ACOUSTICALLY COUPLED RESONATORS HAVING RESONANT TRANSMISSION MINIMA
    1.
    发明申请
    ACOUSTICALLY COUPLED RESONATORS HAVING RESONANT TRANSMISSION MINIMA 审中-公开
    具有共振传输MINIMA的高音耦合谐振器

    公开(公告)号:US20090079520A1

    公开(公告)日:2009-03-26

    申请号:US11858237

    申请日:2007-09-20

    IPC分类号: H03H9/58

    CPC分类号: H03H9/60 H03H9/584

    摘要: A bandpass filter includes input and output terminals, first and second acoustic resonators, and an acoustic coupling layer. The first acoustic resonator includes first and second electrodes, and a piezoelectric layer between the first and second electrodes. The first electrode of the first acoustic resonator is connected to the input terminal. The second acoustic resonator includes first and second electrodes, and a piezoelectric layer between the first and second electrodes. The acoustic coupling is provided between the second electrode of the first acoustic resonator and the first electrode of the second acoustic resonator. The output terminal is connected to the second electrode of the second acoustic resonator. A capacitor extends between the input terminal and the output terminal. The filter's frequency response includes at least two transmission zeros.

    摘要翻译: 带通滤波器包括输入和输出端子,第一和第二声谐振器以及声耦合层。 第一声​​谐振器包括第一和第二电极,以及在第一和第二电极之间的压电层。 第一声​​谐振器的第一电极连接到输入端。 第二声谐振器包括第一和第二电极,以及在第一和第二电极之间的压电层。 声耦合设置在第一声谐振器的第二电极和第二声谐振器的第一电极之间。 输出端子连接到第二声谐振器的第二电极。 电容器在输入端子和输出端子之间延伸。 滤波器的频率响应包括至少两个传输零点。

    Impedance transforming bulk acoustic wave baluns
    3.
    发明授权
    Impedance transforming bulk acoustic wave baluns 有权
    阻抗变换体积声波平衡不平衡变压器

    公开(公告)号:US07612636B2

    公开(公告)日:2009-11-03

    申请号:US11343117

    申请日:2006-01-30

    IPC分类号: H03H9/54 H03H9/60

    摘要: A bulk acoustic wave device includes an acoustic decoupler between first and second film bulk acoustic resonators (FBARs). The first FBAR is resonant at a resonant frequency of the device and includes first and second planar electrodes abutting opposite sides of a first resonator volume free of any intervening electrodes and containing piezoelectric material disposed for acoustic vibrations parallel to a propagation axis normal to the first and second electrodes. The first FBAR has a first electrical impedance parallel to the propagation axis. The second FBAR is resonant at the resonant frequency and includes third and fourth planar electrodes abutting opposite sides of a second resonator volume free of any intervening electrodes and containing piezoelectric material disposed for acoustic vibrations parallel to the propagation axis. The second FBAR has a second electrical impedance parallel to the propagation axis and different from the first electrical impedance.

    摘要翻译: 体声波器件包括第一和第二膜体声波谐振器(FBAR)之间的声耦合器。 第一FBAR以该器件的谐振频率谐振,并且包括第一和第二平面电极,该第一和第二平面电极邻接第一谐振器体的相对侧,第一谐振器体积不含任何中间电极,并且包含压电材料,该压电材料设置为平行于垂直于第一谐振器的传播轴的声振动, 第二电极。 第一个FBAR具有平行于传播轴的第一个电阻抗。 第二FBAR在谐振频率下谐振,并且包括第三和第四平面电极,其邻接没有任何中间电极的第二谐振器体的相对侧,并且包含被设置用于平行于传播轴的声学振动的压电材料。 第二FBAR具有平行于传播轴线并且不同于第一电阻抗的第二电阻抗。

    Impedance transforming bulk acoustic wave baluns
    5.
    发明申请
    Impedance transforming bulk acoustic wave baluns 有权
    阻抗变换体积声波平衡不平衡变压器

