，相邻电极指之间的距离尺寸形成为与电极指的宽度尺寸相同，对于一组电极指在 光栅反射器，构成电极指的组的各个电极指的宽度尺寸相同，并且相邻电极指之间的距离尺寸形成为与宽度尺寸相同，并且电极指和 电极指之间的距离尺寸被设定为等于或小于最大值的最小值或者等于或大于最大值t 电极指的宽度尺寸和输入侧锥形IDT电极和输出侧锥形IDT电极中的电极指之间的距离尺寸。

公开(公告)号：US20100102901A1

公开(公告)日：2010-04-29

申请号：US12587818

申请日：2009-10-14

申请人： Tadaaki Tsuda

发明人： Tadaaki Tsuda

IPC分类号： H03H9/64

CPC分类号： H03H9/14547 ,  H03H9/02716 ,  H03H9/14558 ,  H03H9/14561 ,  H03H9/14564 ,  H03H9/14567 ,  H03H9/643 ,  H03H9/6493

摘要： To provide an elastic wave filter capable of obtaining steep attenuation at a high band side or a low band side in a pass band and having high selectivity.An elastic wave filter is configured in a manner that when seen in a propagation direction of an elastic wave, as for respective electrode fingers composing each group of electrode fingers in an input side tapered IDT electrode and an output side tapered IDT electrode, width dimensions thereof are the same one another, and a distance dimension between the adjacent electrode fingers is formed to be the same as the width dimension of the electrode finger, when seen in the propagation direction of an elastic wave, as for a group of electrode fingers in a grating reflector, width dimensions of respective electrode fingers composing the group of the electrode fingers are the same, and a distance dimension between the adjacent electrode fingers is formed to be the same as the width dimension, and the width dimension of the electrode finger and the distance dimension between the electrode fingers are set to be equal to or less than a minimum value or equal to or more than a maximum value of the width dimension of the electrode finger and the distance dimension between the electrode fingers in the input side tapered IDT electrode and the output side tapered IDT electrode.

摘要翻译： 提供能够在通带中在高频带侧或低频带侧获得陡峭衰减并且具有高选择性的弹性波滤波器。 以弹性波的传播方向观察弹性波滤波器的结构，对于构成输入侧锥形IDT电极和输出侧锥形IDT电极中的各组电极指的各电极指，其宽度尺寸 彼此相同，并且当在弹性波的传播方向上看时，相邻电极指之间的距离尺寸形成为与电极指的宽度尺寸相同，对于一组电极指在 光栅反射器，构成电极指的组的各个电极指的宽度尺寸相同，并且相邻电极指之间的距离尺寸形成为与宽度尺寸相同，并且电极指和 电极指之间的距离尺寸被设定为等于或小于最大值的最小值或者等于或大于最大值t 电极指的宽度尺寸和输入侧锥形IDT电极和输出侧锥形IDT电极中的电极指之间的距离尺寸。

公开(公告)号：US20060197197A1

公开(公告)日：2006-09-07

申请号：US11418148

申请日：2006-05-05

申请人： Tadaaki Tsuda ,  Yasushi Yamamoto ,  Hiroshi Kawahara ,  Yoshihiro Takahashi ,  Minoru Sakai

发明人： Tadaaki Tsuda ,  Yasushi Yamamoto ,  Hiroshi Kawahara ,  Yoshihiro Takahashi ,  Minoru Sakai

IPC分类号： H01L23/495

CPC分类号： H03H9/1071 ,  H01L2224/32225 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48471 ,  H01L2224/73265 ,  H01L2224/83385 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/15153 ,  H01L2924/15165 ,  H01L2924/16152 ,  H03H9/0585 ,  Y10T29/42 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2224/48227

摘要： In the surface acoustic wave device including a lead frame made of metal in which a plurality of inner leads 9 are formed, wherein a chip 1 comprising at least one piezoelectric substrate is mounted on a resin base 3 into which a lead frame is molded integrally, are provided a wire lead section metal surface 7a that is formed by exposing a wire lead section 7, which is electrically connected with an electrode of the chip through a bonding wire 4, out of inner leads that are arranged on both sides of the chip, from the resin base, and a chip lead section metal surface 10a that is formed by exposing a chip lead section 10, which is partially covered with the chip, from the resin base.

摘要翻译： 在包括形成有多个内部引线9的由金属构成的引线框架的弹性表面波装置中，其中包括至少一个压电基板的芯片1安装在一个引线框架一体模制的树脂基座3上， 设置有引线部金属表面7A，其通过将通过接合线4与芯片的电极电连接的引线部7从配置在芯片的两侧的内部引线露出而形成 和从树脂基部暴露由芯片部分覆盖的芯片引线部10形成的芯片引线部金属面10a。

公开(公告)号：US07067963B2

公开(公告)日：2006-06-27

申请号：US09983250

申请日：2001-10-23

申请人： Tadaaki Tsuda ,  Yasushi Yamamoto ,  Hiroshi Kawahara ,  Yoshihiro Takahashi ,  Minoru Sakai

发明人： Tadaaki Tsuda ,  Yasushi Yamamoto ,  Hiroshi Kawahara ,  Yoshihiro Takahashi ,  Minoru Sakai

IPC分类号： H01L41/053

CPC分类号： H03H9/1071 ,  H01L2224/32225 ,  H01L2224/32245 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48471 ,  H01L2224/73265 ,  H01L2224/83385 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/15153 ,  H01L2924/15165 ,  H01L2924/16152 ,  H03H9/0585 ,  Y10T29/42 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2224/48227

摘要： In the surface acoustic wave device including a lead frame made of metal in which a plurality of inner leads 9 are formed, wherein a chip 1 comprising at least one piezoelectric substrate is mounted on a resin base 3 into which a lead frame is molded integrally, are provided a wire lead section metal surface 7a that is formed by exposing a wire lead section 7, which is electrically connected with an electrode of the chip through a bonding wire 4, out of inner leads that are arranged on both sides of the chip, from the resin base, and a chip lead section metal surface 10a that is formed by exposing a chip lead section 10, which is partially covered with the chip, from the resin base.

摘要翻译： 在包括形成有多个内部引线9的由金属构成的引线框架的弹性表面波装置中，其中包括至少一个压电基板的芯片1安装在一个引线框架一体模制的树脂基座3上， 设置有引线部金属表面7A，其通过将通过接合线4与芯片的电极电连接的引线部7从配置在芯片的两侧的内部引线露出而形成 和从树脂基部暴露由芯片部分覆盖的芯片引线部10形成的芯片引线部金属面10a。