公开(公告)号：US07800460B2

公开(公告)日：2010-09-21

申请号：US12242983

申请日：2008-10-01

申请人： Yuichi Takamine ,  Masaru Yata ,  Yasuhisa Fujii

发明人： Yuichi Takamine ,  Masaru Yata ,  Yasuhisa Fujii

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/0071 ,  H03H9/02748 ,  H03H9/14588 ,  H03H9/725

摘要： An elastic wave filter device includes first and second elastic wave filter units connected to an unbalanced terminal. The first and second elastic wave filter units include first to third IDTs and fourth to sixth IDTs, respectively. One end of the first IDT, one end of the second IDT, one end of the fourth IDT, and one end of the sixth IDT are commonly connected together and are connected to the unbalanced terminal. The second IDT and the fifth IDT are each divided into first to third sub-IDT portions in the elastic wave propagation direction, respectively. The second sub-IDT portions of the second and fifth IDTs are connected to first and second balanced terminals, respectively.

摘要翻译： 弹性波滤波器装置包括连接到不平衡端子的第一和第二弹性波滤波器单元。 第一和第二弹性波滤波器单元分别包括第一至第三IDT和第四至第六IDT。 第一IDT的一端，第二IDT的一端，第四IDT的一端和第六IDT的一端共同连接在一起，并连接到不平衡终端。 第二IDT和第五IDT分别在弹性波传播方向上划分成第一至第三子IDT部分。 第二和第五IDT的第二子IDT部分分别连接到第一和第二平衡端子。

公开(公告)号：US06815868B2

公开(公告)日：2004-11-09

申请号：US10118358

申请日：2002-04-09

申请人： Osamu Shibata ,  Yuichi Takamine ,  Hiroki Watanabe ,  Masaru Yata ,  Yoichi Sawada

发明人： Osamu Shibata ,  Yuichi Takamine ,  Hiroki Watanabe ,  Masaru Yata ,  Yoichi Sawada

IPC分类号： H03H925

CPC分类号： H03H9/008 ,  H03H9/0038 ,  H03H9/0042 ,  H03H9/0061 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/02748 ,  H03H9/14517 ,  H03H9/14532 ,  H03H9/14547 ,  H03H9/14576 ,  H03H9/14579 ,  H03H9/14582 ,  H03H9/14585 ,  H03H9/14588 ,  H03H9/14591 ,  H03H9/6436

摘要： A surface acoustic wave apparatus includes three longitudinally-coupled-resonator-type interdigital transducers (IDTs) having a balanced-to-unbalanced conversion function, which are provided on a piezoelectric substrate in a direction in which a surface acoustic wave (SAW) propagates. Weighting is applied to at least one of the IDTs. For example, among the electrode fingers of the IDT located on the left side, an apodization-weighted electrode finger is provided for one of the electrode fingers positioned adjacent to the central IDT.

摘要翻译： 声表面波装置包括三个具有平衡不平衡转换功能的纵向耦合谐振器型叉指式换能器（IDT），它们在表面声波（SAW）传播的方向上设置在压电基片上。 加权被应用于至少一个IDT。 例如，在位于左侧的IDT的电极指中，设置与位于中央IDT相邻的电极指之一的变迹加重电极指。

公开(公告)号：US06710676B2

公开(公告)日：2004-03-23

申请号：US10043133

申请日：2002-01-14

申请人： Masaru Yata ,  Kazunobu Shimoe ,  Yoichi Sawada ,  Hiroki Watanabe ,  Yuichi Takamine

发明人： Masaru Yata ,  Kazunobu Shimoe ,  Yoichi Sawada ,  Hiroki Watanabe ,  Yuichi Takamine

IPC分类号： H03H964

CPC分类号： H03H9/0061 ,  H03H9/0042 ,  H03H9/0071 ,  H03H9/14591

摘要： A surface acoustic wave filter device has a balance-unbalance conversion function and substantially equal input impedance and output impedance so as to increase out-of-passband attenuation. The surface acoustic wave filter device includes an unbalanced signal terminal, first and second balanced signal terminals, and first and second surface acoustic wave filters having input and output impedances. In each filter, one of the input and output impedances is approximately four times the other impedance. Additionally, 2n−1 first surface acoustic wave filters are connected between the unbalanced signal terminal and the first balanced signal terminal, and 2n−1 second surface acoustic wave filters are connected between the unbalanced signal terminal and the second balanced signal terminal, where n is an integer of 1 or more. The second surface acoustic wave filters are 180 degrees out-of-phase with respect to the first surface acoustic wave filters.