    公开(公告)号:US20070176710A1

    公开(公告)日:2007-08-02

    申请号:US11343117

    申请日:2006-01-30

    IPC分类号: H03H9/56

    摘要: A bulk acoustic wave device includes an acoustic decoupler between first and second film bulk acoustic resonators (FBARs). The first FBAR is resonant at a resonant frequency of the device and includes first and second planar electrodes abutting opposite sides of a first resonator volume free of any intervening electrodes and containing piezoelectric material disposed for acoustic vibrations parallel to a propagation axis normal to the first and second electrodes. The first FBAR has a first electrical impedance parallel to the propagation axis. The second FBAR is resonant at the resonant frequency and includes third and fourth planar electrodes abutting opposite sides of a second resonator volume free of any intervening electrodes and containing piezoelectric material disposed for acoustic vibrations parallel to the propagation axis. The second FBAR has a second electrical impedance parallel to the propagation axis and different from the first electrical impedance.

    摘要翻译: 体声波器件包括第一和第二膜体声波谐振器(FBAR)之间的声耦合器。 第一FBAR以该器件的谐振频率谐振,并且包括第一和第二平面电极,该第一和第二平面电极邻接第一谐振器体的相对侧,第一谐振器体积不含任何中间电极,并且包含压电材料,该压电材料设置为平行于垂直于第一谐振器的传播轴的声振动, 第二电极。 第一个FBAR具有平行于传播轴的第一个电阻抗。 第二FBAR在谐振频率下谐振,并且包括第三和第四平面电极,其邻接没有任何中间电极的第二谐振器体的相对侧,并且包含被设置用于平行于传播轴的声学振动的压电材料。 第二FBAR具有平行于传播轴线并且不同于第一电阻抗的第二电阻抗。

    Impedance matching and parasitic capacitor resonance of FBAR resonators and coupled filters
    6.
    发明申请
    Impedance matching and parasitic capacitor resonance of FBAR resonators and coupled filters 失效
    FBAR谐振器和耦合滤波器的阻抗匹配和寄生电容谐振

    公开(公告)号:US20070080759A1

    公开(公告)日:2007-04-12

    申请号:US11246939

    申请日:2005-10-06

    IPC分类号: H03H9/56

    CPC分类号: H03H9/584 H03H9/0095 H03H9/60

    摘要: A film acoustically-coupled transformer (FACT) has a first and a second stacked bulk acoustic resonator (SBAR 1, SBAR 2). Each SBAR has a stacked pair of film bulk acoustic resonators (FBARs) and an acoustic decoupler between the FBARs. Each FBAR has opposed planar electrodes and a layer of piezoelectric material between the electrodes. A first electrical circuit connecting one of the FBARs of SBAR1 to one of the FBARs of SBAR 2 and a second electrical circuit connecting the other of the FBARs of SBAR 1 to the other of the FBARs of SBAR 2. The first electrical circuit connects the respective FBARs in parallel and second electrical circuit connects the respective FBARs in series. A shunt inductor is included from the reception path to ground.

    摘要翻译: 薄膜声耦合变压器(FACT)具有第一和第二堆叠体声波谐振器(SBAR 1,SBAR 2)。 每个SBAR具有堆叠的一对薄膜体声共振器(FBAR)和FBAR之间的声学​​解耦器。 每个FBAR具有相对的平面电极和电极之间的压电材料层。 将SBAR 1中的一个FBAR连接到SBAR 2中的一个FBAR的第一个电路和将SBAR 1的另一个FBAR连接到SBAR 2的另一个FBAR的第二个电路。第一个电路将 并联的各个FBAR和第二电路将各个FBAR串联连接。 从接收路径到地面包括并联电感器。

    General matching network for acoustic wave filters and acoustic resonators
    8.
    发明申请
    General matching network for acoustic wave filters and acoustic resonators 有权
    声波滤波器和声谐振器的通用匹配网络

    公开(公告)号:US20080042778A1

    公开(公告)日:2008-02-21

    申请号:US11505453

    申请日:2006-08-17

    IPC分类号: H03H9/70

    CPC分类号: H03H9/706 H03H9/0004

    摘要: A method and circuit matches a device to n filters, wherein each filter is a SAW filter, BAW filter, or FBAR filter. The method and system: (a) provide an inductor or transmission line connected between a common terminal and ground; (b) provide a plurality of capacitance values (C1m, C2m, . . . , Cnm) each corresponding to one of the n filters; and (c) for each of the n filters, directly connect a first terminal of the filter to either: (1) the common terminal, or (2) a first terminal of a corresponding capacitor having the correspondence capacitance value calculated in step (b), where a second terminal of the corresponding capacitor is directly connected to the common terminal.

