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    Surface acoustic wave filter
    3.
    发明授权
    Surface acoustic wave filter 失效
    表面声波滤波器

    公开(公告)号：US07385468B2

    公开(公告)日：2008-06-10

    申请号：US11019387

    申请日：2004-12-23

    申请人： Hiroyuki Furusato ,  Osamu Kawachi

    发明人： Hiroyuki Furusato ,  Osamu Kawachi

    IPC分类号： H03H9/64

    CPC分类号： H03H9/6483 ,  H03H9/02921

    摘要： Surface acoustic wave (SAW) filter includes SAW resonators, a discharge induction pattern is provided between a ground and at least one of a signal input terminal and a signal output terminal, and the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators. Since the discharge induction pattern has multiple gaps that are narrower than gaps that exist inside electrode patterns of the SAW resonators, it is possible to induce the electrostatic discharge without fault. The multiple gaps are provided so as to protect the SAW resonators against multiple times of electrostatic discharge.

    摘要翻译： 表面声波（SAW）滤波器包括SAW谐振器，在地与信号输入端和信号输出端之中的至少一个之间提供放电感应图案，并且放电感应图案具有比存在的间隙窄的多个间隙 SAW谐振器的内部电极图案。 由于放电感应图案具有比存在于SAW谐振器的电极图案内的间隙窄的多个间隙，因此可以无故障地引起静电放电。 提供多个间隙以便保护SAW谐振器免受多次静电放电。

    Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gap
    6.
    发明授权
    Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gap 有权
    表面声波器件具有较厚的局部母线面积和最佳母线至电极尖端间隙

    公开(公告)号：US07170371B2

    公开(公告)日：2007-01-30

    申请号：US10823648

    申请日：2004-04-14

    申请人： Masanori Ueda ,  Osamu Kawachi ,  Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Yoshio Satoh

    发明人： Masanori Ueda ,  Osamu Kawachi ,  Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Yoshio Satoh

    IPC分类号： H03H9/64 ,  H03H9/25

    CPC分类号： H03H9/6436 ,  H03H9/14538 ,  H03H9/25 ,  H03H9/6433 ,  H03H9/6489

    摘要： Efficient transverse energy confinement, and provision of a surface acoustic wave filter having preferable characteristics of both insertion loss and shape factor are obtained. In the surface acoustic wave filter, electrode fingers of one comb electrode are laid in a state of being inserted to the electrode fingers of the other comb electrode, and a thick film thicker than each plurality of electrode fingers is produced in a partial area of the bus bar, and a tip gap is provided between the top of each plurality of electrode fingers and the end face of the opposed bus bar, with a distance therebetween set not greater than 0.2λ (where, λ is one period of the comb electrode).

    摘要翻译： 获得有效的横向能量限制，并且提供具有插入损耗和形状系数都优选的特性的表面声波滤波器。 在表面声波滤波器中，一个梳状电极的电极指状物被插入到另一梳状电极的电极指的状态，并且在该多个电极指的部分区域中产生厚于多个电极指的厚膜 汇流条，并且在每个多个电极指的顶部和相对的母线的端面之间设置有尖端间隙，其间的距离设置为不大于0.2λ（其中，λ是梳状电极的一个周期） 。

    Surface acoustic wave device with reflection electrodes having pitches that vary
    8.
    发明授权
    Surface acoustic wave device with reflection electrodes having pitches that vary 有权
    表面声波装置，其反射电极具有变化的间距

    公开(公告)号：US07002438B2

    公开(公告)日：2006-02-21

    申请号：US10925152

    申请日：2004-08-25

    申请人： Osamu Kawachi ,  Satoshi Orito ,  Takuya Abe

    发明人： Osamu Kawachi ,  Satoshi Orito ,  Takuya Abe

    IPC分类号： H03H9/64

    CPC分类号： H03H9/6469 ,  H03H9/0042

    摘要： A surface acoustic wave device includes: a substrate; a pair of reflection electrodes that are formed on the substrate; and drive electrodes that are interposed between the reflection electrodes. In this surface acoustic wave device, the pitches in each of the reflection electrodes vary according to a predetermined variation pattern. With this structure, the suppression on spurious signals and the shape factor (the sharpness of the cut-off region of the pass band) can be improved at the same time.

