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1. 发明公开

CN107624221A 级联谐振器有权
公开(公告)号：CN107624221A
公开(公告)日：2018-01-23
申请号：CN201680022232.4
申请日：2016-04-13
申请人：追踪有限公司
发明人：安德烈亚斯·贝格曼
IPC分类号： H03H9/145 , H03H9/64
CPC分类号： H03H9/6489 , H03H9/02724 , H03H9/145 , H03H9/1455 , H03H9/14582 , H03H9/25 , H03H9/6436 , H03H9/6483
摘要：在谐振器中，两个叉指换能器(W1，W2)在由所述谐振器限制的声道之内在纵向方向上并排地通过电气方式串联连接。在两个所述叉指换能器之间形成过渡区域(UEB)，在其中，叉指周期p，其被定义为相邻换能器叉指的叉指中心之间的距离，在所述过渡区域中此在其余叉指换能器区域中更高。

2. 发明公开

CN107404302A 具有用于抑制假信号响应的吸收层的复合表面声波SAW装置有权转让
公开(公告)号：CN107404302A
公开(公告)日：2017-11-28
申请号：CN201710256865.8
申请日：2017-04-19
申请人：安华高科技通用IP(新加坡)公司
发明人：达里乌斯·布拉卡 , 苏雷什·斯里达朗 , 斯蒂芬·罗伊·吉尔伯特 , 理查德·C·鲁比
IPC分类号： H03H9/02 , H03H9/145
CPC分类号： H03H9/64 , H01L41/047 , H01L41/107 , H03H9/02551 , H03H9/02559 , H03H9/02574 , H03H9/02866 , H03H9/25 , H03H9/02661 , H03H9/02724 , H03H9/02834 , H03H9/14544
摘要：本发明涉及具有用于抑制假信号响应的吸收层的复合表面声波SAW装置。所述SAW装置包含：基底衬底；压电材料层；至少一个叉指电极对，其安置于所述压电材料层上；及声波抑制层，其安置于所述压电材料层与所述基底衬底之间，所述声波抑制层经配置以抑制在从所述压电材料层到所述基底衬底的方向上传播的声波。

3. 发明公开

CN1845455A 弹性表面波滤波器无效
公开(公告)号：CN1845455A
公开(公告)日：2006-10-11
申请号：CN200610072570.7
申请日：2006-04-07
申请人：爱普生拓优科梦株式会社
发明人：高桥直树
IPC分类号： H03H9/64
CPC分类号： H03H9/6496 , H03H9/02724 , H03H9/14597 , H03H9/6426 , H03H9/6469
摘要：本发明的课题在于得到实现窄带纵向耦合1次－3次双模SAW滤波器的小型化的技术。在将2个纵向耦合1次－3次双模SAW滤波器级联构成的级联连接型双模SAW滤波器中，所述纵向耦合1次－3次双模SAW滤波器通过在压电基板上沿表面波的传播方向接近地配置3个IDT电极，并在该3个IDT电极的两侧配置光栅反射器而成，从上述配置于外侧的IDT电极中相间去除掉至少一对电极指，然后配置浮置电极，构成窄带弹性表面波滤波器。

4. 发明授权

US11888461B2 Acoustic wave device, acoustic wave filter, and composite filter device 有权
公开(公告)号：US11888461B2
公开(公告)日：2024-01-30
申请号：US17183431
申请日：2021-02-24
申请人： Murata Manufacturing Co., Ltd.
发明人： Ryo Nakagawa , Hideki Iwamoto
IPC分类号： H03H9/02 , H03H9/25
CPC分类号： H03H9/02559 , H03H9/02574 , H03H9/02724 , H03H9/25
摘要： An acoustic wave device includes a silicon oxide film, a lithium tantalate film, an IDT electrode, and a protection film that are laminated on a support substrate made of silicon. A wavelength normalized film thickness of a lithium tantalate film is denoted by TLT, an Euler angle is θLT, a wavelength normalized film thickness of the silicon oxide film is TS, a wavelength normalized film thickness of the IDT electrode in terms of aluminum thickness is TE, a wavelength normalized film thickness of a protection film is TP, a propagation direction in the support substrate is ψSi, and a wavelength normalized film thickness of the support substrate is TSi. Values of TLT, θLT, TS, TE, TP, and ψSi are set such that Ih corresponding to an intensity of a response of a spurious response represented by Formula (1) is greater than about −2.4 in a spurious response.

