专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US5589806A Surface acoustic wave filter having parallel/serial resonator connection based on transmitting and receiving frequencies 失效
标题翻译：具有基于发射和接收频率的并联/串联谐振器连接的表面声波滤波器
公开(公告)号：US5589806A
公开(公告)日：1996-12-31
申请号：US368981
申请日：1995-01-05
申请人： Yutaka Taguchi , Kazuo Eda , Shun-ichi Seki , Keiji Onishi
发明人： Yutaka Taguchi , Kazuo Eda , Shun-ichi Seki , Keiji Onishi
IPC分类号： H03H9/64 , H03H9/72
CPC分类号： H03H9/6483 , H03H9/64
摘要： A surface acoustic wave filter having a configuration in which a plurality of series surface acoustic wave resonators and parallel surface acoustic wave resonators are connected is used as a receiving filter included in a receiving circuit of a communication apparatus capable of simultaneously transmitting and receiving signals. When the transmitting frequency is higher than the receiving frequency, one of the parallel surface acoustic wave resonator, connected between the signal line and the ground, is disposed most closely to the input terminal of the filter. When the transmitting frequency is lower than the receiving frequency, one of the series surface acoustic wave resonator, connected in series to the signal line, is disposed most closely to the input terminal of the filter. Accordingly, the singular point of the filter is prevented from coinciding with the transmitting frequency, so that the deterioration of the resonator is prevented.
摘要翻译：使用具有多个串联声表面波谐振器和平行声表面波谐振器连接的结构的声表面波滤波器作为能够同时发送和接收信号的通信装置的接收电路中的接收滤波器。当发射频率高于接收频率时，连接在信号线和地之间的平行声表面波谐振器之一最靠近滤波器的输入端设置。当发送频率低于接收频率时，与信号线串联连接的串联声表面波谐振器中的一个最靠近滤波器的输入端设置。因此，防止滤波器的奇异点与发射频率一致，从而防止谐振器的劣化。

12. 发明授权

US6043725A Filter circuit having plural passing bands 失效
标题翻译：滤波电路具有多个通带
公开(公告)号：US6043725A
公开(公告)日：2000-03-28
申请号：US86491
申请日：1998-05-29
申请人： Yutaka Taguchi , Kazuo Eda , Osamu Kawasaki , Shun-ichi Seki , Keiji Onishi , Hiroki Sato
发明人： Yutaka Taguchi , Kazuo Eda , Osamu Kawasaki , Shun-ichi Seki , Keiji Onishi , Hiroki Sato
IPC分类号： H03H9/64 , H03H9/72 , H01P1/20 , H01P1/213
CPC分类号： H03H9/72 , H03H2240/00 , H03H2250/00
摘要： The filter circuit is a filter circuit having plural passbands including a first filter having a first passband, and a second filter having a second passband, with their inputs and outputs connected mutually so that these filters are connected in parallel. Inductor elements are connected in series to the terminal of the first filter to which the second filter is connected, and capacitor elements are connected in series to the terminal of the second filter to which the first filter is connected.
摘要翻译：滤波器电路是具有多个通带的滤波器电路，该通带包括具有第一通带的第一滤波器和具有第二通带的第二滤波器，其输入和输出相互连接，使得这些滤波器并联连接。电感元件与第二滤波器连接的第一滤波器的端子串联连接，电容器元件与第一滤波器连接的第二滤波器的端子串联连接。

13. 发明授权

US5592135A Surface acoustic wave filter with different filter portions satisfying complex conjugate relationship of impedances 失效
标题翻译：具有不同滤波器部分的表面声波滤波器满足复阻抗的共轭关系
公开(公告)号：US5592135A
公开(公告)日：1997-01-07
申请号：US373033
申请日：1995-01-17
申请人： Yutaka Taguchi , Kazuo Eda , Keiji Onishi , Shun-ichi Seki
发明人： Yutaka Taguchi , Kazuo Eda , Keiji Onishi , Shun-ichi Seki
IPC分类号： H03H9/145 , H03H9/64
CPC分类号： H03H9/6436 , H03H9/6483
摘要： A SAW filter is configured so that a resonator-type filter portion, in which a plurality of SAW resonators are connected in series and in parallel, and a 3-electrode type serially coupled filter portion, in which three IDTs for inputting and outputting signals are interposed between reflectors, are serially connected on one and the same substrate. The design parameters of the respective SAW resonators are adjusted so that the impedances of respective sides of the filter portions, when viewed from the node of the resonator-type SAW filter portion and the 3-electrode type serially coupled SAW filter portion, substantially have a complex conjugate relationship with each other in the pass frequency band.
摘要翻译： SAW滤波器被配置为使得多个SAW谐振器串联并联连接的谐振器型滤波器部分和3电极型串联滤波器部分，其中用于输入和输出信号的三个IDT是介于反射器之间，在同一基板上串联连接。调整各个SAW谐振器的设计参数，使得当从谐振器型SAW滤波器部分的节点和3电极型串联SAW滤波器部分观察时，滤波器部分的各侧的阻抗基本上具有在通过频带中的复共轭关系。

