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公开(公告)号：US20140375397A1
公开(公告)日：2014-12-25
申请号：US14478137
申请日：2014-09-05
发明人： Takahiro NORICHI
IPC分类号： H03H9/64
CPC分类号： H03H9/0047 , H03H9/0057 , H03H9/14588 , H03H9/6469
摘要： A longitudinally-coupled-resonator-type surface acoustic wave filter includes an unbalanced terminal, balanced terminals, a piezoelectric substrate, a first surface acoustic wave filter unit, a second surface acoustic wave filter unit, an unbalanced signal wiring line, balanced signal wiring lines, a pair of interstage wiring lines that connect the first surface acoustic wave filter unit and the second surface acoustic wave filter unit to each other, and ground wiring lines. The first surface acoustic wave filter unit includes a first IDT and a pair of a second IDT and a third IDT. The first IDT includes a pair of first divided comb tooth shaped electrodes obtained by dividing a comb tooth shaped electrode on the side spaced from the unbalanced terminal along a central axis.
摘要翻译： 纵向耦合谐振器型表面声波滤波器包括不平衡端子，平衡端子，压电基板，第一表面声波滤波器单元，第二表面声波滤波器单元，不平衡信号布线，平衡信号布线 ，将第一声表面波滤波器单元和第二声表面波滤波器单元彼此连接的一对级间布线，以及接地布线。 第一表面声波滤波器单元包括第一IDT和一对第二IDT和第三IDT。 第一IDT包括一对第一分开的梳齿状电极，其通过沿与中心轴线不平衡端子间隔开的一侧分割梳齿状电极而获得。
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公开(公告)号：US09425763B2
公开(公告)日：2016-08-23
申请号：US14478137
申请日：2014-09-05
发明人： Takahiro Norichi
CPC分类号： H03H9/0047 , H03H9/0057 , H03H9/14588 , H03H9/6469
摘要： A longitudinally-coupled-resonator-type surface acoustic wave filter includes an unbalanced terminal, balanced terminals, a piezoelectric substrate, a first surface acoustic wave filter unit, a second surface acoustic wave filter unit, an unbalanced signal wiring line, balanced signal wiring lines, a pair of interstage wiring lines that connect the first surface acoustic wave filter unit and the second surface acoustic wave filter unit to each other, and ground wiring lines. The first surface acoustic wave filter unit includes a first IDT and a pair of a second IDT and a third IDT. The first IDT includes a pair of first divided comb tooth shaped electrodes obtained by dividing a comb tooth shaped electrode on the side spaced from the unbalanced terminal along a central axis.
摘要翻译： 纵向耦合谐振器型表面声波滤波器包括不平衡端子，平衡端子，压电基板，第一表面声波滤波器单元，第二表面声波滤波器单元，不平衡信号布线，平衡信号布线 ，将第一声表面波滤波器单元和第二声表面波滤波器单元彼此连接的一对级间布线，以及接地布线。 第一表面声波滤波器单元包括第一IDT和一对第二IDT和第三IDT。 第一IDT包括一对第一分开的梳齿状电极，其通过沿与中心轴线不平衡端子间隔开的一侧分割梳齿状电极而获得。
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公开(公告)号：US20130214873A1
公开(公告)日：2013-08-22
申请号：US13857169
申请日：2013-04-05
发明人： Yuichi TAKAMINE
IPC分类号： H03H9/72
CPC分类号： H03H7/42 , H03H9/0047 , H03H9/0085 , H03H9/0576 , H03H9/059 , H03H9/1085 , H03H9/14582 , H03H9/6433 , H03H9/725
摘要： In an elastic wave demultiplexer having excellent isolation characteristics, a first ground wiring electrode is connected to a second ground wiring electrode, via first ground via-hole electrodes. The first ground wiring electrode is connected to ground land electrodes via second ground via-hole electrodes. The second ground wiring electrode is connected to a ground terminal via third ground via-hole electrodes. The number of the first ground via-hole electrodes is greater than the number of the second ground via-hole electrodes and the number of the third ground via-hole electrodes.
