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    Filter having multiple piezoelectric thin-film resonators
    4.
    发明申请
    Filter having multiple piezoelectric thin-film resonators 有权
    具有多个压电薄膜谐振器的滤波器

    公开(公告)号：US20070279154A1

    公开(公告)日：2007-12-06

    申请号：US11806129

    申请日：2007-05-30

    申请人： Shinji Taniguchi ,  Tsuyoshi Yokoyama ,  Motoaki Hara ,  Takeshi Sakashita ,  Jun Tsutsumi ,  Masafumi Iwaki ,  Tokihiro Nishihara ,  Masanori Ueda ,  Hisanori Ehara

    发明人： Shinji Taniguchi ,  Tsuyoshi Yokoyama ,  Motoaki Hara ,  Takeshi Sakashita ,  Jun Tsutsumi ,  Masafumi Iwaki ,  Tokihiro Nishihara ,  Masanori Ueda ,  Hisanori Ehara

    IPC分类号： H03H9/58 ,  H03H9/54

    CPC分类号： H03H9/605 ,  H03H3/02 ,  H03H9/02118 ,  H03H9/02141 ,  H03H9/132 ,  H03H9/173 ,  H03H9/174 ,  H03H2003/021

    摘要： A filter includes multiple piezoelectric thin-film resonators each having a substrate, a lower electrode formed on the substrate, a piezoelectric film formed on the lower electrode, and an upper electrode provided on the piezoelectric film so that the upper electrode and the lower electrode face each other across the piezoelectric film. The multiple piezoelectric thin-film resonators include a first resonator in which at least a part of an outer curved portion of the piezoelectric film of the first resonator is located further out than an outer curved portion of a region in which the upper electrode and the lower electrode face each other across the piezoelectric film. The multiple piezoelectric thin-film resonators includes a second resonator in which at least a part of an outer curved portion of the piezoelectric film of the second resonator substantially coincides with an outer curved portion of a region in which the upper electrode and the lower electrode face each other across the piezoelectric film or is further in than the outer curved portion of the region.

    摘要翻译： 滤波器包括多个压电薄膜谐振器，每个压电薄膜谐振器均具有基板，形成在基板上的下电极，形成在下电极上的压电薄膜和设置在压电薄膜上的上电极，使得上电极和下电极面 彼此横跨压电薄膜。 多个压电薄膜谐振器包括：第一谐振器，其中第一谐振器的压电膜的外弯曲部分的至少一部分位于比上电极和下电极的区域的外弯曲部分更远的位置 电极彼此面对压电薄膜。 多个压电薄膜谐振器包括第二谐振器，其中第二谐振器的压电膜的外部弯曲部分的至少一部分基本上与上电极和下电极面的区域的外弯曲部分重合 彼此隔着压电膜，或者比该区域的外部弯曲部分进一步。

    Filter having multiple piezoelectric thin-film resonators
    5.
    发明授权
    Filter having multiple piezoelectric thin-film resonators 有权
    具有多个压电薄膜谐振器的滤波器

    公开(公告)号：US07545077B2

    公开(公告)日：2009-06-09

    申请号：US11806129

    申请日：2007-05-30

    申请人： Shinji Taniguchi ,  Tsuyoshi Yokoyama ,  Motoaki Hara ,  Takeshi Sakashita ,  Jun Tsutsumi ,  Masafumi Iwaki ,  Tokihiro Nishihara ,  Masanori Ueda ,  Hisanori Ehara

    发明人： Shinji Taniguchi ,  Tsuyoshi Yokoyama ,  Motoaki Hara ,  Takeshi Sakashita ,  Jun Tsutsumi ,  Masafumi Iwaki ,  Tokihiro Nishihara ,  Masanori Ueda ,  Hisanori Ehara

    IPC分类号： H03H9/00 ,  H01L41/08

    CPC分类号： H03H9/605 ,  H03H3/02 ,  H03H9/02118 ,  H03H9/02141 ,  H03H9/132 ,  H03H9/173 ,  H03H9/174 ,  H03H2003/021

    摘要： A filter includes multiple piezoelectric thin-film resonators each having a substrate, a lower electrode formed on the substrate, a piezoelectric film formed on the lower electrode, and an upper electrode provided on the piezoelectric film so that the upper electrode and the lower electrode face each other across the piezoelectric film. The multiple piezoelectric thin-film resonators include a first resonator in which at least a part of an outer curved portion of the piezoelectric film of the first resonator is located further out than an outer curved portion of a region in which the upper electrode and the lower electrode face each other across the piezoelectric film. The multiple piezoelectric thin-film resonators includes a second resonator in which at least a part of an outer curved portion of the piezoelectric film of the second resonator substantially coincides with an outer curved portion of a region in which the upper electrode and the lower electrode face each other across the piezoelectric film or is further in than the outer curved portion of the region.

