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22 条记录 (耗时 0.038 秒)

    Surface acoustic wave device
    3.
    发明授权
    Surface acoustic wave device 失效
    表面声波装置

    公开(公告)号：US6037699A

    公开(公告)日：2000-03-14

    申请号：US4778

    申请日：1998-01-09

    申请人： Yasumi Kobayashi ,  Kuniyuki Matsui ,  Yasuhiro Hirao ,  Kosuke Takeuchi ,  Kenichi Shibata ,  Yusuke Takahashi ,  Tateo Kondo ,  Yasutaka Shimizu

    发明人： Yasumi Kobayashi ,  Kuniyuki Matsui ,  Yasuhiro Hirao ,  Kosuke Takeuchi ,  Kenichi Shibata ,  Yusuke Takahashi ,  Tateo Kondo ,  Yasutaka Shimizu

    IPC分类号： H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/25 ,  H01L41/08

    CPC分类号： H03H9/02834 ,  H03H9/02559

    摘要： The invention provides a surface acoustic wave device which has a thin film formed on a surface of a substrate adapted to excite longitudinal wave-type surface acoustic waves, longitudinal wave-type quasi surface acoustic waves or longitudinal wave-type surface skimming bulk waves to thereby give an increased electromechanical coupling coefficient and at the same time minimize the temperature coefficient of delay time. For example, in a surface acoustic wave device having an aluminum thin film formed on a surface of a lithium tantalate substrate, the direction of propagation of longitudinal wave-type quasi surface acoustic waves is (40 deg to 90 deg, 40 deg to 90 deg, 0 deg to 60 deg) as expressed in Eulerian angles and within a range equivalent thereto, and the product of wave number of longitudinal wave-type quasi surface acoustic waves and the thickness of the thin film is at least 1.0, preferably in the range of 1.3 to 2.0. The device provided exhibits higher performance than in the paior art.

    摘要翻译： 本发明提供了一种表面声波装置，其具有形成在适于激发纵波型表面声波，纵波型准表面声波或纵波型表面扫描体波的基板的表面上的薄膜，从而 给出增加的机电耦合系数，同时将延迟时间的温度系数最小化。 例如，在具有形成在钽酸锂基板的表面上的铝薄膜的表面声波装置中，纵波型准表面声波的传播方向为（40度〜90度，40度〜90度） ，0度至60度），并且在与其相当的范围内，纵波型准表面声波的波数与薄膜的厚度的乘积为1.0以上，优选为 为1.3〜2.0。 所提供的装置表现出比在派对艺术中更高的性能。

    Surface acoustic wave filter with range of a frequency difference between resonance frequencies of series and parallel resonators
    4.
    发明授权
    Surface acoustic wave filter with range of a frequency difference between resonance frequencies of series and parallel resonators 失效
    具有串联和并联谐振器的谐振频率之间的频率差范围的表面声波滤波器

    公开(公告)号：US5719537A

    公开(公告)日：1998-02-17

    申请号：US629799

    申请日：1996-04-09

    申请人： Kuniyuki Matsui ,  Yasuhiro Hirao ,  Yasumi Kobayashi ,  Kosuke Takeuchi ,  Kenichi Shibata ,  Masami Ikeda ,  Toshiharu Tanaka ,  Yasutaka Shimizu

    发明人： Kuniyuki Matsui ,  Yasuhiro Hirao ,  Yasumi Kobayashi ,  Kosuke Takeuchi ,  Kenichi Shibata ,  Masami Ikeda ,  Toshiharu Tanaka ,  Yasutaka Shimizu

    IPC分类号： H03H9/64

    CPC分类号： H03H9/6483

    摘要： In a resonator-type surface acoustic wave filter comprising a lithium tantalate substrate, lithium niobate substrate or lithium tetraborate substrate having a cut plane of high velocity, the direction of propagation of surface acoustic waves is set within the range of (40 deg to 90 deg, 40 deg to 90 deg, 0 deg to 60 deg) as expressed in Eulerian angles, and the frequency difference .increment.f between the resonance frequency frs of series resonators and the resonance frequency frp of parallel resonators is set within a predetermined range formulated with the center frequency, the capacitance Cos of the series resonators and the capacitance Cop of the parallel resonators taken as parameters. Optimum ranges of the required design parameters are thus clarified to assure the resonator-type surface acoustic wave filter of higher performance.

    摘要翻译： 在包含钽酸锂基板，铌酸锂基板或具有高速切割面的四硼酸锂基板的谐振器型表面声波滤波器中，声表面波的传播方向设定在（40度〜90度）的范围内 ，40度至90度，0度至60度），串联谐振器的谐振频率frs与并联谐振器的谐振频率frp之间的频率差INCREMENT f设定在与 中心频率，串联谐振器的电容Cos和作为参数的并联谐振器的电容Cop。 因此阐明了所需设计参数的最佳范围，以确保具有更高性能的谐振器型表面声波滤波器。

    High frequency filter including both dielectric and surface acoustic wave resonators
    8.
    发明授权
    High frequency filter including both dielectric and surface acoustic wave resonators 失效
    高频滤波器包括电介质和声表面波谐振器

    公开(公告)号：US5808523A

    公开(公告)日：1998-09-15

    申请号：US963117

    申请日：1997-10-28

    申请人： Yasumi Kobayashi ,  Kuniyuki Matsui ,  Yasuhiro Hirao ,  Kousuke Takeuchi ,  Kenichi Shibata

    发明人： Yasumi Kobayashi ,  Kuniyuki Matsui ,  Yasuhiro Hirao ,  Kousuke Takeuchi ,  Kenichi Shibata

    IPC分类号： H01P1/205 ,  H01P5/08 ,  H03H9/64 ,  H01P1/202

    CPC分类号： H03H9/6483 ,  H01P1/2053

    摘要： A high-frequency filter having series and parallel electrode patterns formed on a mount substrate, surface acoustic wave resonators connected to a signal input/output line of the electrode patterns in series, and coaxial dielectric resonators having respective one input/output terminals connected to the signal input/output line and the other input/output terminals connected to a ground element. In such a composite high-frequency filter, the surface acoustic wave resonators form the resonators in the serial arms while the coaxial dielectric resonators form resonators in the parallel arms. The high-frequency filter can meet all the requirements of enhanced miniaturization, selectivity and power handling.

