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公开(公告)号：US20080079512A1
公开(公告)日：2008-04-03
申请号：US11861815
申请日：2007-09-26
CPC分类号： H03H9/0057 , H03H9/0071 , H03H9/02748 , H03H9/02992 , H03H9/14544
摘要： A SAW filter comprises an IDT disposed on a piezo-electric substrate, wherein the IDT includes comb-shaped electrodes having a plurality of interdigital electrodes arranged in a propagation direction of surface acoustic waves and bus bars for connecting these interdigital electrodes, arranged in opposition, and the interdigital electrodes are crossed with one another. The IDT comprises one or more branch electrodes branched from the interdigital electrode and positioned in a non-overlap zone between an overlap zone at which the interdigital electrodes overlap and the bus bar, and the branch electrode includes a branch electrode body extending in a direction substantially orthogonal to the propagation direction of surface acoustic wave. The SAW filter can be applied to any of a longitudinally coupled multi-mode filter, a ladder type filter, a resonator, a filter having a resonator connected in series to a longitudinally coupled multi-mode filter, and the like. A SAW filter and a SAW resonator highly resistant to damages to the electrodes with high Q and low insertion loss can be provided.
摘要翻译： SAW滤波器包括设置在压电基板上的IDT，其中IDT包括具有布置在表面声波的传播方向上的多个叉指电极的梳状电极和用于连接这些叉指电极的汇流条， 叉指电极彼此交叉。 IDT包括从叉指电极分支并且位于叉指电极重叠的重叠区域与母线之间的非重叠区域中的一个或多个分支电极，并且该分支电极包括沿基本上延伸的方向延伸的分支电极体 与表面声波的传播方向正交。 SAW滤波器可以应用于纵向耦合的多模式滤波器，梯形滤波器，谐振器，具有与纵向耦合的多模式滤波器串联连接的谐振器的滤波器等中的任何一种。 可以提供具有高Q值和低插入损耗的对电极的损坏的SAW滤波器和SAW谐振器。
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公开(公告)号：US07211925B2
公开(公告)日：2007-05-01
申请号：US11352338
申请日：2006-02-13
申请人： Kenji Inoue , Seisuke Mochizuka
发明人： Kenji Inoue , Seisuke Mochizuka
IPC分类号： H01L41/08
CPC分类号： H03H9/6483 , H03H9/14588
摘要： A surface acoustic wave device is provided with an input signal electrode 15 and an output signal electrode 16 to and from which an electric signal is inputted or outputted; a first surface acoustic wave resonator 18 including an input terminal 18a connected to the input signal electrode 15 and having a plurality of comb electrodes, an output terminal 18b connected to the output signal electrode 16 and having a plurality of comb electrodes, a common terminal 18c which has a plurality of comb electrodes and which forms interdigital transducers A and B together with the comb electrodes of the input terminal 18a and the comb electrodes of the output terminal 18b; and a second surface acoustic wave resonator 19 connected between the common terminal 18c of the first surface acoustic wave resonator 18 and a pair of grounding terminals 17.
摘要翻译： 表面声波装置设置有输入信号电极15和输出信号电极16，输入或输出电信号; 第一表面声波谐振器18，其包括连接到输入信号电极15并具有多个梳状电极的输入端子18a，连接到输出信号电极16并具有多个梳状电极的输出端子18b， 端子18c，其具有多个梳状电极，并与输入端子18a的梳状电极和输出端子18b的梳状电极一起形成叉指式换能器A和B. 以及连接在第一声表面波谐振器18的公共端子18c和一对接地端子17之间的第二声表面波谐振器19。
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公开(公告)号：US20060125349A1
公开(公告)日：2006-06-15
申请号：US11352338
申请日：2006-02-13
申请人： Kenji Inoue , Seisuke Mochizuka
发明人： Kenji Inoue , Seisuke Mochizuka
IPC分类号： H03H9/25
CPC分类号： H03H9/6483 , H03H9/14588
摘要： A surface acoustic wave device is provided with an input signal electrode 15 and an output signal electrode 16 to and from which an electric signal is inputted or outputted; a first surface acoustic wave resonator 18 including an input terminal 18a connected to the input signal electrode 15 and having a plurality of comb electrodes, an output terminal 18b connected to the output signal electrode 16 and having a plurality of comb electrodes, a common terminal 18c which has a plurality of comb electrodes and which forms interdigital transducers A and B together with the comb electrodes of the input terminal 18a and the comb electrodes of the output terminal 18b; and a second surface acoustic wave resonator 19 connected between the common terminal 18c of the first surface acoustic wave resonator 18 and a pair of grounding terminals 17.
