公开(公告)号：US20160094201A1

公开(公告)日：2016-03-31

申请号：US14959135

申请日：2015-12-04

申请人： Murata Manufacturing Co., Ltd.

发明人： Yuichi TAKAMINE

IPC分类号： H03H9/72 ,  H03H9/54

CPC分类号： H03H9/725 ,  H03H9/0038 ,  H03H9/008 ,  H03H9/14588 ,  H03H9/54 ,  H03H9/6433 ,  H03H9/6469 ,  H03H9/6496

摘要： A surface acoustic wave filter device includes surface acoustic wave filters, one of which includes a longitudinally coupled resonator-type first filter section and a longitudinally coupled resonator-type second filter section. The second filter section is electrically connected in parallel or series with the first filter section on at least one of an input signal side and an output signal side. The first filter section includes a first IDT group including three IDTs. The second filter section includes a second IDT group including three IDTs. Another surface acoustic wave filter includes a third IDT group that is cascade connected to the first filter section and the second filter section and includes IDTs arranged in order in a line in a surface acoustic wave propagation direction.

摘要翻译： 表面声波滤波器装置包括表面声波滤波器，其中之一包括纵向耦合的谐振器型第一滤波器部分和纵向耦合的谐振器型第二滤波器部分。 第二滤波器部分在输入信号侧和输出信号侧中的至少一个上与第一滤波器部分并联或串联电连接。 第一滤波器部分包括包括三个IDT的第一IDT组。 第二滤波器部分包括包括三个IDT的第二IDT组。 另一个表面声波滤波器包括级联连接到第一滤波器部分和第二滤波器部分的第三IDT组，并且包括按表面声波传播方向的一行排列的IDT。

公开(公告)号：US09287849B2

公开(公告)日：2016-03-15

申请号：US14130653

申请日：2013-03-11

申请人： SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD.

发明人： Satoru Ikeuchi ,  Seiichi Hatakenaka

IPC分类号： H03H9/72 ,  H03H9/25 ,  H03H9/02 ,  H03H9/64 ,  H03H9/00 ,  H03H9/145

CPC分类号： H03H9/25 ,  H03H9/0057 ,  H03H9/02803 ,  H03H9/14588 ,  H03H9/64 ,  H03H9/6433 ,  H03H2250/00

摘要： A reflector of the elastic wave resonator in an elastic wave device has first and second regions. The second region has third and fourth regions. The first region is located near to the IDTs of the reflector, while the second region is located farther from them. The third region is located nearer to the IDTs in the second region, while the fourth region is located farther from them. As a result that the center frequency of the reflection band in the fourth region is lower than that in the third region, an elastic wave device with low energy loss and insertion loss is provided.

摘要翻译： 弹性波装置中的弹性波谐振器的反射器具有第一和第二区域。 第二个地区有第三和第四个地区。 第一区域位于反射器的IDT附近，而第二区域位于距反射体的IDT更近的位置。 第三个区域位于第二个区域的IDT附近，而第四个区域距离它们更远。 结果，第四区域中的反射带的中心频率比第三区域的中心频率低，提供了具有低能量损耗和插入损耗的弹性波装置。

公开(公告)号：US09124239B2

公开(公告)日：2015-09-01

申请号：US13521239

申请日：2011-12-14

申请人： Hideaki Nakayama ,  Atsushi Takano ,  Mitsuhiro Furukawa

发明人： Hideaki Nakayama ,  Atsushi Takano ,  Mitsuhiro Furukawa

IPC分类号： H03H9/72 ,  H03H9/25 ,  H03H9/05 ,  H03H9/10 ,  H03H9/00 ,  H03H9/145

CPC分类号： H03H9/725 ,  H01F38/14 ,  H03H9/0057 ,  H03H9/0547 ,  H03H9/0576 ,  H03H9/059 ,  H03H9/1071 ,  H03H9/12 ,  H03H9/14588 ,  H03H9/64

摘要： An elastic wave device includes a piezoelectric substrate, an IDT electrode disposed on the piezoelectric substrate, a wiring electrode disposed on the piezoelectric substrate and connected to the IDT electrode, a first insulator disposed on the piezoelectric substrate to seal the IDT electrode and the wiring electrode, a resin layer provided on the first insulator, an inductor electrode disposed on the resin layer, a second insulator disposed on the resin layer to cover the inductor electrode, a terminal electrode disposed on the second insulator, and a connecting electrode passing through the first insulator, the second insulator, and the resin layer to electrically connect the wiring electrode, the terminal electrode, and the inductor electrode. The first insulator includes a resin and filler dispersed in the resin. A density of filler in the resin layer is smaller than an average density of the filler in the first insulator. This elastic wave device has excellent characteristics of the inductor while reducing variations of the characteristics.