14. 发明授权

US5453652A Surface acoustic wave device with interdigital transducers formed on a holding substrate thereof and a method of producing the same 失效
标题翻译：在其保持基板上形成有叉指式换能器的表面声波装置及其制造方法
公开(公告)号：US5453652A
公开(公告)日：1995-09-26
申请号：US168658
申请日：1993-12-16
申请人： Kazuo Eda , Yutaka Taguchi , Keiji Onishi , Shun-ichi Seki
发明人： Kazuo Eda , Yutaka Taguchi , Keiji Onishi , Shun-ichi Seki
IPC分类号： H03H3/08 , H03H9/05 , H03H9/08 , H01L41/08 , H03H9/25
CPC分类号： H03H9/1092
摘要： A surface acoustic wave device includes: a holding substrate; a piezoelectric substrate; an interdigital transducer formed on the holding substrate; and supports for holding said piezoelectric substrate on the holding substrate so that the interdigital transducer is evenly in contact with the piezoelectric substrate.
摘要翻译：表面声波装置包括：保持基板; 压电基板; 形成在保持基板上的叉指换能器; 并且支撑用于将所述压电基板保持在保持基板上，使得叉指式换能器与压电基板均匀地接触。

15. 发明授权

US5446330A Surface acoustic wave device having a lamination structure 失效
标题翻译：表面声波装置具有层叠结构
公开(公告)号：US5446330A
公开(公告)日：1995-08-29
申请号：US213218
申请日：1994-03-15
申请人： Kazuo Eda , Yutaka Taguchi , Keiji Onishi , Shun-ichi Seki
发明人： Kazuo Eda , Yutaka Taguchi , Keiji Onishi , Shun-ichi Seki
IPC分类号： H03H3/08 , H03H9/02 , H01L41/08
CPC分类号： H03H9/02834 , H03H3/08 , H03H9/02574
摘要： A surface acoustic wave device includes: a single crystal piezoelectric substrate; a single crystal piezoelectric thin plate formed on the single crystal piezoelectric substrate, the single crystal piezoelectric thin plate being bonded to the single crystal piezoelectric substrate by direct bonding; and interdigital transducers formed on the single crystal piezoelectric thin plate, for exciting a surface acoustic wave in at least the single crystal piezoelectric thin plate.
摘要翻译：声表面波装置包括：单晶压电基板; 形成在单晶体压电基片上的单晶压电薄片，通过直接键合将单晶压电薄片与单晶压电基片接合; 以及形成在单晶压电薄板上的叉指换能器，用于激励至少单晶压电薄板中的表面声波。