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公开(公告)号：US20050206272A1
公开(公告)日：2005-09-22
申请号：US10800649
申请日：2004-03-16
申请人： Kenji Inoue , Seisuke Mochizuka
发明人： Kenji Inoue , Seisuke Mochizuka
CPC分类号： H03H9/6483 , H03H9/14588
摘要： A surface acoustic wave device is provided with an input signal electrode 15 and an output signal electrode 16 to and from which an electric signal is inputted or outputted; a first surface acoustic wave resonator 18 including an input terminal 18a connected to the input signal electrode 15 and having a plurality of comb electrodes, an output terminal 18b connected to the output signal electrode 16 and having a plurality of comb electrodes, a common terminal 18c which has a plurality of comb electrodes and which forms interdigital transducers A and B together with the comb electrodes of the input terminal 18a and the comb electrodes of the output terminal 18b; and a second surface acoustic wave resonator 19 connected between the common terminal 18c of the first surface acoustic wave resonator 18 and a pair of grounding terminals 17.
摘要翻译： 表面声波装置设置有输入信号电极15和输出信号电极16，输入或输出电信号; 第一表面声波谐振器18，其包括连接到输入信号电极15并具有多个梳状电极的输入端子18a，连接到输出信号电极16并具有多个梳状电极的输出端子18b， 端子18c，其具有多个梳状电极，并与输入端子18a的梳状电极和输出端子18b的梳状电极一起形成叉指式换能器A和B. 以及连接在第一声表面波谐振器18的公共端子18c和一对接地端子17之间的第二声表面波谐振器19。
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公开(公告)号：US07414494B2
公开(公告)日：2008-08-19
申请号：US11258279
申请日：2005-10-26
CPC分类号： H03H9/14588 , H03H9/6483
摘要： A surface acoustic wave apparatus includes an input terminal, an output terminal, a plurality of acoustically coupled interdigital transducers (IDT), and a phase rotating element (line or inductor) connected in parallel with one or more IDT's. The acoustically coupled IDT's are connected in series between the input and output terminals. Alternatively, the acoustically coupled IDT's may include a series IDT to which the phase rotating element is connected and which is connected in series between the input and output terminals, and a branch IDT acoustically coupled to the series IDT, and disposed on a transmission path which branches from a transmission path between the input and output terminals to a reference potential. Among the plurality of IDT's, λa≧λb is established, where λa represents an electrode finger pitch of the IDT to which the phase rotating element is connected, and λb represents an electrode finger pitch of the IDT to which no phase rotating element is connected.