    摘要翻译： 声表面波装置包括：基板; 形成在基板上的一对反射电极; 以及介于反射电极之间的驱动电极。 在该声表面波装置中，每个反射电极中的间距根据预定的变化图案而变化。 利用这种结构，可以同时提高抑制寄生信号和形状因子（通带的截止区域的清晰度）。

    Surface acoustic wave device
    9.
    发明申请
    Surface acoustic wave device 有权
    表面声波装置

    公开(公告)号：US20060022767A1

    公开(公告)日：2006-02-02

    申请号：US11024769

    申请日：2004-12-30

    申请人： Noriaki Taniguchi ,  Osamu Furukawa ,  Toshihiko Murata ,  Osamu Kawachi

    发明人： Noriaki Taniguchi ,  Osamu Furukawa ,  Toshihiko Murata ,  Osamu Kawachi

    IPC分类号： H03H9/72

    CPC分类号： H01F17/0006 ,  H01F5/003 ,  H01F27/29 ,  H01F2017/0046 ,  H01L23/5227 ,  H01L2924/0002 ,  H03H9/0576 ,  H03H9/725 ,  H03H2001/0078 ,  H01L2924/00

    摘要： The present invention permits further miniaturization and shortening of a surface acoustic wave device while avoiding the influence of the surface acoustic wave device on the inductance value and performance index (Q value) of the spiral inductor. The chip on which the spiral inductor is formed is flip-chip mounted in a package together with another surface acoustic wave device chip. The package is provided with a hermetically sealed lid. A conductor pattern is formed on a face of the package that opposes the spiral inductor. Further, the overlap between the region of the spiral inductor and the conductor pattern is 7% or less.

    摘要翻译： 本发明允许进一步小型化和缩短声表面波器件，同时避免弹性表面波器件对螺旋电感器的电感值和性能指标（Q值）的影响。 其上形成有螺旋电感器的芯片与另一声表面波器件芯片一起倒装安装在封装中。 该包装有一个气密密封的盖子。 导体图案形成在封装的面对螺旋电感器的表面上。 此外，螺旋电感器的区域和导体图案之间的重叠为7％以下。

    Surface acoustic wave device with two split interdigital transducers connected by specified electrode structures
    10.
    发明授权
    Surface acoustic wave device with two split interdigital transducers connected by specified electrode structures 有权
    具有通过指定电极结构连接的两个分叉叉指式换能器的表面声波装置

    公开(公告)号：US06965282B2

    公开(公告)日：2005-11-15

    申请号：US10959173

    申请日：2004-10-07

    申请人： Osamu Kawachi ,  Motoyuki Tajima ,  Takuya Abe

    发明人： Osamu Kawachi ,  Motoyuki Tajima ,  Takuya Abe

    IPC分类号： H03H9/00 ,  H03H9/145 ,  H03H9/64

    CPC分类号： H03H9/0042 ,  H03H9/0028 ,  H03H9/0061 ,  H03H9/02992 ,  H03H9/14591

    摘要： Improvement on an insertion loss, as well as phase balance, is obtained in surface acoustic wave device. In the surface acoustic wave device, when an aperture length of the electrode fingers of an interdigital transducer for input or an interdigital transducer for output is defined as X, the interdigital transducer for input or the interdigital transducer for output includes two split interdigital transducers respectively including electrode fingers having an aperture length of approximately X/2, and electrodes of respective electrode fingers in the first and second split interdigital transducers are extracted from the two split interdigital transducers, and disposed in such a way as signals in the two outputs or inputs connected to a balanced terminal pair have a phase difference of 180°, and the two split interdigital transducers are connected in series by a common electrode of solid shape, of which electrode width is greater than twice the pitch of the electrode fingers in the two split interdigital transducers, and further the common electrode is connected to the ground potential.

    摘要翻译： 弹性表面波器件可以获得插入损耗以及相位平衡的改善。 在表面声波装置中，当用于输入的叉指式换能器或用于输出的叉指换能器的电极指的孔径长度被定义为X时，用于输入的叉指换能器或用于输出的叉指式换能器包括两个分叉叉指换能器，分别包括 具有大约X / 2的开口长度的电极指，并且从两个分叉叉指式换能器中提取第一和第二分割叉指式换能器中的各个电极指的电极，并且以与两个输出或输入中的信号相连的方式设置 平衡端子对具有180°的相位差，并且两个分离叉指式换能器通过固体形状的公共电极串联连接，其电极宽度大于两个分叉叉指中电极指的间距的两倍 换能器，另外公共电极连接到地电位。