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1. 发明申请

US20180254765A1 ELASTIC WAVE DEVICE 审中-公开
公开(公告)号：US20180254765A1
公开(公告)日：2018-09-06
申请号：US15973562
申请日：2018-05-08
申请人： Murata Manufacturing Co., Ltd.
发明人： Kenji INATE
IPC分类号： H03H9/64 , H03H9/02 , H03H9/145 , H03H9/25 , H03H9/72
CPC分类号： H03H9/6496 , H01L41/0477 , H03H9/02559 , H03H9/02645 , H03H9/02685 , H03H9/02795 , H03H9/02818 , H03H9/14552 , H03H9/25 , H03H9/6483 , H03H9/725
摘要： An elastic wave device includes a piezoelectric substrate, a first elastic wave element on the piezoelectric substrate and including at least one first interdigital transducer electrode and a first reflector in an area of the first interdigital transducer electrode at one side in a propagation direction of elastic waves, and a second elastic wave element on the piezoelectric substrate and including at least one second interdigital transducer electrode and a second reflector in an area of the second interdigital transducer electrode at one side in the propagation direction of elastic waves. The first and second reflectors are disposed side by side in the propagation direction. A reflection member, between the first and second reflectors, reflects elastic waves in at least a direction different from the propagation direction.

2. 发明申请

US20180102755A1 ELASTIC WAVE FILTER DEVICE 审中-公开
公开(公告)号：US20180102755A1
公开(公告)日：2018-04-12
申请号：US15830018
申请日：2017-12-04
申请人： Murata Manufacturing Co., Ltd.
发明人： Yuichi TAKAMINE
IPC分类号： H03H9/02 , H03H9/56 , H03H9/13 , H01L41/18 , H01L41/08
CPC分类号： H03H9/02086 , H01L41/0805 , H01L41/18 , H03H9/02574 , H03H9/13 , H03H9/14594 , H03H9/568 , H03H9/6436 , H03H9/6483 , H03H9/6496 , H03H9/725
摘要： An elastic wave filter device includes a piezoelectric film, a high acoustic velocity support substrate in which an acoustic velocity of a propagating bulk wave is larger than an acoustic velocity of a main mode elastic wave propagating in the piezoelectric film, and IDT electrodes in contact with the piezoelectric film. A serial arm resonator and a parallel arm resonator are defined by the IDT electrodes such that, a direction in which tips of first and second electrode fingers are connected defines a tilt angle with respect to a propagation direction of elastic waves excited by the IDT electrodes. A tilt angle of the serial arm resonator is different from a tilt angle of the parallel arm resonator.

3. 发明授权

US09231556B2 Acoustic wave filter having reduced non-linearities, and method for production 有权
标题翻译：具有减小的非线性的声波滤波器及其制造方法
公开(公告)号：US09231556B2
公开(公告)日：2016-01-05
申请号：US13876474
申请日：2011-08-25
申请人： Edgar Schmidhammer
发明人： Edgar Schmidhammer
IPC分类号： H03H9/00 , H03H9/64 , H03H9/145 , H03H9/72
CPC分类号： H03H9/64 , H03H9/14517 , H03H9/1452 , H03H9/14597 , H03H9/6483 , H03H9/6496 , H03H9/725
摘要： An acoustic wave filter having reduced non-linearities as well as a production method are disclosed. A filter comprises a first electroacoustic transducer having a first metallization ratio and a second electroacoustic transducer having a second metallization ratio. The metallization ratios range from 0.2 to 0.8, and the metallization ratio of the first transducer is no more than 0.8 times the metallization ratio of the second transducer.
摘要翻译：公开了具有减小的非线性的声波滤波器以及制造方法。滤波器包括具有第一金属化率的第一电声换能器和具有第二金属化比率的第二电声换能器。金属化率范围为0.2至0.8，第一换能器的金属化率不超过第二换能器的金属化率的0.8倍。