摘要翻译： 弹性波装置包括压电基片，设置在压电基片上的IDT电极，布置在压电基片上并与IDT电极连接的布线电极，设置在压电基片上以密封IDT电极和布线电极的第一绝缘体 设置在第一绝缘体上的树脂层，设置在树脂层上的电感器电极，设置在树脂层上以覆盖电感器电极的第二绝缘体，设置在第二绝缘体上的端子电极和穿过第一绝缘体的连接电极 绝缘体，第二绝缘体和树脂层，以电连接布线电极，端子电极和电感器电极。 第一绝缘体包括分散在树脂中的树脂和填料。 树脂层中填料的密度小于第一绝缘体中填料的平均密度。 该弹性波器件具有优异的电感特性，同时降低了特性的变化。

公开(公告)号：US20150021290A1

公开(公告)日：2015-01-22

申请号：US14508854

申请日：2014-10-07

申请人： TAIYO YUDEN CO., LTD.

发明人： Keiji TSUDA

IPC分类号： H01L41/297 ,  H01L41/331 ,  H01L41/047 ,  H01L41/332 ,  H03H9/25 ,  H03H9/64

CPC分类号： H01L41/297 ,  H01L41/0471 ,  H01L41/331 ,  H01L41/332 ,  H03H3/08 ,  H03H9/0057 ,  H03H9/0071 ,  H03H9/059 ,  H03H9/1085 ,  H03H9/1092 ,  H03H9/14588 ,  H03H9/25 ,  H03H9/64

摘要： An acoustic wave device includes a piezoelectric substrate, interdigitated electrodes formed on the piezoelectric substrate, and an insulation film that is formed on a surface of the interdigitated electrodes by atomic layer deposition and includes aluminum oxide.

摘要翻译： 声波装置包括：压电基板，形成在压电基板上的叉指电极;以及绝缘膜，其通过原子层沉积形成在交叉指状电极的表面上，并且包括氧化铝。

公开(公告)号：US07915975B2

公开(公告)日：2011-03-29

申请号：US12473107

申请日：2009-05-27

申请人： Thomas Bauer ,  Andreas Waldherr ,  Stefan Freisleben

发明人： Thomas Bauer ,  Andreas Waldherr ,  Stefan Freisleben

IPC分类号： H03H9/64

CPC分类号： H03H9/14597 ,  H03H9/0028 ,  H03H9/0038 ,  H03H9/0057 ,  H03H9/008 ,  H03H9/0085 ,  H03H9/14588

摘要： For improving the matching of a DMS track that is connected in series with a reactance element, it is proposed to connect a shunt branch to ground between the DMS track and reactance element parallel to the signal-carrying conductor section, where a capacitive element is arranged in this shunt branch.

摘要翻译： 为了改善与电抗元件串联连接的DMS磁道的匹配，建议在DMS信号与平行于信号承载导体部分的电抗元件之间连接分流支路，其中布置电容元件 在这个分流支路。

公开(公告)号：US07800460B2

公开(公告)日：2010-09-21

申请号：US12242983

申请日：2008-10-01

申请人： Yuichi Takamine ,  Masaru Yata ,  Yasuhisa Fujii

发明人： Yuichi Takamine ,  Masaru Yata ,  Yasuhisa Fujii

IPC分类号： H03H9/72 ,  H03H9/64

CPC分类号： H03H9/0071 ,  H03H9/02748 ,  H03H9/14588 ,  H03H9/725

摘要： An elastic wave filter device includes first and second elastic wave filter units connected to an unbalanced terminal. The first and second elastic wave filter units include first to third IDTs and fourth to sixth IDTs, respectively. One end of the first IDT, one end of the second IDT, one end of the fourth IDT, and one end of the sixth IDT are commonly connected together and are connected to the unbalanced terminal. The second IDT and the fifth IDT are each divided into first to third sub-IDT portions in the elastic wave propagation direction, respectively. The second sub-IDT portions of the second and fifth IDTs are connected to first and second balanced terminals, respectively.