    摘要翻译: 方法和电路将器件与n个滤波器相匹配,其中每个滤波器是SAW滤波器,BAW滤波器或FBAR滤波器。 方法和系统:(a)提供连接在公共端子和地之间的电感器或传输线; (b)提供多个电容值(C 1m 2,C 2 m,...,C nm),每个对应于 n过滤器 和(c)对于n个滤波器中的每一个,直接将滤波器的第一端连接到:(1)公共端子,或者(2)具有在步骤(b)中计算的对应电容值的相应电容器的第一端子 ),其中相应电容器的第二端子直接连接到公共端子。

    Bulk acoustic resonator electrical impedance transformers
    9.
    发明授权
    Bulk acoustic resonator electrical impedance transformers 有权
    体积谐振器电阻抗变压器

    公开(公告)号:US07855618B2

    公开(公告)日:2010-12-21

    申请号:US12112633

    申请日:2008-04-30

    IPC分类号: H03H9/00 H03H9/15

    摘要: An electrical impedance transformer comprises a first film bulk acoustic resonator (FBAR), having a first electrical impedance and a first resonance frequency. The electrical impedance transformer also comprises: a second FBAR, having a second electrical impedance and a second resonance frequency, and being disposed over the first FBAR. The electrical impedance transformer also includes a decoupling layer disposed between the first and the second FBARs. The first electrical impedance differs from the second electrical impedance and the first and second resonance frequencies are substantially the same.

    摘要翻译: 电阻抗变压器包括具有第一电阻抗和第一谐振频率的第一膜体声波谐振器(FBAR)。 电阻抗变压器还包括:第二FBAR,具有第二电阻抗和第二谐振频率,并且设置在第一FBAR上。 电阻抗变压器还包括设置在第一和第二FBAR之间的去耦层。 第一电阻抗与第二电阻抗不同,第一和第二谐振频率基本上相同。

    BULK ACOUSTIC WAVE (BAW) FILTER HAVING REDUCED SECOND HARMONIC GENERATION AND METHOD OF REDUCING SECOND HARMONIC GENERATION IN A BAW FILTER
    10.
    发明申请
    BULK ACOUSTIC WAVE (BAW) FILTER HAVING REDUCED SECOND HARMONIC GENERATION AND METHOD OF REDUCING SECOND HARMONIC GENERATION IN A BAW FILTER 有权
    具有减少二次谐波产生的大容量声波(BAW)滤波器和减少BAW滤波器中第二谐波产生的方法

    公开(公告)号:US20080252398A1

    公开(公告)日:2008-10-16

    申请号:US11735768

    申请日:2007-04-16

    IPC分类号: H03H9/58

    CPC分类号: H03H9/60 H03H9/581 H03H9/605

    摘要: In a filter having a half-ladder structure comprising an alternating series of series branches and shunt branches, including a signal input and a signal output related to a common ground. at least one series branch or one parallel branch of the filter is configured as a BAW device comprising a first BAW resonator and a second BAW resonator connected either antiparallel or antiseries. The second harmonic emission generated by the first BAW resonator substantially cancels the second harmonic emission of the second BAW resonator and the second harmonic emission of at least one other series branch or one other parallel branch of the filter. By this method, the filter's second harmonic emissions are reduced.

    摘要翻译: 在具有半梯形结构的滤波器中,该半梯形结构包括交替串联分支和分流分支,包括信号输入和与公共地相关的信号输出。 滤波器的至少一个串联分支或一个并联支路被配置为包括第一BAW谐振器和连接反平行或反电容的第二BAW谐振器的BAW器件。 由第一BAW谐振器产生的二次谐波发射器基本上抵消第二BAW谐振器的二次谐波发射和至少一个其它串联支路或滤波器的另一个并联支路的二次谐波发射。 通过这种方法,减少了滤波器的二次谐波发射。