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    Surface acoustic wave ladder filter using interdigital transducers not involving resonance
    2.
    发明授权
    Surface acoustic wave ladder filter using interdigital transducers not involving resonance 有权
    表面声波梯形滤波器使用不涉及共振的叉指式换能器

    公开(公告)号：US06597261B2

    公开(公告)日：2003-07-22

    申请号：US09819764

    申请日：2001-03-29

    申请人： Jun Tsutsumi ,  Shogo Inoue ,  Takashi Matsuda ,  Osamu Ikata

    发明人： Jun Tsutsumi ,  Shogo Inoue ,  Takashi Matsuda ,  Osamu Ikata

    IPC分类号： H03H964

    CPC分类号： H03H9/14552 ,  H03H9/6483

    摘要： A surface acoustic wave filter has, on a piezoelectric substrate, surface acoustic wave resonators each composed of an interdigital transducer and reflectors disposed on both sides of the interdigital transducer. The surface acoustic wave resonators are arranged in series arms and in parallel arms to be connected in a ladder form. At least one of the surface acoustic wave resonators is replaced with an interdigital transducer that does not involve resonance in a propagation direction of a surface acoustic wave.

    摘要翻译： 表面声波滤波器在压电基板上具有各自由叉指换能器和布置在叉指式换能器两侧的反射器构成的表面声波谐振器。 表面声波谐振器以串联臂和并联臂布置成梯形连接。 表面声波谐振器中的至少一个被替换为不涉及在声表面波的传播方向上的共振的叉指式换能器。

    Surface acoustic wave ladder filter having at least one resonator with electrode finger pairs in inverted orientation
    4.
    发明授权
    Surface acoustic wave ladder filter having at least one resonator with electrode finger pairs in inverted orientation 有权
    具有至少一个谐振器的表面声波滤波器，其具有反向取向的电极指对

    公开(公告)号：US06570471B2

    公开(公告)日：2003-05-27

    申请号：US09915550

    申请日：2001-07-27

    申请人： Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Osamu Ikata

    发明人： Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Osamu Ikata

    IPC分类号： H03H964

    CPC分类号： H03H9/14505 ,  H03H9/14526 ,  H03H9/6423 ,  H03H9/6483

    摘要： A surface acoustic wave filter includes a piezoelectric substrate having formed thereon plural surface acoustic wave resonators electrically connected in a ladder form for exciting a surface acoustic wave, wherein each of the surface acoustic wave resonators is composed of an interdigital transducer and reflectors arranged closely on both sides of the transducer in a direction parallel to a propagation direction of the excited surface acoustic wave; the interdigital transducer of at least one of the surface acoustic wave resonators is composed of a prescribed number of pairs of comb form electrodes; and the surface acoustic wave excited by the pairs of comb form electrodes contains two kinds of surface acoustic waves having phases that are different from each other by 180°.

    摘要翻译： 表面声波滤波器包括：压电基板，其上形成有以梯形电连接以激励表面声波的多个声表面波谐振器，其中每个声表面波谐振器由交叉指型换能器和紧密配置在两者上的反射器组成 换能器的侧面在平行于被激励表面声波的传播方向的方向上; 至少一个声表面波谐振器的叉指换能器由规定数量的梳形电极对组成; 并且由梳形电极对激发的表面声波包含具有彼此相差180°的相位的两种表面声波。

    Surface acoustic wave resonator and filter using the same with specified distance between an interdigital transducer and reflector
    5.
    发明授权
    Surface acoustic wave resonator and filter using the same with specified distance between an interdigital transducer and reflector 失效
    表面声波谐振器和滤波器使用与指状传感器和反射器之间的指定距离

    公开(公告)号：US06466108B2

    公开(公告)日：2002-10-15

    申请号：US09771877

    申请日：2001-01-30

    申请人： Takashi Matsuda ,  Jun Tsutsumi ,  Shogo Inoue ,  Osamu Ikata

    发明人： Takashi Matsuda ,  Jun Tsutsumi ,  Shogo Inoue ,  Osamu Ikata

    IPC分类号： H03H964

    CPC分类号： H03H9/14582 ,  H03H9/14552 ,  H03H9/6423 ,  H03H9/6483

    摘要： A surface acoustic wave resonator includes a piezoelectric substrate having formed thereon a interdigital transducer part comprising plural electrode fingers having a period pi that is substantially equal to a wavelength of a surface acoustic wave to be excited, and at least one reflector arranged in the vicinity of the interdigital transducer part to reflect the surface acoustic wave excited by the interdigital transducer part in a direction parallel to a propagation direction of the surface acoustic wave. The interdigital transducer part has three or more electrode fingers within the period pi, and the reflector has plural gratings having a period pr that is equal to a half of a wavelength of a surface acoustic wave propagating in the reflector.

