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136 条记录 (耗时 0.031 秒)

    Resonator ladder type surface acoustic wave filter
    94.
    发明授权
    Resonator ladder type surface acoustic wave filter 失效
    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

    Balanced type surface acoustic wave device
    96.
    发明授权
    Balanced type surface acoustic wave device 失效
    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。

    Surface acoustic wave device mounted module
    97.
    发明授权
    Surface acoustic wave device mounted module 失效
    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。