摘要翻译： 在具有优异的隔离特性的弹性波解复用器中，第一接地布线电极通过第一接地通孔电极连接到第二接地布线电极。 第一接地布线电极经由第二接地通孔电极连接到接地电极。 第二接地线电极通过第三接地通孔电极连接到接地端子。 第一接地通孔电极的数量大于第二接地通孔电极的数量和第三接地通孔电极的数量。
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公开(公告)号：US07038353B2
公开(公告)日：2006-05-02
申请号：US10220759
申请日：2001-12-13
申请人： Yoshio Maeda , Shouichi Komatsu , Yusuke Kinoshita
发明人： Yoshio Maeda , Shouichi Komatsu , Yusuke Kinoshita
IPC分类号： H03H9/25
CPC分类号： H03H9/0542 , H03H3/08 , H03H9/0038 , H03H9/0047 , H03H9/02669 , H03H2260/00
摘要： The invention provides a piezoelectric substrate in the form of a rectangular plate in which a Rayleigh wave is propagated, and an IDT and a reflector are provided by forming interdigital electrodes on the piezoelectric substrate. At least an end face on a shorter side of the piezoelectric substrate on a top side thereof is formed as a vertical smooth surface that is substantially in parallel with a conductor strip at an end of the reflector in the position of an imaginary node of a stress wave exiting the conductor strip, thereby providing a reflecting end face to reflect the stress wave.
摘要翻译： 本发明提供了一种矩形板形式的压电基片，其中瑞利波被传播，并且通过在压电基片上形成叉指电极来提供IDT和反射器。 至少在其顶侧的压电基板的较短侧上的端面形成为垂直平滑表面，其基本上与反射器的端部处的导体条平行，处于应力的虚拟节点的位置 离开导体条，从而提供反射端面以反映应力波。
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公开(公告)号：US07579928B2
公开(公告)日：2009-08-25
申请号：US11729953
申请日：2007-03-30
申请人： Kazuhiro Otsuka , Tsuyoshi Nakai , Hiroyuki Tanaka
发明人： Kazuhiro Otsuka , Tsuyoshi Nakai , Hiroyuki Tanaka
CPC分类号： H03H9/0047 , H03H9/0057
摘要： A surface acoustic wave device includes front stage and rear stage surface acoustic wave elements, a signal wiring connecting between the front stage and rear stage surface acoustic wave elements, a reference potential wiring connected with the rear stage surface acoustic wave element and a capacitor made of an insulator interposed between the signal wiring and the reference potential wiring. A surface acoustic wave device includes a front stage surface acoustic wave resonator, a rear stage surface acoustic wave element, a signal wiring connecting between the front stage surface acoustic wave resonator and the rear stage surface acoustic wave element, a reference potential wiring connected with the rear stage surface acoustic wave element and a capacitor made of an insulator interposed between the signal wiring and the reference potential wiring. A communication device includes the surface acoustic wave device described above, a receiver circuit or a transmitter circuit.
摘要翻译： 表面声波装置包括前级和后级表面声波元件，连接在前级和后级声表面波元件之间的信号线，与后级声表面波元件连接的参考电位线和由 介于信号布线和参考电位布线之间的绝缘体。 表面声波装置包括前级表面声波谐振器，后级声表面波元件，连接在前级声表面波谐振器和后级表面声波元件之间的信号线，与 后级表面声波元件和由绝缘体制成的电容器，其插入在信号布线和参考电位布线之间。 通信装置包括上述表面声波装置，接收器电路或发送器电路。
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公开(公告)号：US20030020367A1
公开(公告)日：2003-01-30
申请号：US10220759
申请日：2002-09-05
发明人： Yoshio Maeda , Shouichi Komatsu , Yusuke Kinoshita
IPC分类号： H03H009/25
CPC分类号： H03H9/0542 , H03H3/08 , H03H9/0038 , H03H9/0047 , H03H9/02669 , H03H2260/00
摘要： There is provided a piezoelectric substrate (12) in the form of a rectangular plate in which a Rayleigh wave is propagated and an IDT (13) and a reflector (14) provided by forming interdigital electrodes on the piezoelectric substrate. At least an end face on a shorter side of the piezoelectric substrate on a top side thereof is formed as a vertical smooth surface that is substantially in parallel with a conductor strip at an end of the reflector (14) in the position of an imaginary node (J) of a stress wave (T) exiting the conductor strip, there by providing a reflecting end face (15, 16) for reflecting the stress wave.