    摘要翻译： 滤波器包括多个压电薄膜谐振器，每个压电薄膜谐振器均具有基板，形成在基板上的下电极，形成在下电极上的压电薄膜和设置在压电薄膜上的上电极，使得上电极和下电极面 彼此横跨压电薄膜。 多个压电薄膜谐振器包括：第一谐振器，其中第一谐振器的压电膜的外弯曲部分的至少一部分位于比上电极和下电极的区域的外弯曲部分更远的位置 电极彼此面对压电薄膜。 多个压电薄膜谐振器包括第二谐振器，其中第二谐振器的压电膜的外部弯曲部分的至少一部分基本上与上电极和下电极面的区域的外弯曲部分重合 彼此隔着压电膜，或者比该区域的外部弯曲部分进一步。

    Surface acoustic wave filter
    6.
    发明授权
    Surface acoustic wave filter 有权
    表面声波滤波器

    公开(公告)号：US06861925B2

    公开(公告)日：2005-03-01

    申请号：US10273888

    申请日：2002-10-21

    申请人： Wataru Ohashi ,  Hisanori Ehara ,  Tomokazu Komazaki

    发明人： Wataru Ohashi ,  Hisanori Ehara ,  Tomokazu Komazaki

    IPC分类号： H03H9/72 ,  H03H9/64 ,  H03H9/73

    CPC分类号： H03H9/6483

    摘要： A surface acoustic wave filter includes an antenna terminal, an antenna, a transmitting filter, a branching line and a receiving filter. The antenna is coupled to the antenna terminal. The transmitting filter is coupled to the antenna terminal. The transmitting filter receives an electrical power. The branching line is coupled to the antenna terminal. The branching line has a first length that is longer than λ/4 length so that the electrical power received by the transmitting filter when the antenna terminal is opened is smaller than when the antenna terminal is terminated, wherein λ is a wave length of a center frequency of transmitted and received bands of the surface acoustic wave filter. The receiving filter is coupled to the branching line.

    摘要翻译： 表面声波滤波器包括天线端子，天线，发射滤波器，分支线路和接收滤波器。 天线耦合到天线终端。 发射滤波器耦合到天线端子。 发射滤波器接收电力。 分支线耦合到天线端子。 分支线具有长于λ/ 4长度的第一长度，使得当天线端子打开时由发射滤波器接收的电力小于天线端子终止时的电力，其中λ是中心的波长 表面声波滤波器的发射和接收频带的频率。 接收滤波器耦合到分支线。

    Saw resonator filter with bridged-T configuration
    7.
    发明授权
    Saw resonator filter with bridged-T configuration 失效
    具有桥接T配置的锯片谐振器滤波器

    公开(公告)号：US06377140B1

    公开(公告)日：2002-04-23

    申请号：US09526490

    申请日：2000-03-15

    申请人： Hisanori Ehara ,  Hajime Shimamura ,  Yoshiaki Fujita ,  Tomokazu Komazaki

    发明人： Hisanori Ehara ,  Hajime Shimamura ,  Yoshiaki Fujita ,  Tomokazu Komazaki

    IPC分类号： H03H964

    CPC分类号： H03H9/6483

    摘要： A surface-acoustic-wave filter has a pair of series-arm surface-acoustic-wave resonators and a shunt-arm surface-acoustic-wave resonator coupled in a T configuration. An additional bridging surface-acoustic-wave resonator is coupled between the input and output terminals, in parallel with the series arm. The bridging surface-acoustic-wave resonator provides enhanced attenuation of spurious signals at multiples of the passband frequency.

    摘要翻译： 表面声波滤波器具有一对串联臂表面声波谐振器和以T构型耦合的分流臂表面声波谐振器。 另外的桥接表面声波谐振器与串联臂并联在输入端和输出端之间。 桥接表面声波谐振器在通带频率的倍数提供杂散信号的增强衰减。

    TRANSMITTING FILTER INCLUDING SAW RESONATORS
    8.
    发明申请
    TRANSMITTING FILTER INCLUDING SAW RESONATORS 有权
    发射滤波器，包括SAW谐振器

