专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明公开

EP0103932A3 Acoustic surface wave device 无效
标题翻译：声表面波器件
公开(公告)号：EP0103932A3
公开(公告)日：1985-11-06
申请号：EP83201333
申请日：1983-10-05
申请人： PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES LIMITED , N.V. Philips' Gloeilampenfabrieken
发明人： Schofield, John
IPC分类号： H03H09/64 , H03H09/76
CPC分类号： H03H9/02905 , H03H9/02708 , H03H9/02795 , H03H9/02842 , H03H9/1452 , H03H9/14547 , H03H9/14552 , H03H9/14573
摘要： In an acoustic surface wave device employing an input and an output transducer (2, 3) and a multistrip coupler (5), the input and output tracks (11, 12) may have to be well separated to avoid unwanted acoustic energy transfer. As a result, a significant loss can occur from the launching of acoustic energy from the interconnecting conductors of the msc. In the improved device, the interconnecting conductors (22, 32') are given a spacing which is different from the, or the equivalent, wide-aperture beam spacing of conductors (16,17; 36', 37') in either track of the msc, and which must not be such as to launch any acoustic surface or bulk waves within the frequency passband. In a forward transfer msc different spacings can alternate, and in a reflective msc the spacing can take the mean of the respective equivalent wide-aperture-beam spacings of the coupler electrodes. When a reflective msc is used there is a risk of acoustic reflection from one track to the other causing spurious response effects, especially when single guided mode transducers are employed. This is overcome by inclining the connecting strips (32') to the perpendicular to the propagation direction.
摘要翻译：在采用输入和输出换能器（2,3）和多带耦合器（5）的声表面波器件中，输入和输出轨迹（11,12）必须很好地分开以避免不需要的声能转移。因此，从msc的互连导体发射声能会发生显着的损失。在改进的装置中，互连导体（22,32'）的间距与导体（16,17; 36'，37'）的任一轨道或等效宽孔径光束间距不同 msc，并且不得在频率通带内发射任何声表面或体波。在正向传输msc中，不同的间隔可以交替，并且在反射msc中，间隔可以取各个耦合器电极的等效宽孔径束间距的平均值。当使用反射型msc时，存在从一个轨道到另一个轨道发生声反射的风险，从而导致寄生响应效应，尤其是当使用单导模转换器时。这通过将连接条（32'）倾斜到垂直于传播方向来克服。

82. 发明授权

EP0014117B1 Transducteur d'ondes élastiques de surface et filtre comprenant un tel transducteur 失效
标题翻译：表面声波传感器和包含相同的滤波器
公开(公告)号：EP0014117B1
公开(公告)日：1983-07-06
申请号：EP80400035.4
申请日：1980-01-11
申请人： THOMSON-CSF
发明人： Coussot, Cérard
IPC分类号： H03H9/145 , H03H9/64
CPC分类号： H03H9/14552 , H03H9/02842 , H03H9/1452 , H03H9/14544 , H03H9/14547

83. 发明公开

EP0024927A2 Surface acoustic wave resonator device 失效
标题翻译：谐振器的表面声波。
公开(公告)号：EP0024927A2
公开(公告)日：1981-03-11
申请号：EP80302987.5
申请日：1980-08-28
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Sato, Kouji
IPC分类号： H03H9/64
CPC分类号： H03H9/643 , H03H9/02771 , H03H9/14552
摘要： This disclosure concerns surface acoustic wave resonator devices having grating reflectors. The resonator comprises a substrate of piezoelectric material, an input interdigital transducer which converts electrical energy to surface acoustic wave energy, an output interdigital transducer which converts surface acoustic wave energy to electrical energy, first and second grating reflectors arranged in spaced aligned relationship on opposite ends of the substrate with the input transducer and the output transducer interposed therebetween the input transducer and the output transducer.
The first grating reflector, whose aperture length is the same effective length as the input and output transducers, comprises a first group of interconnected parallel spaced conductors, a second group of interconnected parallel spaced conductors and at least one of isolated parallel conductors positioned between the first and second groups of conductors. Each conductor of the one group is aligned with a corresponding conductor of the first group and a corresponding conductor of the second group. Each conductor of the first and second group is parallel and electrically interconnected. The second grating reflector is identical with the first grating reflector.

