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1. 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。

2. 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。

3. 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。

4. 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。

5. 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。

6. 发明授权

US5721519A Balanced type surface acoustic wave device 失效
公开(公告)号：US5721519A
公开(公告)日：1998-02-24
申请号：US517577
申请日：1995-08-21
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.

7. 发明授权

US6018281A Resonator type surface acoustic wave ladder filter with voltage variable capacitance element 失效
标题翻译：具有电压可变电容元件的谐振器型表面声波滤波器
公开(公告)号：US6018281A
公开(公告)日：2000-01-25
申请号：US616190
申请日：1996-03-15
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： H03H9/64
CPC分类号： H03H9/64
摘要： To realizing a filter which is capable of properly controlling the passband, and the attenuation pole of a surface acoustic wave filter, a surface acoustic wave filter connected in a ladder type with the surface acoustic wave resonators 104, 105 has an element 106 which changes in capacity by voltage to be impressed and is connected in series with a resonator 105 connected in parallel to the signal line 100.
摘要翻译：为了实现能够适当地控制通带的滤波器和表面声波滤波器的衰减极，以梯形式与表面声波谐振器104,105连接的表面声波滤波器具有元件106，该元件106 容量被施加的电压并与与信号线100并联连接的谐振器105串联连接。

8. 发明授权

US5847626A Balanced-type surface acoustic wave lattice filter 失效
标题翻译：平衡型声表面波阵列滤波器
公开(公告)号：US5847626A
公开(公告)日：1998-12-08
申请号：US655049
申请日：1996-05-29
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： H03H9/00 , H03H9/64 , H03H9/52
CPC分类号： H03H9/0028
摘要： A balanced-type surface acoustic wave filter is provided which can attain a balanced-type of high frequency circuit without connecting a balance-unbalanced conversion circuit. A substrate of tantalic acid lithium substrate with 36 degrees rotation, Y cut, and X propagation is used, and aluminium is used for electrode to form resonators. Then, two resonators in a serial arm and two resonators in a parallel arm are connected in the form of symmetry and lattice to form a balanced-type surface acoustic wave filter. In this configuration, antiresonance frequency in the serial arms and resonance frequency in the parallel arms are substantially equal to each other.
摘要翻译：提供一种平衡型表面声波滤波器，其可以在不连接平衡不平衡转换电路的情况下获得平衡型高频电路。使用具有36度旋转，Y切割和X传播的钽酸锂衬底的衬底，并且使用铝用于电极以形成谐振器。然后，串联臂中的两个谐振器和并联臂中的两个谐振器以对称和格子的形式连接以形成平衡型表面声波滤波器。在这种结构中，串联臂中的反谐振频率和并联臂中的共振频率基本相等。

9. 发明授权

US5506552A Surface acoustic wave filter with multiple ground terminals 失效
标题翻译：具有多个接地端子的表面声波滤波器
公开(公告)号：US5506552A
公开(公告)日：1996-04-09
申请号：US334673
申请日：1994-11-04
申请人： Shun-ichi Seki , Kazuo Eda , Yutaka Taguchi , Keiji Onishi
发明人： Shun-ichi Seki , Kazuo Eda , Yutaka Taguchi , Keiji Onishi
IPC分类号： H03H9/64
CPC分类号： H03H9/6483
摘要： In a surface acoustic wave (SAW) filter, on a 36.degree. Y-cut X-propagation lithium tantalate substrate, series branch SAW resonators, which are connected in series between an input terminal and an output terminal, and parallel branch SAW resonators, which are connected between respective pairs of the series branch resonators by wirings and which are grounded, are provided. Two series branch resonators and one parallel branch resonator are connected in a T shape, so as to form a fundamental unit. In the SAW filter, three fundamental units are serially connected. An interdigital transducer (IDT) included in each resonator is made of a metal film containing aluminum as the main component. The thickness of the metal film is in the range of 8% to 10% of the electrode pitch of the IDT of the parallel branch resonator.
摘要翻译：在表面声波（SAW）滤波器中，在36°Y切割的X传播的钽酸锂衬底上串联连接在输入端子和输出端子之间的分支SAW谐振器以及并联支路SAW谐振器，其中通过布线连接在各对串联支路谐振器之间并且被接地。两个串联支路谐振器和一个并联支路谐振器以T形连接起来形成基本单元。在SAW滤波器中，三个基本单元串联。包含在每个谐振器中的叉指式换能器（IDT）由以铝为主要成分的金属膜制成。金属膜的厚度在并联支路谐振器的IDT的电极间距的8％〜10％的范围内。

10. 发明授权

US6166611A Resonator ladder type surface acoustic wave filter 失效
标题翻译：谐振梯型声表面波滤波器
公开(公告)号：US6166611A
公开(公告)日：2000-12-26
申请号：US57916
申请日：1998-04-09
申请人： Shun-ichi Seki , Yutaka Taguchi , Keiji Onishi , Osamu Kawasaki , Kazuo Eda
发明人： Shun-ichi Seki , Yutaka Taguchi , Keiji Onishi , Osamu Kawasaki , Kazuo Eda
IPC分类号： H03H9/145 , H03H9/05 , H03H9/25 , H03H9/64
CPC分类号： H03H9/1085 , H01L2224/05568 , H01L2224/05573 , H01L2224/16225 , H01L2224/32225 , H01L2224/48091 , H01L2224/48227 , H01L2224/48472 , H01L2224/73265 , H01L2924/00014 , H01L2924/16195 , H03H9/059 , H03H9/6483 , H01L2924/00 , H01L2224/05599
摘要： A resonator ladder type surface acoustic wave filter, has an input electrical terminal, an output electrical terminal, and a grounding terminal being formed on a piezoelectric substrate, a series arm surface acoustic wave resonator and a parallel arm surface acoustic wave resonator, each constructed from an interdigital transducer for exciting a surface acoustic wave, being formed between said input electrical terminal and said output electrical terminal, and when the center frequency of said resonator ladder type surface acoustic wave filter is denoted by fc, and capacitance determined by the number of electrode finger pairs and electrode finger overlap width in said interdigital transducer of said parallel arm surface acoustic wave resonator is denoted by Cp (fc: center frequency [GHz], Cp: capacitance of the interdigital transducer of the parallel arm surface acoustic wave resonator), capacitance C of multiples of said parallel arm surface acoustic wave resonator, connected to the same node between said input electrical terminal and said output electrical terminal, always satisfies the relationfc.multidot.Cp
摘要翻译：一种谐振梯型声表面波滤波器，具有输入电端子，输出电端子和形成在压电基板上的接地端子，串联臂声表面波谐振器和平行臂表面声波谐振器，每个由在所述输入电端子和所述输出电端子之间形成用于激励表面声波的叉指换能器，并且当所述共振器梯型表面声波滤波器的中心频率由fc表示时，并且由电极数量确定的电容所述平行臂声表面波谐振器的叉指式换能器中的手指对和电极指重叠宽度由Cp（fc：中心频率[GHz]，Cp：并联臂声表面波谐振器的叉指式换能器的电容），电容所述平行臂声表面波谐振器的倍数为C，连接到s 所述输入电端子和所述输出电端子之间的ame节点总是满足关系fcxCp <4

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