摘要翻译： 表面声波滤波器装置具有平衡不平衡转换功能和基本相等的输入阻抗和输出阻抗，以便增加通带衰减。 表面声波滤波器装置包括不平衡信号端子，第一和第二平衡信号端子以及具有输入和输出阻抗的第一和第二声表面波滤波器。 在每个滤波器中，输入和输出阻抗之一约为另一个阻抗的四倍。 另外，2 第一声表面波滤波器连接在不平衡信号端子和第一平衡信号端子之间，并且2 第二声表面波滤波器连接在不平衡信号端子和第二平衡信号端子之间 信号端子，其中n是1或更大的整数。 第二声表面波滤波器相对于第一声表面波滤波器是180度异相。

公开(公告)号：US20070018756A1

公开(公告)日：2007-01-25

申请号：US10568114

申请日：2005-07-12

申请人： Yasuhisa Fujii ,  Yuichi Takamine

发明人： Yasuhisa Fujii ,  Yuichi Takamine

IPC分类号： H03H9/64

CPC分类号： H03H9/0057 ,  H03H9/0061 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/14588

摘要： A surface acoustic wave device includes a substrate, a plurality of terminals including at least an unbalanced terminal and balanced terminals, and at least one of surface acoustic wave element disposed between the unbalanced terminal and the two balanced terminals. Different signal lines connected to the same surface acoustic wave element intersect through insulating films.

摘要翻译： 表面声波装置包括基板，至少包括不平衡端子和平衡端子的多个端子以及设置在不平衡端子和两个平衡端子之间的表面声波元件中的至少一个。 连接到同一声表面波元件的不同信号线通过绝缘膜相交。

公开(公告)号：US06462632B1

公开(公告)日：2002-10-08

申请号：US09557710

申请日：2000-04-25

申请人： Yasuhisa Fujii ,  Yuichi Takamine

发明人： Yasuhisa Fujii ,  Yuichi Takamine

IPC分类号： H03H964

CPC分类号： H03H9/6436 ,  H03H9/14517 ,  H03H9/6483

摘要： A surface acoustic wave resonator includes a piezoelectric substrate and an interdigital transducer on the piezoelectric substrate. The interdigital transducer includes first and second comb-shaped electrodes having one or more electrode fingers which are interdigitated with each other. When the first comb-shaped electrode is connected to a positive potential, the second comb-shaped electrode is connected to a negative potential, and the electrode finger connected to the positive potential and the electrode finger connected to the negative potential are reversed in at least one pair of the electrode fingers in an area where electrode fingers connected to the positive potential and electrode fingers connected to the negative potential are alternately arranged in the direction of surface-wave propagation.

摘要翻译： 表面声波谐振器包括在压电基片上的压电基片和叉指式换能器。 叉指换能器包括具有一个或多个电极指彼此交错的第一和第二梳状电极。 当第一梳状电极连接到正电位时，第二梳状电极连接到负电位，并且连接到正电位的电极指和连接到负电位的电极指至少反转 在连接到正电位的电极指和连接到负电位的电极指的区域中的一对电极指沿着表面波传播的方向交替排列。

公开(公告)号：US07486159B2

公开(公告)日：2009-02-03

申请号：US10568114

申请日：2005-07-12

申请人： Yasuhisa Fujii ,  Yuichi Takamine

发明人： Yasuhisa Fujii ,  Yuichi Takamine

IPC分类号： H03H9/00 ,  H03H9/64 ,  H01L41/04

CPC分类号： H03H9/0057 ,  H03H9/0061 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/14588

摘要： A surface acoustic wave device includes a substrate, a plurality of terminals including at least an unbalanced terminal and balanced terminals, and at least one of surface acoustic wave element disposed between the unbalanced terminal and the two balanced terminals. Different signal lines connected to the same surface acoustic wave element intersect through insulating films.

摘要翻译： 表面声波装置包括基板，至少包括不平衡端子和平衡端子的多个端子以及设置在不平衡端子和两个平衡端子之间的表面声波元件中的至少一个。 连接到同一声表面波元件的不同信号线通过绝缘膜相交。

公开(公告)号：US08736402B2

公开(公告)日：2014-05-27

申请号：US13045587

申请日：2011-03-11

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/64 ,  H03H9/145 ,  H03H9/02 ,  H03H9/00

CPC分类号： H03H9/14582 ,  H03H9/0071 ,  H03H9/02535 ,  H03H9/14535 ,  H03H9/6433

摘要： An elastic wave filter device having improved sharpness of filter characteristics includes a longitudinally-coupled resonator-type elastic wave filter section including first to third IDT electrodes each including a plurality of electrode fingers, and first and second reflectors. The first to third IDT electrodes include narrower-pitch portions provided in end portions thereof, which are each adjacent to another IDT electrode in a direction of propagation of elastic waves, each of the narrower-pitch portions having a smaller period of electrode fingers than a period of electrode fingers in the remaining portion of the relevant IDT electrode. The number of electrode fingers in the narrower-pitch portion of the second IDT electrode, which is disposed on the side closer to the first IDT electrode, and the number of electrode fingers in the narrower-pitch portion of the second IDT electrode, which is disposed on the side closer to the third IDT electrode, differ from each other.

