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    • 21. 发明授权
    • Duplexer incorporating thin-film bulk acoustic resonators (FBARs)
    • 掺入薄膜体声共振器(FBAR)的双工器
    • US06262637B1
    • 2001-07-17
    • US09324618
    • 1999-06-02
    • Paul D. BradleyJohn D. Larson, IIIRichard C. Ruby
    • Paul D. BradleyJohn D. Larson, IIIRichard C. Ruby
    • H03H954
    • H03H9/568H03H9/706
    • An FBAR-based duplexer that comprises a first port, a second port, a third port, a first band-pass filter connected between the first port and the third port and a series circuit connected between the second port and the third port. The first band-pass filter includes a first ladder circuit having shunt and series elements. Each of the elements of the first ladder circuit comprises a film bulk acoustic resonator (FBAR). The series circuit includes a 90° phase shifter in series with a second band-pass filter. The second band-pass filter includes a second ladder circuit having shunt and series elements. Each of the elements of the second ladder circuit comprises a film bulk acoustic resonator. A band-pass filter comprising shunt elements and series elements in which the series elements and the shunt elements are connected to form a ladder circuit, and each of the elements includes a film bulk acoustic resonator (FBAR).
    • 一种基于FBAR的双工器,包括连接在第一端口和第三端口之间的第一端口,第二端口,第三端口,第一带通滤波器以及连接在第二端口和第三端口之间的串联电路。 第一带通滤波器包括具有并联和串联元件的第一梯形电路。 第一梯形电路的每个元件包括膜体声波谐振器(FBAR)。 串联电路包括与第二带通滤波器串联的90°移相器。 第二带通滤波器包括具有分路和串联元件的第二梯形电路。 第二梯形电路的每个元件包括膜体声波谐振器。 一种带通滤波器,包括并联元件和串联元件,其中串联元件和分流元件连接以形成梯形电路,并且每个元件包括膜体声波谐振器(FBAR)。
    • 28. 发明授权
    • Method of making an acoustically coupled transformer
    • 制造声耦合变压器的方法
    • US07367095B2
    • 2008-05-06
    • US11404403
    • 2006-04-14
    • John D. Larson, IIIYury Oshmyansky
    • John D. Larson, IIIYury Oshmyansky
    • H04R17/00H01L41/00H03H9/02
    • H03H9/605H03H9/132H03H9/584H03H9/587Y10T29/42Y10T29/4902Y10T29/49128Y10T29/49155
    • Embodiments of an acoustically-coupled transformer have a first stacked bulk acoustic resonator (SBAR) and a second SBAR. Each of the SBARs has a lower film bulk acoustic resonator (FBAR) and an upper FBAR, and an acoustic decoupler between the FBARs. The upper FBAR is stacked atop the lower FBAR. Each FBAR has opposed planar electrodes and a piezoelectric element between the electrodes. The piezoelectric element is characterized by a c-axis. The c-axes of the piezoelectric elements of the lower FBARs are opposite in direction, and the c-axes of the piezoelectric elements of the upper FBARs are opposite in direction. The transformer additionally has a first electrical circuit connecting the lower FBAR of the first SBAR to the lower FBAR of the second SBAR, and a second electrical circuit connecting the upper FBAR of the first SBAR to the upper FBARs of the second SBAR.
    • 声耦合变压器的实施例具有第一层叠体声波谐振器(SBAR)和第二SBAR。 每个SBAR具有较低的膜体声波谐振器(FBAR)和上部FBAR,以及FBAR之间的声学​​解耦器。 上部FBAR堆叠在较低FBAR的顶部。 每个FBAR具有相对的平面电极和电极之间的压电元件。 压电元件的特征在于c轴。 下FBAR的压电元件的c轴方向相反,上FBAR的压电元件的c轴方向相反。 变压器还具有将第一SBAR的下FBAR连接到第二SBAR的下FBAR的第一电路和将第一SBAR的上FBAR连接到第二SBAR的上FBAR的第二电路。
    • 29. 发明授权
    • Film acoustically-coupled transformers with two reverse c-axis piezoelectric elements
    • 具有两个反向c轴压电元件的薄膜声耦合变压器
    • US07091649B2
    • 2006-08-15
    • US10836663
    • 2004-04-29
    • John D. Larson, IIIYury Oshmyansky
    • John D. Larson, IIIYury Oshmyansky
    • H01L41/08
    • H03H9/605H01L2224/48091H01L2224/49175H03H9/132H03H9/584H03H9/587Y10T29/42H01L2924/00014
    • Embodiments of an acoustically-coupled transformer have a first stacked bulk acoustic resonator (SBAR) and a second SBAR. Each of the SBARs has a lower film bulk acoustic resonator (FBAR) and an upper FBAR, and an acoustic decoupler between the FBARs. The upper FBAR is stacked atop the lower FBAR. Each FBAR has opposed planar electrodes and a piezoelectric element between the electrodes. The piezoelectric element is characterized by a c-axis. The c-axes of the piezoelectric elements of the lower FBARs are opposite in direction, and the c-axes of the piezoelectric elements of the upper FBARs are opposite in direction. The transformer additionally has a first electrical circuit connecting the lower FBAR of the first SBAR to the lower FBAR of the second SBAR, and a second electrical circuit connecting the upper FBAR of the first SBAR to the upper FBARs of the second SBAR.
    • 声耦合变压器的实施例具有第一层叠体声波谐振器(SBAR)和第二SBAR。 每个SBAR具有较低的膜体声波谐振器(FBAR)和上部FBAR,以及FBAR之间的声学​​解耦器。 上部FBAR堆叠在较低FBAR的顶部。 每个FBAR具有相对的平面电极和电极之间的压电元件。 压电元件的特征在于c轴。 下FBAR的压电元件的c轴方向相反,上FBAR的压电元件的c轴方向相反。 变压器还具有将第一SBAR的下FBAR连接到第二SBAR的下FBAR的第一电路和将第一SBAR的上FBAR连接到第二SBAR的上FBAR的第二电路。