摘要翻译： 弹性波滤波器装置包括连接到不平衡端子的第一和第二弹性波滤波器单元。 第一和第二弹性波滤波器单元分别包括第一至第三IDT和第四至第六IDT。 第一IDT的一端，第二IDT的一端，第四IDT的一端和第六IDT的一端共同连接在一起，并连接到不平衡终端。 第二IDT和第五IDT分别在弹性波传播方向上划分成第一至第三子IDT部分。 第二和第五IDT的第二子IDT部分分别连接到第一和第二平衡端子。

公开(公告)号：US07760048B2

公开(公告)日：2010-07-20

申请号：US10561341

申请日：2005-04-04

申请人： Teruhisa Shibahara ,  Masakazu Tani ,  Yasuaki Shin

发明人： Teruhisa Shibahara ,  Masakazu Tani ,  Yasuaki Shin

IPC分类号： H03H9/64 ,  H03H9/72

CPC分类号： H03H9/0222 ,  H03H9/0061 ,  H03H9/02952 ,  H03H9/14588 ,  H03H9/6469

摘要： An elastic wave filter includes two longitudinally coupled resonator type elastic wave filter elements that are cascade connected with each other, each longitudinally coupled resonator type elastic wave filter element including three IDTs (interdigital transducers) arranged on a piezoelectric substrate in a transmitting direction of an elastic wave. In at least one of the longitudinally coupled resonator type elastic wave filter elements, electrode fingers of the IDTs that are cascade connected are arranged at a pitch that is smaller than a pitch of electrode fingers of the remaining IDT. The adverse effect of a parasitic capacitance in cascade connected wires disposed between the longitudinally coupled resonator type elastic wave filter elements is reduced so as to improve impedance matching of a cascade connected portion and to improve the VSWR characteristics of input-output terminals of the elastic wave filter.

摘要翻译： 弹性波滤波器包括彼此串联连接的两个纵向耦合的谐振器型弹性波滤波器元件，每个纵向耦合的谐振器型弹性波滤波器元件包括布置在压电基片上的三个IDT（叉指换能器） 波。 在纵向耦合的谐振器型弹性波滤波器元件中的至少一个中，串联连接的IDT的电极指以小于剩余IDT的电极指的间距的间距排列。 布置在纵向耦合的谐振器型弹性波滤波器元件之间的级联连接线中的寄生电容的不利影响减小，从而改善级联连接部分的阻抗匹配并改善弹性波的输入 - 输出端子的VSWR特性 过滤。

公开(公告)号：US07579932B2

公开(公告)日：2009-08-25

申请号：US11571432

申请日：2005-07-01

申请人： Michiaki Takagi ,  Katsuro Yoneya ,  Masahiro Oshio

发明人： Michiaki Takagi ,  Katsuro Yoneya ,  Masahiro Oshio

IPC分类号： H03H9/145 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/0042 ,  H03H9/02551 ,  H03H9/02842 ,  H03H9/14588

摘要： A longitudinally coupled multi-mode SAW resonator filter includes input and output interdigital transducers (IDTs) with a control IDT therebetween to control a state of the surface acoustic wave. The input, output, and control IDTs alternatively arrange two different zones C and E having respective electrode period lengths PC and PE, being equal to a sum of the electrode finger width L and spacing S between electrode fingers, and a number of respective pairs MC and ME of electrode fingers is set to 1 in both zones C and E. Electrode fingers in zones C and E are all connected to a feeder conductor. Hence, a filter having small insertion loss, and a wide fractional bandwidth of 2000-4000 ppm is achieved by canceling and decreasing sums of reflected waves from the electrode fingers in zones C and E, and decreasing the effective reflection coefficient per the electrode finger.