摘要翻译： 具有提高的滤波器特性的清晰度的弹性波滤波器装置包括纵向耦合的谐振器型弹性波滤波器部分，其包括每个包括多个电极指的第一至第三IDT电极以及第一和第二反射器。 第一至第三IDT电极包括设置在其端部的窄节距部分，其在弹性波的传播方向上与另一IDT电极相邻，每个较窄的节距部分具有较小的电极指的周期 在相关IDT电极的剩余部分中的电极指的周期。 设置在靠近第一IDT电极的一侧的第二IDT电极的窄节距部分中的电极指的数量和第二IDT电极的窄节距部分中的电极指的数量 设置在更靠近第三IDT电极的一侧彼此不同。

公开(公告)号：US08305160B2

公开(公告)日：2012-11-06

申请号：US13327961

申请日：2011-12-16

申请人： Ayaka Yamamoto ,  Yuichi Takamine

发明人： Ayaka Yamamoto ,  Yuichi Takamine

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/725 ,  H03H9/0057 ,  H03H9/0085 ,  H03H9/02716 ,  H03H9/02992 ,  H03H9/14573 ,  H03H9/6483

摘要： An elastic wave device includes an unbalanced terminal and first and second balanced terminals. A longitudinally-coupled-resonator-type first elastic wave filter is provided between the unbalanced terminal and the first balanced terminal. An elastic wave filter, which is connected in parallel with the first elastic wave filter, is connected between the unbalanced terminal and the second balanced terminal. The current paths through which IDT electrodes of the elastic wave filters of the elastic wave device are connected to ground terminals, are not symmetrical.

摘要翻译： 弹性波装置包括不平衡端子和第一和第二平衡端子。 在不平衡端子和第一平衡端子之间设置纵向耦合谐振器型第一弹性波滤波器。 与第一弹性波滤波器并联连接的弹性波滤波器连接在不平衡端子和第二平衡端子之间。 弹性波装置的弹性波滤波器的IDT电极与接地端子连接的电流路径不对称。

公开(公告)号：US07876176B2

公开(公告)日：2011-01-25

申请号：US12336563

申请日：2008-12-17

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/008 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/02748 ,  H03H9/725

摘要： An acoustic wave filter device includes first to fourth longitudinally coupled resonator type surface acoustic wave filters that are configured such that the first and second filters are connected to a first balanced signal terminal, the third and fourth filters are connected to a second balanced signal terminal, and a transmission phase of a signal output from the first balanced signal terminal relative to an input signal differs by about 180 degrees with respect to a transmission phase of a signal output from the second balanced signal terminal relative to an input signal. In addition, the number of pairs of electrode fingers of at least one of IDTs of at least one of the first to fourth longitudinally coupled resonator type surface acoustic wave filters is different from the number of pairs of electrode fingers of corresponding IDTs of the remaining first to fourth filters.

摘要翻译： 声波滤波器装置包括第一至第四纵向耦合的谐振器型表面声波滤波器，其被配置为使得第一和第二滤波器连接到第一平衡信号端子，第三和第四滤波器连接到第二平衡信号端子， 相对于从第二平衡信号端子相对于输入信号输出的信号的发送相位，相对于输入信号从第一平衡信号端子输出的信号的发送相位相差大约180度。 此外，第一至第四纵向耦合的谐振器型表面声波滤波器中的至少一个的至少一个IDT的电极指的对数与剩余的第一至第四纵向耦合谐振器型表面声波滤波器的相应IDT的电极指的对数不同 到第四个过滤器。

公开(公告)号：US20050212621A1

公开(公告)日：2005-09-29

申请号：US10521776

申请日：2004-08-19

申请人： Yuichi Takamine

发明人： Yuichi Takamine

IPC分类号： H03H9/00 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/14582 ,  H03H9/0038 ,  H03H9/0057 ,  H03H9/008 ,  H03H9/14588

摘要： In a longitudinally-coupled-resonator surface acoustic wave filter unit having a first interdigital transducer, a central interdigital transducer, a second interdigital transducer, and first and second reflectors arranged such that the interdigital transducers are provided therebetween, for one comb electrode of the central interdigital transducer, first and second comb electrodes, which are substantially symmetrically bisected along a surface-acoustic-wave propagation direction, are provided. Between the first and second comb electrodes, a design parameter of at least one of the interdigital transducers, and the reflectors is set to be different from one another.

摘要翻译： 在具有第一叉指换能器，中央叉指式换能器，第二叉指式换能器以及第一和第二反射器的纵向耦合谐振器表面声波滤波器单元中，所述第一和第二反射器布置成使得叉指换能器设置在其间，用于中心的一个梳电极 提供了沿着表面声波传播方向基本对称地平分的叉指式换能器，第一和第二梳状电极。 在第一梳状电极和第二梳状电极之间，交叉指型传感器和反射器中的至少一个的设计参数被设定为彼此不同。