公开(公告)号：US20060043507A1

公开(公告)日：2006-03-02

申请号：US10527115

申请日：2003-09-01

申请人： Hans Lobl ,  Robert Milsom ,  Christof Metzmacher ,  Hans-Wolfgang Brand ,  Mareike Klee ,  Rainer Kiewitt

发明人： Hans Lobl ,  Robert Milsom ,  Christof Metzmacher ,  Hans-Wolfgang Brand ,  Mareike Klee ,  Rainer Kiewitt

IPC分类号： H01L29/84

CPC分类号： H03H9/54 ,  H03H3/02 ,  H03H9/02055 ,  H03H9/0211 ,  H03H9/175

摘要： A bulk acoustic wave resonator comprising a substrate (5), a Bragg reflector (4), a top (1) and a bottom (3) electrode and a piezoelectric layer (2) with means for suppression of the pass-band ripples in a bulk acoustic wave filter. The means for absorbing or scattering the spurious modes are a roughened rear side of the substrate (6), an absorbing layer (5) disposed on the rear side of the substrate (6) and/or an absorbing layer (5) disposed on the front side of the substrate.

摘要翻译： 一种体声波谐振器，包括基板（5），布拉格反射器（4），顶部（1）和底部（3）电极和压电层（2），具有用于抑制通带波纹的装置 体声波滤波器。 用于吸收或散射杂散模式的装置是基底（6）的粗糙化后侧，设置在衬底（6）的后侧上的吸收层（5）和/或设置在衬底 衬底的正面。

公开(公告)号：US20050199972A1

公开(公告)日：2005-09-15

申请号：US10514588

申请日：2003-05-15

申请人： Hans Lobl ,  Robert Milsom ,  Mareike Klee ,  Rainer Kiewitt ,  Christof Metzmacher

发明人： Hans Lobl ,  Robert Milsom ,  Mareike Klee ,  Rainer Kiewitt ,  Christof Metzmacher

IPC分类号： H03H9/17 ,  H03H9/05 ,  H03H9/13 ,  H03H9/54 ,  H03H9/56 ,  H03H9/58 ,  H01L29/84

CPC分类号： H03H9/564 ,  H03H9/568

摘要： A bulk wave resonator comprising: a substrate (1); a layer (3) of piezoelectric material deposited on the substrate; a first electrode (2) and a second electrode (4) which are arranged on opposite surfaces of the layer (3) of piezoelectric material, the overlapping area of the first electrode (2) and second electrode (4) defining the resonance range of the bulk wave resonator, characterized in that the overlapping area in an intersecting plane parallel to at least one of the electrodes (2, 4) has an aspect ratio in the range from 1 (b/a) 100, where a is the length and b the width of the bulk wave resonator. The invention also relates to a bulk wave filter comprising such bulk wave resonators.

摘要翻译： 一种体波谐振器，包括：基板（1）; 沉积在基板上的压电材料层（3）; 布置在压电材料层（3）的相对表面上的第一电极（2）和第二电极（4），第一电极（2）和第二电极（4）的重叠区域限定谐振范围 所述体波谐振器的特征在于，与所述电极（2,4）中的至少一个平行的交叉平面中的重叠区域具有在1（b / a）100范围内的纵横比，其中a是所述长度和 b是体波谐振器的宽度。 本发明还涉及包括这种体波谐振器的体波滤波器。

公开(公告)号：US20050219012A1

公开(公告)日：2005-10-06

申请号：US10514587

申请日：2003-05-16

申请人： Robert Milsom ,  Hans Lobl

发明人： Robert Milsom ,  Hans Lobl

IPC分类号： H03H9/00 ,  H03H9/17 ,  H03H9/56 ,  H03H9/58 ,  H03H9/54

CPC分类号： H03H9/0095

摘要： A filter structure, comprising a first signal line, a second signal line, a third signal line and a fourth signal line, said first and third signal lines defining an input port and said second and fourth signal lines defining an output port of a section of said filter structure, said section being defined by a first bulk acoustic wave resonator (A) which is connected between said first signal line and said second signal line, a second bulk acoustic wave resonator (G) which is connected between said third signal line and said fourth signal line, a third bulk acoustic wave resonator (C) which is connected between said first signal line and said fourth signal line, and a fourth bulk acoustic wave resonator (E) which is connected between said second signal line and said third signal line; is characterized in that a frequency pulling factor defined d of at least one of said acoustic wave resonators is non-zero, said frequency pulling factor d being defined by for first and second bulk acoustic wave resonators having a resonant frequency fr1, and for third and fourth bulk acoustic wave resonators having an anti-resonant frequency fa2, f0 being the centre frequency of the filter structure and k the coupling factor of respective resonators.

摘要翻译： 一种滤波器结构，包括第一信号线，第二信号线，第三信号线和第四信号线，所述第一和第三信号线限定输入端口，所述第二和第四信号线限定一部分的输出端口 所述滤波器结构，所述部分由连接在所述第一信号线和所述第二信号线之间的第一体声波谐振器（A）限定，第二体声波谐振器（G）连接在所述第三信号线和 所述第四信号线，连接在所述第一信号线和所述第四信号线之间的第三体声波谐振器（C）和连接在所述第二信号线和所述第三信号线之间的第四体声波谐振器（E） 线; 其特征在于，所述声波谐振器中的至少一个定义的d的频率牵引系数不为零，所述频率拉伸系数d由具有共振频率fr 1的第一和第二体声波谐振器定义，并且对于第三 以及具有反谐振频率fa 2，f 0是滤波器结构的中心频率，k是各个谐振器的耦合系数的第四体声波谐振器。

公开(公告)号：US20070120624A1

公开(公告)日：2007-05-31

申请号：US10574434

申请日：2004-09-24

申请人： Robert Milsom ,  Hans Lobl

发明人： Robert Milsom ,  Hans Lobl

IPC分类号： H03H9/58

CPC分类号： H03H9/564 ,  H03H9/568

摘要： A ladder filter comprising a plurality of bulk acoustic wave resonators, the resonators comprising a plurality of series resonators series resonators in series between an input terminal and an output terminal of the filter, and one or more shunt resonators each connected between a junction between two series resonators and a common terminal, the series resonators comprising an input series resonator connected to the input terminal and an output series resonator connected to the output terminal, and wherein the shunt resonators are designed to satisfy: a unity aspect ratio and wherein the series resonators are designed to satisfy an aspect ratio different from unity. The aspect ratio is defined as the ratio of length to width of the resonator.

摘要翻译： 一种梯形滤波器，包括多个体声波谐振器，所述谐振器包括串联在所述滤波器的输入端子和输出端子之间的多个串联谐振器串联谐振器，以及一个或多个并联谐振器，其分别连接在两个串联 谐振器和公共端子，所述串联谐振器包括连接到所述输入端子的输入串联谐振器和连接到所述输出端子的输出串联谐振器，并且其中所述并联谐振器被设计为满足：单位纵横比，并且其中所述串联谐振器是 旨在满足不同于统一的纵横比。 宽高比被定义为谐振器的长度与宽度的比率。