5. 发明授权

US5434466A Acoustic wave filter with reduced bulk-wave scattering loss and method 失效
标题翻译：具有减小体波散射损失的声波滤波器和方法
公开(公告)号：US5434466A
公开(公告)日：1995-07-18
申请号：US251159
申请日：1994-05-31
申请人： Thomas S. Hickernell , David Penunuri
发明人： Thomas S. Hickernell , David Penunuri
IPC分类号： H03H9/02 , H03H9/64 , H01L41/08
CPC分类号： H03H9/02724 , H03H9/02866 , H03H9/6479 , H03H9/6483
摘要： An acoustic wave filter with reduced bulk-wave scattering loss has a center frequency and an associated acoustic wavelength. The filter includes a substrate and a first reflector having a first group of periodically disposed reflective elements. The filter includes a first transducer on a first side of the first reflector. The filter also includes a first gap having a first width, located between the first reflector and the first transducer. The first width exceeds one-fourth of the acoustic wavelength. The filter includes a second reflector and a second gap disposed between the first transducer and the second reflector. The second gap has a second breadth exceeding one-fourth of the acoustic wavelength. A first waveguiding element is positioned within the first gap and having a first breadth. The first width exceeds the first breadth.
摘要翻译：具有减小的体波散射损失的声波滤波器具有中心频率和相关的声波长。滤光器包括基板和具有第一组周期性布置的反射元件的第一反射器。滤波器包括在第一反射器的第一侧上的第一换能器。滤波器还包括位于第一反射器和第一换能器之间的具有第一宽度的第一间隙。第一宽度超过声波长的四分之一。该过滤器包括第二反射器和设置在第一换能器和第二反射器之间的第二间隙。第二间隙具有超过声波长四分之一的第二宽度。第一波导元件位于第一间隙内并且具有第一宽度。第一个宽度超过第一个宽度。

6. 发明授权

US5818310A Series-block and line-width weighted saw filter device 失效
标题翻译：系列块和线宽加权锯式过滤装置
公开(公告)号：US5818310A
公开(公告)日：1998-10-06
申请号：US703671
申请日：1996-08-27
申请人： Leland P. Solie
发明人： Leland P. Solie
IPC分类号： H03H9/145 , H03H9/64
CPC分类号： H03H9/14505 , H03H9/02724 , H03H9/0274 , H03H9/14517 , H03H9/14558 , H03H9/6426 , H03H9/14526 , H03H9/14547 , H03H9/14552
摘要： Surface acoustic wave (SAW) filter performance is enhanced using series-block weighting and line-width weighting combined for providing a transducer having a finely adjusted uniform weighting across the beam profile. Such a transducer permits practical transducer pairing within a surface acoustic wave filter, as well as use with transducers requiring uniform weighting, such as transducers employing apodized weighting. A three electrode per wavelength transducer electrode finger geometry includes line-width weighting for providing a fine weighting control to complement the inherently coarse weighting control of the series-block weighted transducer. Selected transducer geometries including three electrode per wavelength structures are employed for use in wide band tapered electrode finger SAW devices.
摘要翻译：使用串联块加权和线宽加权组合来提高表面声波（SAW）滤波器性能，以提供具有经过光束轮廓的精细调整的均匀加权的换能器。这种传感器允许表面声波滤波器内的实际的换能器配对，以及使用需要均匀加权的换能器，例如采用变迹加权的换能器。每个波长换能器电极指几何形状的三个电极包括线宽加权，用于提供精细加权控制以补充串联块加权换能器的固有粗加权控制。所选择的换能器几何形状包括每个波长结构的三个电极用于宽带锥形电极指SAW器件中。

7. 发明授权

US5600287A Acoustic wave filter with reduced bulk-wave scattering loss, ladder filter incorporating same and method 失效
标题翻译：具有减小体波散射损失的滤波器，结合相同的梯形滤波器和方法
公开(公告)号：US5600287A
公开(公告)日：1997-02-04
申请号：US451827
申请日：1995-05-26
申请人： Philip P. Kwan , Thomas S. Hickernell , David Penunuri
发明人： Philip P. Kwan , Thomas S. Hickernell , David Penunuri
IPC分类号： H03H9/02 , H03H9/64
CPC分类号： H03H9/02724 , H03H9/02866 , H03H9/6479 , H03H9/6483
摘要： A method and apparatus for an acoustic wave filter (110) with reduced bulk-wave scattering loss and a ladder filter (30, 40) incorporating same. The method includes steps of providing an acoustic wave propagating substrate (111) and disposing a first reflector (112) on a first surface thereof. The method also includes disposing a first transducer (115) to a first side of the first reflector (112). The first transducer (115) is separated from the first reflector (112) by a first gap (118) having a first width (114) exceeding one-fourth of the acoustic wavelength. The method also includes disposing a second reflector (112') to a side of the first transducer (115) opposite the first reflector (112). The first (112) and second (112') reflectors each include a group of periodically disposed reflective elements (113, 113'). The second reflector (112') is separated from the first transducer (115) by a second gap (140) having a second width (139). The method also includes disposing a first waveguiding element (116) having a first breadth (117) within the first gap (118).
摘要翻译：一种具有减小的体波散射损失的声波滤波器（110）的方法和装置，以及包括其的梯形滤波器（30,40）。该方法包括以下步骤：提供声波传播基片（111）并在其第一表面上设置第一反射器（112）。该方法还包括将第一换能器（115）设置到第一反射器（112）的第一侧。第一传感器（115）通过具有超过声波长四分之一的第一宽度（114）的第一间隙（118）与第一反射器（112）分离。该方法还包括将第二反射器（112'）设置在与第一反射器（112）相对的第一换能器（115）侧。第一（112）和第二（112'）反射器各自包括一组周期性布置的反射元件（113,113'）。第二反射器（112'）通过具有第二宽度（139）的第二间隙（140）与第一换能器（115）分离。该方法还包括在第一间隙（118）内布置具有第一宽度（117）的第一波导元件（116）。