16. 发明授权

US5892418A Balanced type surface acoustic wave device 失效
标题翻译：平衡型声表面波装置
公开(公告)号：US5892418A
公开(公告)日：1999-04-06
申请号：US898769
申请日：1997-07-23
申请人： Keiji Onishi , Kazuo Eda , Yutaka Taguchi , Shunichi Seki
发明人： Keiji Onishi , Kazuo Eda , Yutaka Taguchi , Shunichi Seki
IPC分类号： H03H9/25 , H03H9/00 , H03H9/64
CPC分类号： H03H9/6436 , H03H9/0038 , H03H9/0042 , H03H9/1071 , H03H9/6433
摘要： The present invention provides surface acoustic wave devices which do not require a balanced-to-unbalanced transformer circuit regardless of the type of the peripheral circuits of the balanced type surface acoustic wave filter, i.e. a balanced type device or an unbalanced type. A transmitting interdigital transducer and a receiving interdigital transducer are formed on a substrate comprising 41.degree. Y cut-X propagation lithium niobate. A balanced type surface acoustic wave filter is formed on a substrate comprising 36.degree. Y cut-X propagation lithium tantalate. The balanced type surface acoustic wave filter comprises two series-arm surface acoustic wave resonators and two crossed-arm surface acoustic wave resonators connected in a lattice. The substrate on which the transmitting interdigital transducer and the receiving interdigital transducer are formed and the substrate on which the balanced type surface acoustic wave filter is formed are located in a ceramic package. One of the input terminals of the transmitting interdigital transducer is grounded. The output terminals of the receiving interdigital transducer are connected to the input terminals of the balanced type surface acoustic wave filter.
摘要翻译：本发明提供了不需要平衡型不平衡变压器电路的表面声波装置，而不管平衡型表面声波滤波器的外围电路的类型，即平衡型装置或不平衡型。在包含41°Y切割X传播铌酸锂的基板上形成发射叉指式换能器和接收叉指式换能器。在包含36°Y切割X传播的钽酸锂的基板上形成平衡型表面声波滤波器。平衡型表面声波滤波器包括两个串联臂表面声波谐振器和两个以格子连接的交叉臂表面声波谐振器。其上形成有发送叉指式换能器和接收叉指式换能器的基板和形成有平衡型表面声波滤波器的基板位于陶瓷封装中。发射叉指式换能器的输入端之一接地。接收叉指式换能器的输出端连接到平衡型声表面波滤波器的输入端。

17. 发明授权

US5459368A Surface acoustic wave device mounted module 失效
标题翻译：表面声波装置安装模块
公开(公告)号：US5459368A
公开(公告)日：1995-10-17
申请号：US278905
申请日：1994-07-22
申请人： Keiji Onishi , Shunichi Seki , Yutaka Taguchi , Kazuo Eda
发明人： Keiji Onishi , Shunichi Seki , Yutaka Taguchi , Kazuo Eda
IPC分类号： H03H9/10 , H03H9/02 , H03H9/25 , H01L41/08
CPC分类号： H03H9/1071 , H03H9/0542 , H03H9/0557 , H03H9/059 , H03H9/1085 , H01L2224/16225 , H01L2224/16235 , H01L2224/32225 , H01L2224/73203 , H01L2224/73204 , H01L2224/73253 , H01L2924/01046 , H01L2924/01079 , H01L2924/09701 , H01L2924/15192 , H01L2924/16152 , H01L2924/16195 , H01L2924/19105 , H01L2924/3011 , H01L2924/3025
摘要： This invention provides a surface acoustic wave device mounted module which is miniature, light, and highly reliable. The surface acoustic wave device mounted module also has excellent frequency characteristics. The surface acoustic wave device mounted module includes a multilayer substrate which has at least one layer of a shield pattern, input-output electrodes, grounding electrodes, through holes used for connecting electrodes, and a surface acoustic wave element. The surface acoustic wave element has metallic bumps, which are transfer-coated with a conductive resin, on electrode pads and an insulating resin around the surface acoustic wave element. The electrode pads are input-output terminals and grounding terminals formed on the surface acoustic wave element. Continuities between the input-output terminals and the input-output electrodes, and between the grounding terminals and the grounding electrodes are established by the through holes. An electrode pattern is formed on the surface of the multilayer substrate facing and surrounding the surface acoustic wave element. A metallic lid is attached to the electrode pattern by a solder or a conductive resin so that the surface acoustic wave element is sealed in an airtight condition. The electrode pattern is connected to the grounding electrodes by the through holes.
摘要翻译：本发明提供一种微型，轻型，高可靠性的表面声波装置安装模块。表面声波装置安装模块也具有优异的频率特性。表面声波装置安装模块包括具有至少一层屏蔽图案，输入输出电极，接地电极，用于连接电极的通孔和表面声波元件的多层基板。表面声波元件具有金属凸块，其在电极焊盘上传导涂覆有导电树脂，并在表面声波元件周围具有绝缘树脂。电极焊盘是形成在声表面波元件上的输入输出端子和接地端子。输入输出端子与输入输出电极之间以及接地端子与接地电极之间的连续性由通孔构成。在面对并围绕声表面波元件的多层基板的表面上形成电极图案。通过焊料或导电树脂将金属盖附接到电极图案，使得表面声波元件在气密状态下被密封。电极图案通过通孔与接地电极连接。

