公开(公告)号：US20100327995A1

公开(公告)日：2010-12-30

申请号：US12827875

申请日：2010-06-30

Applicant: Alexandre Reinhardt ,  Issiaka Kone

Inventor： Alexandre Reinhardt ,  Issiaka Kone

IPC: H03H9/64

CPC classification number: H03H3/04 ,  H03H9/02228 ,  H03H9/589

Abstract: A guided acoustic wave resonant device is provided. The device comprises at least two filters (F1, . . . , Fi, . . . , FN), each filter comprising at least two acoustic wave resonators (R11- R12, . . . , Ri1-Ri2, . . . , RN1-RN2), each filter having a useful frequency band (BF1, . . . , BFi, . . . , BFN) centred on a central frequency (f1, . . . , fi, . . . , fN), each resonator comprising at least one suite of inter-digitated upper electrodes exhibiting a periodic structure of period (Λij) and a layer of piezoelectric material, each resonator having a coupling coefficient (k21, k22, . . . , k2n) and a resonant frequency (fr1, . . . , fr2, . . . , fN), wherein at least one of the resonators comprises a differentiation layer (CDfi) making it possible in combination with the period of the inter-digitated electrodes to modify the coupling coefficient of the said resonator, the useful band and the central frequency being determined by the resonant frequencies and the coupling coefficients of the resonators which are adapted so as to have a determined useful bandwidth.

Abstract translation: 提供了一种引导声波谐振装置。 该装置包括至少两个滤波器（F1，...，Fi，...，FN），每个滤波器包括至少两个声波谐振器（R11-R12，...，Ri1-Ri2，...，RN1 -RN2），每个滤波器具有以中心频率（f1，...，fi，...，fN）为中心的有用频带（BF1，...，BFi，...，BFN），每个谐振器包括 具有周期（Λij）的周期性结构的至少一组数字化的上部电极和压电材料层，每个谐振器具有耦合系数（k21，k22，...，k2n）和谐振频率（fr1， 其中，所述谐振器中的至少一个包括微分层（CDfi），使得可以与所述数字化间电极的周期结合以修改所述谐振器的耦合系数 有用频带和中心频率由谐振频率和谐振器的耦合系数确定，这些谐振频率和谐振器的耦合系数被调整为具有 确定有用的带宽。

公开(公告)号：US08692630B2

公开(公告)日：2014-04-08

申请号：US12827875

申请日：2010-06-30

Applicant: Alexandre Reinhardt ,  Issiaka Kone

Inventor： Alexandre Reinhardt ,  Issiaka Kone

IPC: H03H9/70 ,  H03H9/54

CPC classification number: H03H3/04 ,  H03H9/02228 ,  H03H9/589

Abstract: A guided acoustic wave resonant device is provided. The device comprises at least two filters (F1, . . . , Fi, . . . , FN), each filter comprising at least two acoustic wave resonators (R11-R12, . . . , Ri1-Ri2, . . . , RN1-RN2), each filter having a useful frequency band (BF1, . . . , BFi, . . . , BFN) centered on a central frequency (f1, . . . , fi, . . . , fN), each resonator comprising at least one suite of inter-digitated upper electrodes exhibiting a periodic structure of period (Λij) and a layer of piezoelectric material, each resonator having a coupling coefficient (k21, k22, . . . , k2n) and a resonant frequency (fr1, . . . , fr2, . . . , fN), wherein at least one of the resonators comprises a differentiation layer (CDfi) making it possible in combination with the period of the inter-digitated electrodes to modify the coupling coefficient of the said resonator, the useful band and the central frequency being determined by the resonant frequencies and the coupling coefficients of the resonators which are adapted so as to have a determined useful bandwidth.

Abstract translation: 提供了一种引导声波谐振装置。 该装置包括至少两个滤波器（F1，...，Fi，...，FN），每个滤波器包括至少两个声波谐振器（R11-R12，...，Ri1-Ri2，...，RN1 -RN2），每个滤波器具有以中心频率（f1，...，fi，...，fN）为中心的有用频带（BF1，...，BFi，...，BFN），每个谐振器包括 具有周期（Λij）的周期性结构的至少一组数字化的上部电极和压电材料层，每个谐振器具有耦合系数（k21，k22，...，k2n）和谐振频率（fr1， 其中，所述谐振器中的至少一个包括微分层（CDfi），使得可以与所述数字化间电极的周期结合以修改所述谐振器的耦合系数 有用频带和中心频率由谐振频率和谐振器的耦合系数确定，这些谐振频率和谐振器的耦合系数被调整为具有 确定有用的带宽。