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公开(公告)号：US11451210B2
公开(公告)日：2022-09-20
申请号：US16214968
申请日：2018-12-10
发明人： Masafumi Iwaki , Yoshio Satoh
摘要： An acoustic wave device includes: a Y-cut X-propagation lithium tantalate substrate having a cut angle of 5° or greater and 18° or less; and a grating electrode that is formed of one or more metal films stacked on the lithium tantalate substrate, a number of the one or more metal films being n (n is a natural number), excites an acoustic wave, and meets a condition: 0.16 λ ≤ ∑ i = 1 n ( hi × ρ i ρ 0 ) ≤ 0.24 λ where ρi represents a density of each metal film of the one or more metal films, hi represents a film thickness of the each metal film, ρ0 represents a density of Mo, and λ represents a pitch.
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公开(公告)号：US10700662B2
公开(公告)日：2020-06-30
申请号：US16198284
申请日：2018-11-21
发明人： Shinpei Miura , Satoshi Imasu , Takashi Matsuda , Masafumi Iwaki
摘要： An acoustic wave device includes: a piezoelectric substrate; and a pair of comb-shaped electrodes that is located on the piezoelectric substrate, includes a metal film, and excites a surface acoustic wave, the metal film being mainly composed of a metal having a melting point equal to or higher than a melting point of Pt, the metal film having a first region in which a crystal grain has a columnar shape and a second region that is located on and/or under the first region in a stacking direction and has less crystallinity than the first region or has an amorphous structure.
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公开(公告)号：US10483944B2
公开(公告)日：2019-11-19
申请号：US15634893
申请日：2017-06-27
摘要： A multiplexer includes: a first filter including a series resonator connected in series and a parallel resonator connected in parallel between a common terminal and a first terminal, each of the series resonator and the parallel resonator including an IDT located on a piezoelectric substrate, first and second regions being alternately located in an extension direction of electrode fingers, which excite an acoustic wave, within an overlap region of the IDT in which the electrode fingers overlap, a width of at least one of the electrode fingers in the second region being greater than that in the first region, one or some resonators of the parallel resonator and the series resonator having a larger number of the second regions than a remaining resonator; and a second filter connected between the common terminal and a second terminal and having a passband higher than a passband of the first filter.
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公开(公告)号：US09559661B2
公开(公告)日：2017-01-31
申请号：US14941324
申请日：2015-11-13
发明人： Shogo Inoue , Masafumi Iwaki , Jun Tsutsumi
CPC分类号： H03H9/54 , H03H9/6433 , H03H9/70 , H03H9/706 , H03H9/725
摘要： A duplexer includes: a transmit filter that is connected between an antenna terminal and a transmit terminal and has a plurality of acoustic wave resonators; a receive filter that is connected between the antenna terminal and a receive terminal and has a plurality of acoustic wave resonators; and a delay line or a longitudinal coupling type resonator that is connected in parallel with at least one of the plurality of acoustic wave resonators of the transmit filter and the plurality of acoustic wave resonators of the receive filter and has at least two IDTs (Interdigital Transducers).
摘要翻译： 双工器包括：发射滤波器，其连接在天线端子和发射端子之间，并具有多个声波谐振器; 连接在天线端子和接收端子之间并具有多个声波谐振器的接收滤波器; 以及与发射滤波器的多个声波谐振器和接收滤波器的多个声波谐振器中的至少一个并联连接的延迟线或纵向耦合型谐振器，并且具有至少两个IDT（互指数转换器 ）。
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公开(公告)号：US09397634B2
公开(公告)日：2016-07-19
申请号：US14142063
申请日：2013-12-27
发明人： Motoaki Hara , Shogo Inoue , Masafumi Iwaki , Jun Tsutsumi , Masanori Ueda
CPC分类号： H03H9/542 , H03H9/009 , H03H9/0095 , H03H9/46 , H03H9/605 , H03H9/64 , H03H9/6483 , H03H9/706 , H03H9/725
摘要： In a filter, two parallel resonators that are adjacent to each other are connected, in parallel, to a first portion of the signal line that connects a pair of two adjacent series resonators, at least one parallel resonator is connected, in parallel, to a second portion of the signal line that connects a different pair of two adjacent series resonators, a first inductor is connected to one parallel resonator of said two parallel resonators in series, a second inductor is connected to one parallel resonator of said at least one parallel resonator in series, a third inductor is connected to said two parallel resonators and said at least one parallel resonator, the first and third inductors' total inductance is different from the second and third inductor's total inductance.