84. 发明申请

US20190222200A1 MULTIPLEXER, TRANSMISSION DEVICE, AND RECEPTION DEVICE 审中-公开
公开(公告)号：US20190222200A1
公开(公告)日：2019-07-18
申请号：US16361276
申请日：2019-03-22
申请人： Murata Manufacturing Co., Ltd.
发明人： Yuichi TAKAMINE
IPC分类号： H03H9/72 , H03H9/64 , H04B1/00 , H03H7/38 , H04B1/40 , H03H9/145 , H01L41/053 , H01L41/047 , H01L25/065 , H03H9/54 , H03H9/05 , H03H9/02 , H04B1/18
CPC分类号： H03H9/72 , H01L23/66 , H01L25/0655 , H01L27/20 , H01L41/0475 , H01L41/053 , H01L2223/6655 , H03H7/38 , H03H9/02574 , H03H9/0557 , H03H9/0566 , H03H9/14552 , H03H9/542 , H03H9/6476 , H03H9/6483 , H03H9/725 , H04B1/0057 , H04B1/18 , H04B1/40
摘要： A multiplexer includes filters on one principal surface of a mounting substrate and having mutually different frequency bands, and an inductance element which is incorporated in the mounting substrate and one end of which is connected to one end of the filter. The other end of the inductance element and one end of each of the filters, are connected to each other at a common connection point. The inductance element is defined by spiral wiring conductors disposed in first and second wiring layers provided in an inner layer of the mounting substrate. The mounting substrate includes third and fourth wiring layers which are adjacent to the first and second wiring layers, and in which no ground pattern is provided in a portion corresponding to a formation region of the inductance element.

85. 发明申请

US20170373669A1 ACOUSTIC WAVE RESONATOR, FILTER, AND MULTIPLEXER 审中-公开
公开(公告)号：US20170373669A1
公开(公告)日：2017-12-28
申请号：US15599367
申请日：2017-05-18
申请人： TAIYO YUDEN CO., LTD.
发明人： Masafumi IWAKI , Takashi MATSUDA , Jun TSUTSUMI
IPC分类号： H03H9/64 , H03H9/25 , H03H9/145
CPC分类号： H03H9/6489 , H03H9/02944 , H03H9/14535 , H03H9/14541 , H03H9/14552 , H03H9/1457 , H03H9/25
摘要： An acoustic wave resonator includes: a piezoelectric substrate; and a pair of grating electrodes that is formed on the piezoelectric substrate, one of the pair of grating electrodes including a plurality of first electrode fingers having electric potentials equal to each other, another of the pair of grating electrodes including a plurality of second electrode fingers having electric potentials that differ from the electric potentials of the plurality of first electrode fingers and are equal to each other, two second electrode fingers of the plurality of second electrode fingers being located between at least a pair of adjacent first electrode fingers of the plurality of first electrode fingers, Pg differing from λ/4 where λ represents a wavelength of an acoustic wave excited by the plurality of first electrode fingers and the plurality of second electrode fingers and Pg represents a distance between centers of the two second electrode fingers.

86. 发明授权

US09083305B2 Acoustic wave filter 有权
标题翻译：声波滤波器
公开(公告)号：US09083305B2
公开(公告)日：2015-07-14
申请号：US13647393
申请日：2012-10-09
申请人： NIHON DEMPA KOGYO CO., LTD.
发明人： Tadaaki Tsuda
IPC分类号： H03H9/145 , H03H9/64
CPC分类号： H03H9/14535 , H03H9/14552 , H03H9/14558
摘要： Disclosed is a pass band type acoustic wave filter capable of obtaining an excellent attenuation characteristic in attenuation bands, in which an IDT electrode having a meander structure is used as at least one of the input-side electrode and the output-side electrode, and the attenuation band is provided over/under the pass band. An electrode having a meander structure in which a plurality of IDT blocks are connected to each other in series between the input port or the output port and the ground port is arranged as the input-side IDT electrode and the output-side IDT electrode, and the electrode finger between the neighboring IDT blocks is removed, so as to suppress excitation of an undesired acoustic wave.
摘要翻译：公开了一种通带式声波滤波器，其能够获得衰减频带中优异的衰减特性，其中具有曲折结构的IDT电极用作输入侧电极和输出侧电极中的至少一个，并且衰减带提供在通带之上/之下。具有多个IDT块在输入端口或输出端口与接地端口之间串联连接的曲折结构的电极被布置为输入侧IDT电极和输出侧IDT电极，去除相邻的IDT块之间的电极指，以抑制不需要的声波的激发。

87. 发明申请

US20150171827A1 FILTER DEVICE AND DUPLEXER 有权
标题翻译：过滤器和双工器
公开(公告)号：US20150171827A1
公开(公告)日：2015-06-18
申请号：US14630845
申请日：2015-02-25
申请人： Murata Manufacturing Co., Ltd.
发明人： Koichiro KAWASAKI
IPC分类号： H03H9/72 , H03H9/64
CPC分类号： H03H9/6489 , H03H9/14547 , H03H9/14552 , H03H9/14558 , H03H9/205 , H03H9/6483 , H03H9/725
摘要： In a filter device, a transversal elastic wave filter, which defines a delay element, is connected in parallel with a band pass filter. The transversal elastic wave filter has the same amplitude characteristic as and the opposite phase to the band pass filter at a desired frequency inside an attenuation range of the band pass filter. When a wavelength determined by an electrode finger period of IDTs and is denoted by λ, the distance between the first IDT and the second IDT of the elastic wave filter is about 12λ or less.
摘要翻译：在滤波器装置中，限定延迟元件的横向弹性波滤波器与带通滤波器并联连接。在带通滤波器的衰减范围内，横向弹性波滤波器具有与带通滤波器相同的幅度特性和与相位相反的期望频率。当由IDT的电极指期间确定的波长并且由λ表示时，弹性波滤波器的第一IDT与第二IDT之间的距离为约12λ以下。