    摘要翻译： 具有形成在安装基板上的串联和并联电极图案的高频滤波器，连接到串联的电极图案的信号输入/输出线的表面声波谐振器和具有连接到电极图案的相应的一个输入/输出端子的同轴介质谐振器 信号输入/输出线和连接到接地元件的其他输入/输出端子。 在这种复合高频滤波器中，表面声波谐振器在串联臂中形成谐振器，而同轴介质谐振器在并联臂中形成谐振器。 高频滤波器可以满足增强的小型化，选择性和功率处理的所有要求。

    Surface acoustic waver convolver
    9.
    发明授权
    Surface acoustic waver convolver 失效
    表面声波卷积器

    公开(公告)号：US5675207A

    公开(公告)日：1997-10-07

    申请号：US650257

    申请日：1996-05-22

    申请人： Yasuhiro Hirao ,  Kuniyuki Matsui ,  Yasumi Kobayashi ,  Kousuke Takeuchi ,  Kenichi Shibata

    发明人： Yasuhiro Hirao ,  Kuniyuki Matsui ,  Yasumi Kobayashi ,  Kousuke Takeuchi ,  Kenichi Shibata

    IPC分类号： H03H9/145 ,  G06G7/195 ,  H03H9/72 ,  H03H9/76

    CPC分类号： H03H9/6486 ,  G06G7/195 ,  H03H9/76

    摘要： A surface acoustic wave convolver of the present invention includes, on a surface of a piezoelectric substrate, a pair of comb-like surface acoustic wave excitation electrodes 2 and 3, and a center electrode 4. The excitation electrodes 2 and 3 are disposed opposed to each other at a specified interval while the center electrode 4 having a shorter width than a length of the excitation electrodes 2 and 3 is positioned between the electrodes 2 and 3. The center electrode 4 propagates the surface acoustic waves respectively produced by the excitation electrodes 2 and 3 in reverse directions to each other to obtain a convolution output signal. A pair of reflectors 10 are positioned on opposite sides of a region defined between the excitation electrode 2 and one end of the center electrode 4 with a width equivalent to that of the center electrode 4. Also, a pair of reflectors 11 are positioned on opposite sides of a region defined between the excitation electrode 3 and the other end of the center electrode 4 with a width equivalent to that of the center electrode 4.

    摘要翻译： 本发明的声表面波卷积器在压电基板的表面上包括一对梳状表面声波激励电极2和3以及中心电极4.激励电极2和3相对于 彼此以指定的间隔彼此相对，而具有比激励电极2和3的长度更短的宽度的中心电极4位于电极2,3之间。中心电极4传播由激励电极2分别产生的表面声波 和3相反方向，以获得卷积输出信号。 一对反射器10位于激活电极2和中心电极4的一端之间的区域的相对侧上，其宽度与中心电极4的宽度相同。另外，一对反射器11位于相对的位置 在激励电极3和中心电极4的另一端之间限定的区域的宽度相当于中心电极4的宽度。

    Integrated interdigital electrode saw filter with specified distances between input/output electrodes
    10.
    发明授权
    Integrated interdigital electrode saw filter with specified distances between input/output electrodes 有权
    输入/输出电极之间具有特定距离的集成叉指电极锯过滤器

    公开(公告)号：US6034577A

    公开(公告)日：2000-03-07

    申请号：US158071

    申请日：1998-09-22

    申请人： Kuniyuki Matsui ,  Yasuhiro Hirao ,  Yasumi Kobayashi ,  Kousuke Takeuchi ,  Kenichi Shibata

    发明人： Kuniyuki Matsui ,  Yasuhiro Hirao ,  Yasumi Kobayashi ,  Kousuke Takeuchi ,  Kenichi Shibata

    IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64

    CPC分类号： H03H9/6466 ,  H03H9/14552 ,  H03H9/25 ,  H03H9/6473 ,  H03H9/6483

    摘要： A surface acoustic wave filter having one or a plurality of filter functional units each comprising a series arm resonator and a parallel arm resonator. Each of the series arm resonator and the parallel arm resonator is constituted by an interdigital transducer and grating reflectors formed on a piezoelectric substrate composed of 64.degree.-rotated Y-cut X-propagating LiNbO.sub.3. The series arm resonator is constructed by electrically connecting a one-port resonator in series with a signal line, and the parallel arm resonator is constructed by electrically connecting a one-port resonator in parallel with the signal line. In the interdigital transducer in the series arm resonator and/or the parallel arm resonator, one or more sets of electrode fingers continuously adjacent to each other are formed.

    摘要翻译： 具有一个或多个滤波器功能单元的表面声波滤波器，每个滤波器功能单元均包括串联臂谐振器和并联臂谐振器。 串联臂谐振器和并联臂谐振器中的每一个由形成在由64°旋转Y切X传播LiNbO 3组成的压电基板上的叉指式换能器和光栅反射器构成。 串联臂谐振器通过将单端口谐振器与信号线串联电连接而构成，并联臂谐振器通过将一端口谐振器与信号线并联电连接而构成。 在串联臂谐振器和/或并联臂谐振器中的叉指式换能器中，形成连续相邻的一组或多组电极指。