摘要翻译： 在滤波器中，彼此相邻的两个并联谐振器并联连接到连接一对两个相邻串联谐振器的信号线的第一部分，至少一个并联谐振器并联连接到 连接不同对的两个相邻串联谐振器的信号线的第二部分，第一电感器串联连接到所述两个并联谐振器的一个并联谐振器，第二电感器连接到所述至少一个并联谐振器的一个并联谐振器 串联地，第三电感器连接到所述两个并联谐振器和所述至少一个并联谐振器，第一和第三电感器的总电感不同于第二和第三电感器的总电感。
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公开(公告)号：US09203377B2
公开(公告)日：2015-12-01
申请号：US13759385
申请日：2013-02-05
发明人： Motoaki Hara , Shogo Inoue , Masafumi Iwaki , Jun Tsutsumi
CPC分类号： H03H9/70 , H03H9/02015 , H03H9/132 , H03H9/173 , H03H9/175 , H03H9/605 , H03H9/706 , H04B1/0057
摘要： A duplexer includes: a first filter of which first and second ends connect to a common terminal and a first terminal respectively; and a second filter having a passband higher than that of the first filter, a first end and second end thereof connecting to the common terminal and a second terminal respectively, wherein a phase shifter is located neither between the first filter and the common terminal nor between the second filter and the common terminal, the second filter is a ladder-type filter including piezoelectric thin film resonators connected in a ladder shape, a propagation constant in a direction perpendicular to a thickness direction of a piezoelectric thin film in the piezoelectric thin film resonator is a real number at frequencies lower than a resonance frequency of the piezoelectric thin film resonator, and a resonator at a first stage is a parallel resonator in the second filter.
摘要翻译： 双工器包括：第一和第二端分别连接到公共端子和第一端子的第一滤波器; 以及第二滤波器，其通带高于第一滤波器的通带，其第一端和第二端分别连接到公共端子和第二端子，其中移相器既不位于第一滤波器和公共端子之间，也不位于 第二滤波器和公共端子，第二滤波器是梯形滤波器，包括梯形连接的压电薄膜谐振器，与压电薄膜谐振器中的压电薄膜的厚度方向垂直的方向的传播常数 是低于压电薄膜谐振器的谐振频率的实数，第一级的谐振器是第二滤波器中的并联谐振器。
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公开(公告)号：US10461718B2
公开(公告)日：2019-10-29
申请号：US15416263
申请日：2017-01-26
摘要： An acoustic wave resonator includes: a piezoelectric substrate; and an IDT that is located on the piezoelectric substrate and includes first regions and second regions alternately arranged in an extension direction of electrode fingers, which excite an acoustic wave, in an overlap region in which the electrode fingers overlap, at least one electrode finger of the electrode fingers in the second regions having a different width from the at least one electrode finger in the first regions, a width of an outer second region of the second regions in the extension direction differs from a width of an inner second region of the second regions.