摘要翻译： 表面声波装置包括输入端子，输出端子，多个声耦合叉指式换能器（IDT）以及与一个或多个IDT并联连接的相位旋转元件（线或电感器）。 声耦合IDT串联在输入和输出端子之间。 或者，声耦合IDT可以包括串联的IDT，相位旋转元件连接到该串联IDT，并串联连接在输入和输出端子之间，分支IDT声耦合到串联IDT，并且设置在传输路径上 从输入和输出端子之间的传输路径分支到参考电位。 在多个IDT中，建立lambdaa = lambdab，其中λa表示相连旋转元件连接的IDT的电极指间距，而lambdab表示没有相位旋转元件连接的IDT的电极指间距 。
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公开(公告)号：US20060091976A1
公开(公告)日：2006-05-04
申请号：US11258279
申请日：2005-10-26
CPC分类号： H03H9/14588 , H03H9/6483
摘要： A surface acoustic wave apparatus includes an input terminal, an output terminal, a plurality of acoustically coupled interdigital transducers (IDT), and a phase rotating element (line or inductor) connected in parallel with one or more IDT's. The acoustically coupled IDT's are connected in series between the input and output terminals. Alternatively, the acoustically coupled IDT's may include a series IDT to which the phase rotating element is connected and which is connected in series between the input and output terminals, and a branch IDT acoustically coupled to the series IDT, and disposed on a transmission path which branches from a transmission path between the input and output terminals to a reference potential. Among the plurality of IDT's, λa≧λb is established, where λa represents an electrode finger pitch of the IDT to which the phase rotating element is connected, and λb represents an electrode finger pitch of the IDT to which no phase rotating element is connected.
摘要翻译： 表面声波装置包括输入端子，输出端子，多个声耦合叉指式换能器（IDT）以及与一个或多个IDT并联连接的相位旋转元件（线或电感器）。 声耦合IDT串联在输入和输出端子之间。 或者，声耦合IDT可以包括串联的IDT，相位旋转元件连接到该串联IDT，并串联连接在输入和输出端子之间，分支IDT声耦合到串联IDT，并且设置在传输路径上 从输入和输出端子之间的传输路径分支到参考电位。 在多个IDT中，建立lambdaa = lambdab，其中λa表示相连旋转元件连接的IDT的电极指间距，而lambdab表示没有相位旋转元件连接的IDT的电极指间距 。
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公开(公告)号：US07847657B2
公开(公告)日：2010-12-07
申请号：US12046921
申请日：2008-03-12
IPC分类号： H03H9/64
CPC分类号： H03H9/6476 , H03H9/0038 , H03H9/0071 , H03H9/14535 , H03H9/14544
摘要： Disclosed is a surface acoustic wave filter comprising two or more IDTs arranged in a propagation direction of the surface acoustic wave, wherein said two or more IDTs include at least one pair of IDTs arranged adjacent to each other in order to be acoustically coupled to each other, and have different numbers of paired electrode fingers, and a pitch between each neighboring two of almost all of the electrode fingers included in one of the pair of IDTs which has the smaller number of paired electrode fingers is made different from one to another in order that the IDTs should include no primary pitch area.
摘要翻译： 公开了一种表面声波滤波器，包括在声表面波的传播方向上布置的两个或多个IDT，其中所述两个或多个IDT包括彼此相邻布置的至少一对IDT，以便彼此声学耦合 并且具有不同数量的成对电极指，并且使具有较少数量的成对电极指的一对IDT中的一个中的几个所有电极指的每个相邻的两个之间的间距按顺序彼此不同 IDT应该不包括主要的音调区域。
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8.发明授权Surface acoustic wave filter and resonator utilizing a branch electrode with an electrically opened end 有权表面声波滤波器和谐振器利用具有电开口端的分支电极公开(公告)号：US07671705B2
公开(公告)日：2010-03-02
申请号：US11861815
申请日：2007-09-26
CPC分类号： H03H9/0057 , H03H9/0071 , H03H9/02748 , H03H9/02992 , H03H9/14544
摘要： A SAW filter comprises an IDT disposed on a piezo-electric substrate, wherein the IDT includes comb-shaped electrodes having a plurality of interdigital electrodes arranged in a propagation direction of surface acoustic waves and bus bars for connecting these interdigital electrodes, arranged in opposition, and the interdigital electrodes are crossed with one another. The IDT comprises one or more branch electrodes branched from the interdigital electrode and positioned in a non-overlap zone between an overlap zone at which the interdigital electrodes overlap and the bus bar, and the branch electrode includes a branch electrode body extending in a direction substantially orthogonal to the propagation direction of surface acoustic wave. The SAW filter can be applied to any of a longitudinally coupled multi-mode filter, a ladder type filter, a resonator, a filter having a resonator connected in series to a longitudinally coupled multi-mode filter, and the like. A SAW filter and a SAW resonator highly resistant to damages to the electrodes with high Q and low insertion loss can be provided.