摘要翻译： 纵向耦合的多模SAW谐振滤波器包括其间具有控制IDT的输入和输出叉指式换能器（IDT），以控制表面声波的状态。 输入，输出和控制IDT交替地布置具有相应的电极周期长度PC和PE的两个不同的区域C和E，其等于电极指之间的电极指宽度L和间距S之和以及多个相应的对MC 并且电极指的ME在两个区域C和E中都设置为1.区域C和E中的电极手指都连接到馈线导体。 因此，通过抵消和减少来自区域C和E中的电极指的反射波的总和，并且降低每个电极指的有效反射系数，实现了具有小插入损耗和2000-4000ppm的宽分数带宽的滤波器。

公开(公告)号：US20090201105A1

公开(公告)日：2009-08-13

申请号：US12428715

申请日：2009-04-23

申请人： Minefumi Ouchi

发明人： Minefumi Ouchi

IPC分类号： H03H9/46

CPC分类号： H03H9/6469 ,  H03H9/0057 ,  H03H9/0061 ,  H03H9/0085 ,  H03H9/0222 ,  H03H9/14588 ,  H03H9/6433

摘要： An acoustic wave device includes first and second 3-IDT acoustic wave filters provided on a piezoelectric substrate. A second IDT in the first acoustic wave filter is electrically connected to a second IDT in the second acoustic wave filter and a third IDT in the first acoustic wave filter is electrically connected to a third IDT in the second acoustic wave filter to cascade the first acoustic wave filter with the second acoustic wave filter. An acoustic wave resonator is connected to a first IDT in the first acoustic wave filter. In the acoustic wave device, NA/NB is in a range from about 2.6 to about 3.5 and fB/fa is in a range from about 0.995 to about 1.010, where NA denotes the number of electrode fingers of the first IDT in the first acoustic wave filter, NB denotes the number of electrode fingers of each of the second and third IDTs in the first acoustic wave filter, fB denotes the end frequency of a stop band of each of reflectors in the first and second acoustic wave filters, and fa denotes an anti-resonant frequency of the acoustic wave resonator.

摘要翻译： 声波装置包括设置在压电基板上的第一和第二3-IDT声波滤波器。 第一声​​波滤波器中的第二IDT电连接到第二声波滤波器中的第二IDT，并且第一声波滤波器中的第三IDT与第二声波滤波器中的第三IDT电连接以级联第一声学 滤波器与第二声波滤波器。 声波谐振器连接到第一声波滤波器中的第一IDT。 在声波装置中，NA / NB在约2.6至约3.5的范围内，并且fB / fa在约0.995至约1.010的范围内，其中NA表示第一声学中第一IDT的电极指的数量 波形滤波器，NB表示第一声波滤波器中的第二和第三IDT中的每一个的电极指的数量，fB表示第一和第二声波滤波器中每个反射器的阻带的结束频率，fa表示 声波谐振器的反谐振频率。

公开(公告)号：US20090179715A1

公开(公告)日：2009-07-16

申请号：US12414696

申请日：2009-03-31

申请人： Yuichi TAKAMINE

发明人： Yuichi TAKAMINE

IPC分类号： H03H9/00

CPC分类号： H03H9/0061 ,  H03H9/0085 ,  H03H9/14588 ,  H03H9/6469 ,  H03H9/725

摘要： A surface acoustic wave filter device includes first and second longitudinally coupled resonator type surface acoustic wave filter units. The first and second filter units are cascade-connected to each other. A phase of a signal flowing through a first signal line electrically connecting second IDTs of the first and second surface acoustic wave filter units is different by about 180° from a phase of a signal flowing through a signal line electrically connecting third IDTs of the first and second surface acoustic wave filter units. A surface acoustic wave resonator is connected between the first and second signal lines. A resonance point of the surface acoustic wave resonator is set in an attenuation region in the vicinity of the edge of a low frequency side of a filter passband or an anti-resonance point of the surface acoustic wave resonator is set in an attenuation region in the vicinity of the edge of a high frequency side of the filter passband

摘要翻译： 表面声波滤波器装置包括第一和第二纵向耦合的谐振器型表面声波滤波器单元。 第一和第二过滤器单元彼此级联连接。 流过电连接第一和第二声表面波滤波器单元的第二IDT的第一信号线的信号的相位与流过电连接第一和第二表面声波滤波器单元的第三IDT的信号线的信号的相位相差约180° 第二声表面波滤波器单元。 表面声波谐振器连接在第一和第二信号线之间。 表面声波谐振器的共振点设置在滤波器通带的低频侧边缘附近的衰减区域中，或者声表面波谐振器的反共振点被设定在衰减区域中 滤波器通带的高频侧的边缘附近