    公开(公告)号：US20050134407A1

    公开(公告)日：2005-06-23

    申请号：US10983788

    申请日：2004-11-09

    申请人： Kenichi Anasako ,  Yoshiaki Fujita ,  Hisanori Ehara ,  Tomokazu Komazaki

    发明人： Kenichi Anasako ,  Yoshiaki Fujita ,  Hisanori Ehara ,  Tomokazu Komazaki

    IPC分类号： H03H9/72 ,  B05D3/06 ,  B05D7/24 ,  C23C16/44 ,  C23C16/455 ,  C23C16/48 ,  H03H9/64

    CPC分类号： H03H9/6483 ,  B05D1/60 ,  B05D3/061 ,  C23C16/45504 ,  C23C16/45591 ,  C23C16/482

    摘要： A surface acoustic wave filter includes an antenna terminal, a transmitting filter and a variable branching line both of which are coupled to the antenna terminal and a receiving filter coupled to the variable branching line. The transmitting filter has a first end series-arm SAW resonator, a second end series-arm SAW resonator, a middle series-arm SAW resonator coupled between the first and second end series-arm SAW resonators and parallel-arm SAW resonators. Each of the first and second end series-arm SAW resonator has a first resonance frequency. The middle series-arm SAW resonator has a second resonance frequency that is higher than the first resonance frequency.

    摘要翻译： 表面声波滤波器包括天线端子，发射滤波器和可变分支线，两者都耦合到天线端子和耦合到可变分支线的接收滤波器。 发射滤波器具有第一端串联臂SAW谐振器，第二端串联臂SAW谐振器，耦合在第一和第二端串联SAW谐振器和并联SAW谐振器之间的中间串联SAW谐振器。 第一和第二端串联SAW谐振器中的每一个具有第一谐振频率。 中间串联SAW谐振器具有高于第一谐振频率的第二谐振频率。

    Differential surface acoustic wave filter
    10.
    发明授权
    Differential surface acoustic wave filter 有权
    差分声表面波滤波器

    公开(公告)号：US06424239B1

    公开(公告)日：2002-07-23

    申请号：US09580218

    申请日：2000-05-26

    申请人： Hisanori Ehara ,  Kazushige Noguchi ,  Yoshikazu Kihara

    发明人： Hisanori Ehara ,  Kazushige Noguchi ,  Yoshikazu Kihara

    IPC分类号： H03H964

    CPC分类号： H03H9/0042

    摘要： In a differential surface acoustic wave resonator, when an unbalanced electric signal is inputted between an input terminal 301 and an output terminal connected to a ground potential, this electric signal is inputted to two-terminal-pair surface acoustic wave resonators 351 and 352. The electric signal inputted to the two-terminal-pair surface acoustic wave resonator 351 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted to a two-terminal-pair surface acoustic wave resonator 353. The electric signal inputted to the two-terminal-pair surface acoustic wave resonator 353 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted from an output terminal 302 of the differential surface acoustic wave filter as a balanced signal. On the other hand, the electric signal inputted to the two-terminal-pair surface acoustic wave resonator 352 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted to a two-terminal-pair surface acoustic wave resonator 354. The electric signal inputted to the two-terminal-pair surface acoustic wave resonator 354 is converted into a surface acoustic wave, and thereafter it is again converted into an electric signal to be outputted from an output terminal 303 of the differential surface acoustic wave filter as a balanced signal. Here, in the respective two-terminal-pair surface acoustic wave resonators 351 to 354, the phase of the electric signal to be inputted is substantially 180° different from that of the electric signal to be outputted. The balanced signals having the same phase and the same amplitude are outputted from the two output terminals of the differential surface acoustic wave filter.

    摘要翻译： 在差分表面声波谐振器中，当在输入端子301和连接到地电位的输出端子之间输入不平衡电信号时，该电信号被输入到两端对声表面波谐振器351和352。 输入到两端对声表面波谐振器351的电信号被转换为表面声波，然后再次转换为电信号以输出到两端对声表面波谐振器353. 输入到两端对声表面波谐振器353的电信号被转换为表面声波，然后再次转换为从差动表面声波滤波器的输出端子302输出的电信号作为 平衡信号。 另一方面，输入到两端对声表面波谐振器352的电信号被转换为表面声波，然后再次转换为电信号以输出到两端对表面 输入到两端对声表面波谐振器354的电信号被转换成表面声波，之后再次转换为从差分的输出端子303输出的电信号 表面声波滤波器作为平衡信号。 这里，在各个双端子对表面声波谐振器351〜354中，输入的电信号的相位与输出的电信号的相位大致相差180°。 从差动表面声波滤波器的两个输出端子输出具有相同相位和幅度相同的平衡信号。