4. 发明授权

US08698578B2 Acoustic wave resonator and duplexer using same 有权
标题翻译：声波谐振器和双工器使用相同
公开(公告)号：US08698578B2
公开(公告)日：2014-04-15
申请号：US13319140
申请日：2010-05-24
申请人： Hidekazu Nakanishi , Hiroyuki Nakamura , Tetsuya Tsurunari , Rei Goto , Joji Fujiwara
发明人： Hidekazu Nakanishi , Hiroyuki Nakamura , Tetsuya Tsurunari , Rei Goto , Joji Fujiwara
IPC分类号： H03H9/00 , H03H9/64
CPC分类号： H03H9/6496 , H03H9/02559 , H03H9/02834 , H03H9/02858 , H03H9/02984 , H03H9/02992 , H03H9/1452 , H03H9/14526 , H03H9/1457 , H03H9/725
摘要： An acoustic wave resonator includes a piezoelectric body, an IDT electrode for exciting an acoustic wave with wavelength λ, and a dielectric thin film provided so as to cover the IDT electrode. The IDT electrode includes a bus bar electrode region, a dummy electrode region, and an IDT cross region in order from outside. The film thickness of the dielectric thin film above at least one of the bus bar electrode region and the dummy electrode region is smaller than that above the IDT cross region by 0.1λ to 0.25λ. This configuration provides an acoustic wave resonator that reduces transverse-mode spurious emission.
摘要翻译：声波谐振器包括压电体，用于激发波长为λ的声波的IDT电极和设置成覆盖IDT电极的电介质薄膜。 IDT电极从外部依次包括汇流条电极区域，虚拟电极区域和IDT交叉区域。汇流条电极区域和虚拟电极区域中的至少一个之上的电介质薄膜的膜厚小于IDT横截面上的0.1λ至0.25λ的厚度。该配置提供了减少横向杂散发射的声波谐振器。

5. 发明申请

US20100194496A1 ELASTIC WAVE RESONATOR, ELASTIC WAVE FILTER, AND ANTENNA SHARING DEVICE USING THE SAME 有权
标题翻译：弹性波共振器，弹性波滤波器，以及使用其的天线共享装置
公开(公告)号：US20100194496A1
公开(公告)日：2010-08-05
申请号：US12757475
申请日：2010-04-09
申请人： Rei Goto , Yosuke Hamaoka , Hiroyuki Nakamura , Tetsuya Tsurunari , Joji Fujiwara
发明人： Rei Goto , Yosuke Hamaoka , Hiroyuki Nakamura , Tetsuya Tsurunari , Joji Fujiwara
IPC分类号： H01P5/12 , H03H9/17
CPC分类号： H03H9/6483 , H03H9/0071 , H03H9/02944 , H03H9/6496
摘要： An acoustic wave resonance device includes: piezoelectric substrate (1), first acoustic wave resonator (100) provided on an upper surface of piezoelectric substrate (1) and including first interdigital transducer electrode (110), and second acoustic wave resonator (200) provided on piezoelectric substrate (1) and including second interdigital transducer electrode (210). First acoustic wave resonator (100) and second acoustic wave resonator (200) are connected to each other. An overlap width of a plurality of first comb-shaped electrodes (112) forming first acoustic wave resonator (100) is larger than an overlap width of a plurality of second comb-shaped electrodes (212) forming second acoustic wave resonator (200). With such a configuration, frequencies in which a transverse mode spurious response is generated can be distributed and loss can be reduced.
摘要翻译：声波共振装置包括：压电基板（1），设置在压电基板（1）的上表面上并包括第一叉指式换能器电极（110）的第一声波谐振器（100）和设置在第二声波谐振器在压电基板（1）上并且包括第二叉指式换能器电极（210）。第一声波谐振器（100）和第二声波谐振器（200）彼此连接。形成第一声波谐振器（100）的多个第一梳状电极（112）的重叠宽度大于形成第二声波谐振器（200）的多个第二梳状电极（212）的重叠宽度。通过这样的配置，可以分配产生横向模式杂散响应的频率，并且可以减少损耗。

6. 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。

7. 发明申请

US20040140866A1 Ladder filter, branching filter, and communication apparatus 有权
标题翻译：梯形滤波器，分路滤波器和通信装置
公开(公告)号：US20040140866A1
公开(公告)日：2004-07-22
申请号：US10735744
申请日：2003-12-16
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/70 , H03H009/56 , H03H009/64
CPC分类号： H03H9/6483 , H03H9/564 , H03H9/568 , H03H9/605 , H03H9/6496
摘要： A ladder filter includes series arm resonators and parallel arm resonators which are alternately connected to each other. The series arm resonators include a first series arm resonator connected in parallel with an inductor and a second series arm resonator not connected to the inductor. The ladder filter satisfies the relationship of fsr1
摘要翻译：梯形滤波器包括交替地彼此连接的串联臂谐振器和并联臂谐振器。串联臂谐振器包括与电感器并联连接的第一串联臂谐振器和未连接到电感器的第二串联臂谐振器。梯形滤波器满足fsr1