    摘要翻译： 表面声波谐振器包括：压电基板，其上形成有叉指式换能器部分，其包括多个电极指，所述多个电极指具有基本上等于待激励的表面声波的波长的周期pi，以及布置在 叉指换能器部分，以反射由指数变换器部分在与声表面波的传播方向平行的方向上激发的表面声波。 叉指换能器部分在周期pi内具有三个或更多个电极指，并且反射器具有多个光栅，其周期pr等于在反射器中传播的声表面波的波长的一半。

    FILTER, DEMULTIPLEXER, AND MODULE INCLUDING DEMULTIPLEXER, COMMUNICATION APPARATUS
    7.
    发明申请
    FILTER, DEMULTIPLEXER, AND MODULE INCLUDING DEMULTIPLEXER, COMMUNICATION APPARATUS 有权
    滤波器，解复用器和模块，包括解复用器，通信设备

    公开(公告)号：US20100150075A1

    公开(公告)日：2010-06-17

    申请号：US12709182

    申请日：2010-02-19

    申请人： Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Masanori Ueda

    发明人： Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Masanori Ueda

    IPC分类号： H04W4/00 ,  H03H7/12

    CPC分类号： H03H9/0576 ,  H03H9/725

    摘要： A demultiplexer has a common terminal, a transmission terminal, and a reception terminal, and furthermore includes a transmission filter connected between the common terminal and the transmission terminal, a reception filter connected between the common terminal and the reception terminal, and a phase shift circuit connected in series to the reception filter connected between the common terminal and the reception terminal. A node on the line from the phase shift circuit to the common terminal or the transmission terminal, and a node on the line from the phase shift circuit to the reception terminal are coupled via a reactance. Accordingly, it is possible to fundamentally reduce or eliminate the situation in which transmission signals from the transmission filter arrive at the reception circuit, and improve isolation.

    摘要翻译： 解复用器具有公共端子，发送端子和接收端子，并且还包括连接在公共端子和发送端子之间的发送滤波器，连接在公共端子和接收端子之间的接收滤波器以及相移电路 与连接在公共端子和接收端子之间的接收滤波器串联连接。 从相移电路到共用端子或发送端子的线路上的节点，以及从相移电路到接收端子的线路上的节点经由电抗耦合。 因此，可以从根本上减少或消除来自发送滤波器的发送信号到达接收电路并且改善隔离的情况。

    Surface acoustic wave device with a thicker partial bus bar area and optimal bus bar to electrode tip gap
    8.
    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 filter and duplexer including the same
    9.
    发明授权
    Surface acoustic wave filter and duplexer including the same 有权
    表面声波滤波器和双工器包括相同的

    公开(公告)号：US07154359B2

    公开(公告)日：2006-12-26

    申请号：US10849151

    申请日：2004-05-20

    申请人： Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Masanori Ueda

    发明人： Shogo Inoue ,  Jun Tsutsumi ,  Takashi Matsuda ,  Masanori Ueda

    IPC分类号： H03H9/64 ,  H03H9/72

    CPC分类号： H03H9/6493 ,  H03H7/1708 ,  H03H9/0538 ,  H03H9/14597 ,  H03H9/6426 ,  H03H9/6433 ,  H03H9/6436 ,  H03H9/725

    摘要： A surface acoustic wave filter includes: an input interdigital transducer and an output interdigital transducer that are formed on a piezoelectric substrate; a capacitance that is provided between the input terminal of the input interdigital transducer and the output terminal of the output interdigital transducer; a first common ground terminal that connects the ground terminal of the input interdigital transducer and the ground terminal of the output interdigital transducer; and an inductance that is provided between the first common ground terminal and a ground.

    摘要翻译： 表面声波滤波器包括：形成在压电基板上的输入叉指式换能器和输出叉指式换能器; 提供在输入叉指式换能器的输入端和输出叉指式换能器的输出端之间的电容; 连接输入叉指式换能器的接地端子和输出叉指式换能器的接地端子的第一公共接地端子; 以及设置在第一公共接地端子和地之间的电感。

    Duplexer having two surface acoustic wave filters on one substrate
    10.
    发明授权
    Duplexer having two surface acoustic wave filters on one substrate 有权
    双工器在一个基板上具有两个表面声波滤波器

    公开(公告)号：US07030716B2

    公开(公告)日：2006-04-18

    申请号：US10827337

    申请日：2004-04-20

    申请人： Jun Tsutsumi ,  Shogo Inoue ,  Takashi Matsuda ,  Masanori Ueda

    发明人： Jun Tsutsumi ,  Shogo Inoue ,  Takashi Matsuda ,  Masanori Ueda

    IPC分类号： H03M9/72 ,  H03M9/64

    CPC分类号： H03H9/725 ,  H03H9/0038 ,  H03H9/0576 ,  H03H9/6483 ,  H03H9/72

    摘要： A duplexer includes two surface acoustic wave filters that are formed on one substrate, at least one of the two surface acoustic wave filters being a ladder filter. In this duplexer, the positional difference between the centers in the surface acoustic wave propagating direction of each two neighboring comb-like electrodes among comb-like electrodes that form series-arm resonators in the ladder filter is equal to or smaller than a fourth of the length in the propagating direction of the comb-like electrode having the larger number of pairs of electrode fingers of each two neighboring comb-like electrodes.

    摘要翻译： 双工器包括形成在一个基板上的两个表面声波滤波器，两个声表面波滤波器中的至少一个是梯形滤波器。 在这种双工器中，在梯形滤波器中形成串联臂谐振器的梳状电极中每两个相邻的梳状电极的声表面波传播方向的中心之间的位置差等于或小于 每两个相邻的梳状电极具有较大数量的电极指对的梳状电极的传播方向上的长度。