摘要翻译： SAW滤波器包括设置在压电基板上的IDT，其中IDT包括具有布置在表面声波的传播方向上的多个叉指电极的梳状电极和用于连接这些叉指电极的汇流条， 叉指电极彼此交叉。 IDT包括从叉指电极分支并且位于叉指电极重叠的重叠区域与母线之间的非重叠区域中的一个或多个分支电极，并且该分支电极包括沿基本上延伸的方向延伸的分支电极体 与表面声波的传播方向正交。 SAW滤波器可以应用于纵向耦合的多模式滤波器，梯形滤波器，谐振器，具有与纵向耦合的多模式滤波器串联连接的谐振器的滤波器等中的任何一种。 可以提供具有高Q值和低插入损耗的对电极的损坏的SAW滤波器和SAW谐振器。
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公开(公告)号：US20080238576A1
公开(公告)日：2008-10-02
申请号：US12046921
申请日：2008-03-12
IPC分类号： H03H9/00
CPC分类号： H03H9/6476 , H03H9/0038 , H03H9/0071 , H03H9/14535 , H03H9/14544
摘要： Disclosed is a surface acoustic wave filter comprising two or more IDTs arranged in a propagation direction of the surface acoustic wave, wherein said two or more IDTs include at least one pair of IDTs arranged adjacent to each other in order to be acoustically coupled to each other, and have different numbers of paired electrode fingers, and a pitch between each neighboring two of almost all of the electrode fingers included in one of the pair of IDTs which has the smaller number of paired electrode fingers is made different from one to another in order that the IDTs should include no primary pitch area.
摘要翻译： 公开了一种表面声波滤波器，包括在声表面波的传播方向上布置的两个或多个IDT，其中所述两个或多个IDT包括彼此相邻布置的至少一对IDT，以便彼此声学耦合 并且具有不同数量的成对电极指，并且使具有较少数量的成对电极指的一对IDT中的一个中的几个所有电极指的每个相邻的两个之间的间距按顺序彼此不同 IDT应该不包括主要的音调区域。
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公开(公告)号：US07112912B2
公开(公告)日：2006-09-26
申请号：US10800649
申请日：2004-03-16
申请人： Kenji Inoue , Seisuke Mochizuka
发明人： Kenji Inoue , Seisuke Mochizuka
IPC分类号： H01L41/08
CPC分类号： H03H9/6483 , H03H9/14588
摘要： A surface acoustic wave device is provided with an input signal electrode 15 and an output signal electrode 16 to and from which an electric signal is inputted or outputted; a first surface acoustic wave resonator 18 including an input terminal 18a connected to the input signal electrode 15 and having a plurality of comb electrodes, an output terminal 18b connected to the output signal electrode 16 and having a plurality of comb electrodes, a common terminal 18c which has a plurality of comb electrodes and which forms interdigital transducers A and B together with the comb electrodes of the input terminal 18a and the comb electrodes of the output terminal 18b; and a second surface acoustic wave resonator 19 connected between the common terminal 18c of the first surface acoustic wave resonator 18 and a pair of grounding terminals 17.
摘要翻译： 表面声波装置设置有输入信号电极15和输出信号电极16，输入或输出电信号; 第一表面声波谐振器18，其包括连接到输入信号电极15并具有多个梳状电极的输入端子18a，连接到输出信号电极16并具有多个梳状电极的输出端子18b， 端子18c，其具有多个梳状电极，并与输入端子18a的梳状电极和输出端子18b的梳状电极一起形成叉指式换能器A和B. 以及连接在第一声表面波谐振器18的公共端子18c和一对接地端子17之间的第二声表面波谐振器19。
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