8. 发明申请

US20030071540A1 Surface acoustic wave device and communication device 失效
标题翻译：声表面波装置及通讯装置
公开(公告)号：US20030071540A1
公开(公告)日：2003-04-17
申请号：US10255968
申请日：2002-09-27
发明人： Yoshihiro Ito , Michio Kadota , Koji Fujimoto
IPC分类号： H03H009/25
CPC分类号： H03H9/14552 , H03H9/02543 , H03H9/6496
摘要： A Shear Horizontal-type end-surface-reflection-type surface acoustic wave device includes a piezoelectric substrate having end surfaces. The most appropriate positions of the end surfaces of the piezoelectric substrate are determined. Interdigital transducers are disposed on the main surface of the piezoelectric substrate having a comparatively low relative dielectric constant null11T (for example, a relative dielectric constant of about 40 or less). The positions of the end surfaces are determined so that the distance from the center of the second electrode finger, counting from the outermost side in the surface acoustic wave propagation direction among the interdigital transducers, to the end surfaces (end surfaces for reflecting the surface acoustic wave) of the piezoelectric substrate satisfy the relationship (Nnullnull)nullsnullLnull(Nnullnull)nulls, where nulls is the wavelength of the surface acoustic wave, and N is 0 or a positive integer.
摘要翻译：剪切水平型端面反射型表面声波装置包括具有端面的压电基板。确定压电基片的端面最合适的位置。交叉换能器设置在压电基片的主表面上，其相对介电常数相对较低，为11T（例如约40以下的相对介电常数）。端面的位置被确定为使得从叉指式换能器之间的表面声波传播方向上的最外侧的第二电极指的中心到端面（用于反射表面声学的端面）（N +⅝）l ds <<<<。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

9. 发明授权

US4609891A Staggered SAW resonator for differential detection 失效
标题翻译：用于差分检测的交错SAW谐振器
公开(公告)号：US4609891A
公开(公告)日：1986-09-02
申请号：US788196
申请日：1985-10-16
申请人： Leland P. Solie , Hans P. Fredricksen
发明人： Leland P. Solie , Hans P. Fredricksen
IPC分类号： H03H9/25 , H03H3/08 , H03H9/02 , H03H9/64
CPC分类号： H03H9/02685 , H03H9/6433 , H03H9/6453 , H03H9/6496
摘要： A surface acoustical wave (SAW) filter is provided by placing at least one pair resonator channels consisting of reflectors and input and output transducers on the surface of a suitable substrate, such as a piezo-electric crystal. One channel of the pair consists of an input transducer and an output transducer which are aligned in a path along which the SAW progresses. The two channels are identical except that the separation distance between the transducers and the reflectors, in one channel is slightly different than the corresponding distance in the other channel. This separation difference serves to broaden the passband for applications which require a broader passband than is obtainable with a single channel resonator filter. Differential detection of the SAW in one section with respect to the other channel is achieved by using a symetrically inverted output transducer, in one embodiment. In another embodiment an offset transducer is used to accomplish the differential sensing.
摘要翻译：通过将由反射器和输入和输出换能器组成的至少一对谐振器通道放置在诸如压电晶体的合适衬底的表面上来提供表面声波（SAW）滤波器。该对中的一个通道包括输入换能器和输出换能器，其在SAW进入的路径中对准。两个通道是相同的，除了在一个通道中的换能器和反射器之间的间隔距离稍微不同于另一个通道中的相应距离。该分离差异用于扩展需要比单通道谐振滤波器可获得的通带宽的应用的通带。在一个实施例中，通过使用对称反转的输出换能器来实现在一个部分中相对于另一个通道的SAW的差分检测。在另一个实施例中，使用偏移换能器来完成微分感测。

10. 发明授权

US4420730A Surface acoustic wave filter 失效
标题翻译：表面声波滤波器
公开(公告)号：US4420730A
公开(公告)日：1983-12-13
申请号：US314430
申请日：1981-10-23
申请人： Noboru Wakatsuki , Yuji Kojima , Masaaki Ono
发明人： Noboru Wakatsuki , Yuji Kojima , Masaaki Ono
IPC分类号： H03H3/08 , H03H9/02 , H03H9/145 , H03H9/25 , H03H9/64 , H03H9/72 , H03H9/76 , H03H9/70
CPC分类号： H03H9/76 , H03H9/02795 , H03H9/1452 , H03H9/1455 , H03H9/14573 , H03H9/6479 , H03H9/6496 , H03H9/72 , H03H9/02992 , H03H9/14547
摘要： A surface acoustic wave filter which comprises: a substrate of piezoelectric material; a multistrip coupler for changing the track of a signal comprising a plurality of parallel conductive strips; at least two transducers disposed on one side of the multistrip coupler; at least another two transducers disposed on the other side of the multistrip coupler. The latter two transducers facing the former two transducers. One pair of the transducers which face each other through the multistrip coupler constitutes input transducers while the other pair of the transducers constitutes output transducers.
摘要翻译：一种表面声波滤波器，包括：压电材料的基板; 用于改变包括多个平行导电条的信号的轨迹的多段耦合器; 至少两个换能器设置在所述多段耦合器的一侧上; 至少另外两个换能器设置在多段耦合器的另一侧上。后两个传感器面对前两个传感器。通过多段耦合器彼此面对的一对换能器构成输入换能器，而另一对换能器构成输出换能器。

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