Resonator, filter and fabrication of resonator
    32.
    发明授权
    Resonator, filter and fabrication of resonator 有权
    谐振器的谐振器,滤波器和制造

    公开(公告)号:US07498717B2

    公开(公告)日:2009-03-03

    申请号:US11092979

    申请日:2005-03-30

    IPC分类号: H01L41/09

    摘要: A resonator includes a piezoelectric thin-film provided on a main surface of a substrate, a first electrode film provided on a first surface of the piezoelectric thin-film, a second electrode film provided on a second surface of the piezoelectric thin-film, a frequency adjustment film provided on one of the first and second electrode films, the frequency adjustment film comprising a film laminate including a first adjustment film provided on said one of the first and second electrode films, and a second adjustment film provided on the first adjustment film. The first adjustment film is used for Δf adjustment, and the second adjustment film is used for correcting frequency deviations generated in the filter manufacturing process. Thus, it is possible to accurately control the center frequency of the filter in which the multiple resonators are connected.

    摘要翻译: 谐振器包括设置在基板的主表面上的压电薄膜,设置在压电薄膜的第一表面上的第一电极膜,设置在压电薄膜的第二表面上的第二电极膜, 频率调节膜,其设置在所述第一和第二电极膜中的一个上,所述频率调节膜包括膜层叠体,所述膜层叠体包括设置在所述第一和第二电极膜中的所述一个上的第一调节膜,以及设置在所述第一调节膜上的第二调节膜 。 第一调节膜用于Deltaf调节,第二调节膜用于校正过滤器制造过程中产生的频率偏差。 因此,可以精确地控制多个谐振器连接的滤波器的中心频率。

    Filter and duplexer
    35.
    发明授权
    Filter and duplexer 有权
    过滤器和双工器

    公开(公告)号:US07786649B2

    公开(公告)日:2010-08-31

    申请号:US11790530

    申请日:2007-04-26

    IPC分类号: H01L41/04

    CPC分类号: H03H9/564 H03H9/568

    摘要: A filter includes piezoelectric thin-film resonators having a substrate, a lower electrode supported by the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. At least one of the piezoelectric thin-film resonators has a portion in which the upper electrode overlaps the lower electrode across the piezoelectric film. The above portion has a shape different from shapes of corresponding portions of other piezoelectric thin-film resonators, so that a spurious component in the above at least one of the piezoelectric thin-film resonators occur at a frequency different from frequencies of spurious components that occur in the other piezoelectric thin-film resonators.

    摘要翻译: 滤波器包括具有基板,由基板支撑的下电极,设置在下电极上的压电膜和设置在压电膜上的上电极的压电薄膜谐振器。 压电薄膜谐振器中的至少一个具有上电极跨越压电膜与下电极重叠的部分。 上述部分具有与其它压电薄膜谐振器的相应部分的形状不同的形状,使得上述至少一个压电薄膜谐振器中的杂散分量以与发生的杂散分量的频率不同的频率出现 在其他压电薄膜谐振器中。

    Filter and duplexer
    39.
    发明申请
    Filter and duplexer 有权
    过滤器和双工器

    公开(公告)号:US20070252662A1

    公开(公告)日:2007-11-01

    申请号:US11790530

    申请日:2007-04-26

    IPC分类号: H03H9/70 H03H9/58

    CPC分类号: H03H9/564 H03H9/568

    摘要: A filter includes piezoelectric thin-film resonators having a substrate, a lower electrode supported by the substrate, a piezoelectric film provided on the lower electrode, and an upper electrode provided on the piezoelectric film. At least one of the piezoelectric thin-film resonators has a portion in which the upper electrode overlaps the lower electrode across the piezoelectric film. The above portion has a shape different from shapes of corresponding portions of other piezoelectric thin-film resonators, so that a spurious component in the above at least one of the piezoelectric thin-film resonators occur at a frequency different from frequencies of spurious components that occur in the other piezoelectric thin-film resonators.

    摘要翻译: 滤波器包括具有基板,由基板支撑的下电极,设置在下电极上的压电膜和设置在压电膜上的上电极的压电薄膜谐振器。 压电薄膜谐振器中的至少一个具有上电极跨越压电膜与下电极重叠的部分。 上述部分具有与其它压电薄膜谐振器的相应部分的形状不同的形状,使得上述至少一个压电薄膜谐振器中的杂散分量以与发生的杂散分量的频率不同的频率出现 在其他压电薄膜谐振器中。