18. 发明授权

US5485052A Three electrode type saw longitudinal coupling filter 失效
标题翻译：三电极型锯式耦合滤波器
公开(公告)号：US5485052A
公开(公告)日：1996-01-16
申请号：US366390
申请日：1994-12-29
申请人： Shunichi Seki , Kazuo Eda , Yutaka Taguchi , Keiji Onishi
发明人： Shunichi Seki , Kazuo Eda , Yutaka Taguchi , Keiji Onishi
IPC分类号： H03H9/02 , H03H9/145 , H03H9/25 , H03H9/64 , H01L41/08
CPC分类号： H03H9/02559 , H03H9/1455 , H03H9/6426
摘要： A three electrode type SAW longitudinal coupling filter includes a piezoelectric substrate having an electromechanical coupling factor (K.sup.2) higher than 10% and, three sets in total of input electrodes and output electrodes. Each of the electrodes includes a plurality of a electrode fingers of comb shape and are formed on the piezoelectric substrate. Reflectors are disposed at opposite sides of the input electrodes and output electrodes. The number of pairs of electrode fingers of the input electrodes is differentiated from the number of pairs of electrode fingers of the output electrodes. By the above arrangement, a large pass-band width can be obtained with small ripples and with an increase of the attenuation amount outside the band region.
摘要翻译：三电极型SAW纵向耦合滤波器包括具有高于10％的机电耦合系数（K2）的压电基片，以及输入电极和输出电极总共三组。每个电极包括多个梳形电极指并形成在压电基片上。反射器设置在输入电极和输出电极的相对侧。输入电极的电极指的对数与输出电极的电极指的数量不同。通过上述布置，可以获得具有小波纹的大的通带宽度，并且在带区域外增加衰减量。

19. 发明授权

US6107899A Surface acoustic wave filter with grounds not connected in the package or on the piezoelectric substrate 失效
标题翻译：表面声波滤波器，带有未连接在封装或压电基板上的接地
公开(公告)号：US6107899A
公开(公告)日：2000-08-22
申请号：US955298
申请日：1997-10-21
申请人： Yutaka Taguchi , Kazuo Eda , Keiji Onishi , Shunichi Seki
发明人： Yutaka Taguchi , Kazuo Eda , Keiji Onishi , Shunichi Seki
IPC分类号： H03H9/05 , H03H9/10 , H03H9/64
CPC分类号： H03H9/1071 , H03H9/6436 , H03H9/6483
摘要： A high-frequency surface acoustic wave filter is such that a plurality of comb electrodes are formed on a piezoelectric substrate, and said high-frequency surface acoustic wave filter has:said piezoelectric substrate;an input terminal;an output terminal; andat least two ground terminals provided on said piezoelectric substrate,wherein said ground terminals are neither connected on said piezoelectric substrate nor connected in a package containing said piezoelectric substrate.
摘要翻译：高频表面声波滤波器是在压电基板上形成多个梳状电极，所述高频声表面波滤波器具有：所述压电基板; 输入端; 输出端子; 以及设置在所述压电基板上的至少两个接地端子，其中所述接地端子既不连接在所述压电基板上，也不连接在包含所述压电基板的封装中。

20. 发明授权

US5936488A Surface acoustic wave filter having input and output transducers with different aperture lengths 失效
标题翻译：具有不同孔径长度的输入和输出换能器的表面声波滤波器
公开(公告)号：US5936488A
公开(公告)日：1999-08-10
申请号：US788527
申请日：1997-01-24
申请人： Yutaka Taguchi , Kazuo Eda , Shunichi Seki , Keiji Onishi
发明人： Yutaka Taguchi , Kazuo Eda , Shunichi Seki , Keiji Onishi
IPC分类号： H03H9/00 , H03H9/145 , H03H9/25 , H03H9/64
CPC分类号： H03H9/6436 , H03H9/0042 , H03H9/25 , H03H9/1452
摘要： A surface acoustic wave filter is provided which performs balanced signal/unbalanced signal conversion. The input and output impedances are different from each other. In a surface acoustic wave filter of the longitudinal mode type, a signal is applied to two terminals of an input interdigital transducer, or a signal is output from two terminals of an output interdigital transducer, thereby consituting a balanced type filter. The aperture length of the input interdigital transducer is different from that of the output interdigital transducer.
摘要翻译：提供了执行平衡信号/不平衡信号转换的表面声波滤波器。输入和输出阻抗彼此不同。在纵模式的声表面波滤波器中，将信号施加到输入叉指式换能器的两个端子，或者从输出叉指换能器的两个端子输出信号，从而构成平衡型滤波器。输入叉指式换能器的孔径长度与输出叉指式换能器的孔径长度不同。

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