摘要翻译： 提供了一种矩形板形式的压电衬底（12），其中瑞利波被传播，并且通过在压电衬底上形成叉指电极而提供的IDT（13）和反射器（14）。 至少在其顶侧的压电基板的较短侧上的端面形成为垂直平滑表面，其基本上与反射器（14）的端部处的导体条平行，在假想节点 通过设置用于反射应力波的反射端面（15,16），在离开导体条的应力波（T）的距离（J）。
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公开(公告)号：US20190089324A1
公开(公告)日：2019-03-21
申请号：US15711155
申请日：2017-09-21
申请人： SnapTrack, Inc.
CPC分类号： H03H9/643 , H03H9/0047 , H03H9/02637 , H03H9/14555 , H03H9/14582 , H03H9/25 , H03H9/6433 , H03H9/6436 , H03H9/6466
摘要： Techniques are disclosed for increasing capacitance, decreasing losses, and/or improving a quality factor of a SAW filter. The techniques include using a partial-IDT instead of a reflector between two groups of IDTs. The partial-IDT is implemented having a cavity transition on a first end and a reflector transition on a second end. The cavity transition facilitates propagation of main-resonance acoustic waves into, or between elements of, the partial-IDT. The reflector transition facilitates reflection of main-resonance acoustic waves.
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公开(公告)号：US09013247B2
公开(公告)日：2015-04-21
申请号：US13857169
申请日：2013-04-05
发明人： Yuichi Takamine
CPC分类号： H03H7/42 , H03H9/0047 , H03H9/0085 , H03H9/0576 , H03H9/059 , H03H9/1085 , H03H9/14582 , H03H9/6433 , H03H9/725
摘要： In an elastic wave demultiplexer having excellent isolation characteristics, a first ground wiring electrode is connected to a second ground wiring electrode, via first ground via-hole electrodes. The first ground wiring electrode is connected to ground land electrodes via second ground via-hole electrodes. The second ground wiring electrode is connected to a ground terminal via third ground via-hole electrodes. The number of the first ground via-hole electrodes is greater than the number of the second ground via-hole electrodes and the number of the third ground via-hole electrodes.
摘要翻译： 在具有优异的隔离特性的弹性波解复用器中，第一接地布线电极通过第一接地通孔电极连接到第二接地布线电极。 第一接地布线电极经由第二接地通孔电极连接到接地电极。 第二接地线电极通过第三接地通孔电极连接到接地端子。 第一接地通孔电极的数量大于第二接地通孔电极的数量和第三接地通孔电极的数量。
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公开(公告)号：US20070290770A1
公开(公告)日：2007-12-20
申请号：US11729953
申请日：2007-03-30
申请人： Kazuhiro Otsuka , Tsuyoshi Nakai , Hiroyuki Tanaka
发明人： Kazuhiro Otsuka , Tsuyoshi Nakai , Hiroyuki Tanaka
IPC分类号： H03H9/25
CPC分类号： H03H9/0047 , H03H9/0057
摘要： A surface acoustic wave device includes front stage and rear stage surface acoustic wave elements, a signal wiring connecting between the front stage and rear stage surface acoustic wave elements, a reference potential wiring connected with the rear stage surface acoustic wave element and a capacitor made of an insulator interposed between the signal wiring and the reference potential wiring. A surface acoustic wave device includes a front stage surface acoustic wave resonator, a rear stage surface acoustic wave element, a signal wiring connecting between the front stage surface acoustic wave resonator and the rear stage surface acoustic wave element, a reference potential wiring connected with the rear stage surface acoustic wave element and a capacitor made of an insulator interposed between the signal wiring and the reference potential wiring. A communication device includes the surface acoustic wave device described above, a receiver circuit or a transmitter circuit.
摘要翻译： 表面声波装置包括前级和后级表面声波元件，连接在前级和后级声表面波元件之间的信号线，与后级声表面波元件连接的参考电位线和由 介于信号布线和参考电位布线之间的绝缘体。 表面声波装置包括前级表面声波谐振器，后级声表面波元件，连接在前级声表面波谐振器和后级表面声波元件之间的信号线，与 后级表面声波元件和由绝缘体制成的电容器，其插入在信号布线和参考电位布线之间。 通信装置包括上述表面声波装置，接收器电路或发送器电路。
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