8. 发明公开

EP1710910A2 Surface acoustic wave filter 审中-公开
标题翻译： Oberflächenwellenfilter
公开(公告)号：EP1710910A2
公开(公告)日：2006-10-11
申请号：EP06007380.6
申请日：2006-04-07
申请人： Epson Toyocom Corporation
发明人： Takahashi, Naoki
IPC分类号： H03H9/02 , H03H9/64
CPC分类号： H03H9/6496 , H03H9/02724 , H03H9/14597 , H03H9/6426 , H03H9/6469
摘要： A surface acoustic wave filter (cascaded dual mode SAW filter) includes three IDT electrodes (2,3,4),(2',3',4') disposed adjacent to each other along the propagation direction of a surface wave on a piezoelectric substrate (1) and two primary-tertiary longitudinally-coupled dual mode SAW fliers (F1;F2) cascaded and constructed by arranging grating reflectors (5a,5b,5a',5b') on both sides of three IDT electrodes. At least a pair of electrode fingers (α,β,γ) are removed from the IDT electrodes disposed outside, and floating electrodes are then disposed to replace the removed electrodes.
摘要翻译：表面声波滤波器（级联双模式SAW滤波器）包括沿着压电元件的表面波的传播方向彼此相邻布置的三个IDT电极（2,3,4），（2'，3'，4'）基板（1）和通过在三个IDT电极的两侧布置光栅反射器（5a，5b，5a'，5b'）而级联和构造的两个第一三次纵向耦合的双模式SAW模式（F1; F2）。从设置在外部的IDT电极中去除至少一对电极指（±，2，3），然后布置浮置电极以取代去除的电极。

9. 发明申请

US20100201458A1 Surface acoustic wave element, method of producing the same, and method of changing resonation frequency of the same 失效
标题翻译：表面声波元件及其制造方法以及改变其谐振频率的方法
公开(公告)号：US20100201458A1
公开(公告)日：2010-08-12
申请号：US12656523
申请日：2010-02-02
申请人： Kazuki Arakawa , Kazuhiko Kano , Shingo Jinno
发明人： Kazuki Arakawa , Kazuhiko Kano , Shingo Jinno
IPC分类号： H03H9/02
CPC分类号： H03H9/02645 , H03H9/02685 , H03H9/02708 , H03H9/02724 , H03H9/02748 , H03H9/02803
摘要： A surface acoustic wave element includes a piezoelectric member, a comb-teeth electrode, and a reflector. The comb-teeth electrode is arranged on the piezoelectric member. The reflector is arranged on the piezoelectric member. The reflector reflects a surface acoustic wave transmitted from the comb-teeth electrode. The reflector has a plurality of areas, and each of the areas has a frequency to make a reflection efficiency the largest. At least two of the frequencies of the areas are made different from each other.
摘要翻译：表面声波元件包括压电元件，梳齿电极和反射器。梳齿电极配置在压电元件上。反射器设置在压电元件上。反射器反射从梳齿电极传播的表面声波。反射器具有多个区域，并且每个区域具有使反射效率最大的频率。这些区域的至少两个频率彼此不同。

10. 发明授权

US07518471B2 Surface acoustic wave filter utilizing a floating electrode 失效
标题翻译：利用浮动电极的表面声波滤波器
公开(公告)号：US07518471B2
公开(公告)日：2009-04-14
申请号：US11398661
申请日：2006-04-06
申请人： Naoki Takahashi
发明人： Naoki Takahashi
IPC分类号： H03H9/64 , H03H9/145
CPC分类号： H03H9/6496 , H03H9/02724 , H03H9/14597 , H03H9/6426 , H03H9/6469
摘要： A surface acoustic wave filter (cascaded dual mode SAW filter) includes three IDT electrodes disposed adjacent to each other along the propagation direction of a surface wave on a piezoelectric substrate and two primary-tertiary longitudinally-coupled dual mode SAW filters cascaded and constructed by arranging grating reflectors on both sides of three IDT electrodes. At least a pair of electrode fingers are thinned out from the IDT electrodes disposed outside, and floating electrodes are then disposed.
摘要翻译：表面声波滤波器（级联双模式SAW滤波器）包括沿着压电基板上的表面波的传播方向彼此相邻设置的三个IDT电极和通过布置来构建的两个第一三次纵向耦合双模SAW滤波器三个IDT电极两侧的光栅反射器。至少一对电极指从设置在外部的IDT电极变薄，然后布置浮动电极。

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