88. 发明授权

US08427258B2 Surface acoustic wave device and communication device 有权
标题翻译：声表面波装置及通讯装置
公开(公告)号：US08427258B2
公开(公告)日：2013-04-23
申请号：US12670103
申请日：2008-06-30
申请人： Hiroyuki Tanaka , Takehiro Okumichi
发明人： Hiroyuki Tanaka , Takehiro Okumichi
IPC分类号： H03H9/72 , H03H9/64
CPC分类号： H03H9/14552 , H03H9/0038 , H03H9/02763 , H03H9/02952 , H03H9/14582 , H03H9/14585 , H03H9/14588 , H03H9/6469
摘要： An SAW device includes: a piezoelectric substrate 1; a first and a second SAW elements 2, 3 having three or more odd-number IDT electrodes 4-9 and reflector electrodes 10-13 arranged on the piezoelectric substrate 1; lines 16 which cascade-connect the first and the second SAW elements 2, 3; a first unbalanced signal terminal 14 connected to the IDT electrodes 4, 6 arranged at the both ends of the first SAW elements 2; and a second unbalanced signal terminal 15 connected to the IDT electrodes 7, 9 arranged at the both ends of the second SAW element 3. In each of the first and the second SAW elements 2, 3, one bus bar electrode 17 of each of center IDT electrodes 5, 8 is split into two, and non-split bus bar electrodes 18, 19 of at least one center IDT electrode of the first and the second SAW elements 2, 3 are connected to a reference potential electrode and the lines 16 are made to be balanced signal lines.
摘要翻译： SAW器件包括：压电基片1; 具有布置在压电基板1上的三个或更多个奇数IDT电极4-9和反射器电极10-13的第一和第二SAW元件2,3; 将第一和第二SAW元件2,3级联的线路16; 连接到布置在第一SAW元件2的两端的IDT电极4,6的第一不平衡信号端子14; 以及与设置在第二SAW元件3的两端的IDT电极7,9连接的第二不平衡信号端子15.在第一和第二SAW元件2,3中的每一个中，每个中心的一个母线电极17 IDT电极5,8分成两个，第一和第二SAW元件2,3的至少一个中心IDT电极的非分裂母线电极18,19连接到参考电位电极，线16是成为平衡信号线。

89. 发明授权

US07741930B2 Filter and antenna duplexer 有权
标题翻译：滤波器和天线双工器
公开(公告)号：US07741930B2
公开(公告)日：2010-06-22
申请号：US11509056
申请日：2006-08-24
申请人： Shogo Inoue , Tokihiro Nishihara , Takashi Matsuda , Masanori Ueda
发明人： Shogo Inoue , Tokihiro Nishihara , Takashi Matsuda , Masanori Ueda
IPC分类号： H01L41/00
CPC分类号： H03H9/706 , H03H9/0042 , H03H9/02157 , H03H9/0576 , H03H9/14517 , H03H9/14526 , H03H9/14547 , H03H9/14552 , H03H9/14594 , H03H9/174 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2003/0428 , H03H2003/0435
摘要： There is provided a filter including a first resonator, a second resonator in which an excitation efficiency is reduced more than the first resonator, and an inductor connected in parallel with the second resonator.
摘要翻译：提供了一种滤波器，包括第一谐振器，其中激励效率比第一谐振器更多地减小的第二谐振器，以及与第二谐振器并联连接的电感器。

90. 发明授权

US07400218B2 Surface acoustic wave filter 有权
标题翻译：表面声波滤波器
公开(公告)号：US07400218B2
公开(公告)日：2008-07-15
申请号：US10954477
申请日：2004-10-01
申请人： Hideo Kidoh
发明人： Hideo Kidoh
IPC分类号： H03H9/00 , H01L41/00
CPC分类号： H03H9/14505 , H03H9/14547 , H03H9/14552 , H03H9/14558 , H03H9/6436
摘要： A surface acoustic wave filter includes a surface acoustic wave substrate, an input transducer, and an output transducer. The input and output transducers are arranged on a surface of the surface acoustic wave substrate. Each of the input and output transducers includes a plurality of electrode fingers that is slanted in a direction that is substantially perpendicular to a surface acoustic wave propagation direction such that an electrode finger pitch changes in the direction that is substantially perpendicular to the surface acoustic wave propagation direction. An electrode finger pitch of a portion of the input transducer is different from an electrode finger pitch of a portion of the output transducer that corresponds to the portion of the input transducer in the surface acoustic wave propagation direction.
摘要翻译：表面声波滤波器包括表面声波基板，输入换能器和输出换能器。输入和输出换能器布置在表面声波衬底的表面上。每个输入和输出换能器包括多个电极指，其沿基本上垂直于表面声波传播方向的方向倾斜，使得电极指间距在基本上垂直于表面声波传播的方向上改变方向。输入变换器的一部分的电极指间距与输出变换器的与声表面波传播方向上的输入换能器的部分对应的部分的电极指间距不同。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式