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公开(公告)号：US09270263B2
公开(公告)日：2016-02-23
申请号：US14301051
申请日：2014-06-10
发明人： Masafumi Iwaki
IPC分类号： H03K17/687 , H03K17/16 , H03K17/693 , H04B1/48 , H03K17/06
CPC分类号： H03K17/16 , H03K17/693 , H03K2017/066 , H04B1/48
摘要： A switching device includes: a switch that selects and connects one of at least three terminals including a first terminal, a second terminal, and a third terminal to a common terminal; and a compensating circuit that shifts a phase of at least one of a first signal transmitted through the second terminal and a second signal transmitted through the third terminal so that the first signal and the second signal compensate each other and unifies and outputs the first signal and the second signal to a fourth terminal as a third signal, or that branches a third signal input to the fourth terminal into the first signal and the second signal.
摘要翻译： 开关装置包括：开关，其将包括第一端子，第二端子和第三端子的至少三个端子中的一个端子选择并连接到公共端子; 以及补偿电路，其移位通过第二端子发送的第一信号和通过第三端子发送的第二信号中的至少一个的相位，使得第一信号和第二信号彼此补偿，并且统一并输出第一信号，以及 将第二信号作为第三信号输出到第四端子，或者将输入到第四端子的第三信号分支为第一信号和第二信号。
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公开(公告)号：US09148119B2
公开(公告)日：2015-09-29
申请号：US13662973
申请日：2012-10-29
发明人： Masafumi Iwaki , Shogo Inoue
CPC分类号： H03H9/14594 , H03H9/542 , H03H9/6436 , H03H9/6483 , H03H9/706 , H03H9/725
摘要： A filter includes: first series resonators and first parallel resonators that are connected in a ladder shape between an input terminal and an output terminal; a first inductor that is connected in parallel to at least one first series resonator; one or more second parallel resonators that are provided separately from the first parallel resonators, are connected between the input terminal and the output terminal, and have a resonance frequency and an anti-resonance frequency at frequencies lower than a passband formed by the first series resonators and the first parallel resonators; wherein an attenuation region is formed by a first attenuation pole formed by the at least one first series resonator and the first inductor and a second attenuation pole formed by a resonant response of the one or more second parallel resonators.
摘要翻译： 滤波器包括：在输入端子和输出端子之间以梯形形式连接的第一串联谐振器和第一并联谐振器; 与至少一个第一串联谐振器并联连接的第一电感器; 与第一并联谐振器分开设置的一个或多个第二并联谐振器连接在输入端子和输出端子之间，并且在低于由第一串联谐振器形成的通带的频率处具有谐振频率和反谐振频率 和第一并联谐振器; 其中由所述至少一个第一串联谐振器和所述第一电感器形成的第一衰减极点和由所述一个或多个第二并联谐振器的谐振响应形成的第二衰减极点形成衰减区域。
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公开(公告)号：US09148106B2
公开(公告)日：2015-09-29
申请号：US13907661
申请日：2013-05-31
发明人： Masafumi Iwaki
CPC分类号： H03H1/00 , H03H9/0561 , H03H9/0571 , H03H9/0576
摘要： An acoustic wave device includes: an acoustic wave filter chip that is mounted on a multilayered substrate including wiring layers; a first wiring that is electrically coupled to an internal circuit of the acoustic wave filter chip and formed in a first wiring layer of the multilayered substrate; a second wiring that is formed in a second wiring layer separate from the first wiring layer; and a via wiring that penetrates at least a part of the multilayered substrate and connects the first wiring to the second wiring; wherein the first wiring, the second wiring, and the via wiring forms a first inductor of which a direction of magnetic flux intersects with a stacking direction of the multilayered substrate.
摘要翻译： 声波装置包括：安装在包括布线层的多层基板上的声波滤波器芯片; 电耦合到所述声波滤波器芯片的内部电路并形成在所述多层基板的第一布线层中的第一布线; 形成在与第一布线层分离的第二布线层中的第二布线; 以及通孔布线，其穿透所述多层基板的至少一部分，并将所述第一布线连接到所述第二布线; 其中所述第一布线，所述第二布线和所述通孔布线形成磁通方向与所述多层基板的堆叠方向相交的第一电感器。
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