公开(公告)号：EP1933457A1

公开(公告)日：2008-06-18

申请号：EP06810325.8

申请日：2006-09-20

申请人： MURATA MANUFACTURING CO., LTD.

发明人： TAKAMINE, Yuichi

IPC分类号： H03H9/145 ,  H03H9/64 ,  H03H9/72

CPC分类号： H03H9/14526 ,  H03H9/0071 ,  H03H9/0085 ,  H03H9/02748 ,  H03H9/14532 ,  H03H9/14576 ,  H03H9/14582 ,  H03H9/14585 ,  H03H9/6476 ,  H03H9/725

摘要： The present invention provides an acoustic wave filter device capable of adjusting and increasing an attenuation in an attenuation band near a passband with hardly affecting a filter characteristic in the passband.
In an acoustic wave filter device 1, first and second longitudinally coupled resonator SAW filters 7 and 8 are provided on a piezoelectric substrate 1. The first and second longitudinally coupled resonator SAW filters 7 and 8 connect in parallel to each other. The first and second longitudinally coupled resonator SAW filters 7 and 8 are withdrawal-weighted. The withdrawal weighting in at least the longitudinally coupled resonator SAW filter 7 is different from the withdrawal weighting in the other longitudinally coupled resonator SAW filter 8.

摘要翻译： 本发明提供了一种能够在通带附近调节和增加衰减频带衰减的声波滤波器装置，几乎不影响通带中的滤波器特性。 在声波滤波器装置1中，第一和第二纵向耦合谐振器SAW滤波器7和8设置在压电基片1上。第一和第二纵向耦合的谐振器SAW滤波器7和8彼此并联。 第一和第二纵向耦合的谐振器SAW滤波器7和8是撤销加权的。 至少纵向耦合的谐振器SAW滤波器7中的提取加权与其他纵向耦合的谐振器SAW滤波器8中的提取加权不同。

公开(公告)号：EP1569334A3

公开(公告)日：2008-04-16

申请号：EP05250827.2

申请日：2005-02-14

申请人： Fujitsu Media Devices Limited

发明人： Saitou, Yasuyuki Fujitsu Media Devices Limited ,  Kawachi, Osamu Fujitsu Media Devices Limited

IPC分类号： H03H9/25 ,  H03H9/64

CPC分类号： H03H9/6483 ,  H03H9/25 ,  H03H9/643 ,  H03H9/6473 ,  H03H9/6496

摘要： A surface acoustic wave device includes a surface acoustic wave resonator. The surface acoustic wave resonator includes comb-like electrodes (10) and reflection electrodes (22, 24) provided on both sides of the comb-like electrodes, and each of the reflection electrodes has at least two different pitches (λa1 to λan). It is thus possible to suppress the ripple components.

摘要翻译： 表面声波装置包括表面声波谐振器。 表面声波谐振器包括设置在梳状电极两侧的梳状电极（10）和反射电极（22,24），并且每个反射电极具有至少两个不同的节距（λa1到λan）。 因此可以抑制纹波分量。

公开(公告)号：EP1895661A1

公开(公告)日：2008-03-05

申请号：EP06756735.4

申请日：2006-05-30

申请人： MURATA MANUFACTURING CO., LTD.

发明人： TANIGUCHI, Norio c/o MURATA MANUFACTURING CO., LTD ,  OMURA, Masashi c/o MURATA MANUFACTURING CO., LTD

IPC分类号： H03H9/72 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/725 ,  H01F2017/002 ,  H03H9/0576 ,  H03H9/72

摘要： There is provided a SAW duplexer in which a bridging inductor can be formed without increasing the area of a package substrate, which has a good filter characteristic, and which can achieve size reduction. A SAW duplexer (1) includes a first SAW filter having a passband with a relatively low frequency, and a second SAW filter having a passband with a relatively high frequency. The first and second SAW filters each have a ladder-shaped circuit configuration. A bridging inductor is connected in parallel to at least one serial arm resonator in the second SAW filter. The bridging inductor includes a coiled portion provided on a multilayer package substrate. The coiled portion is formed by connecting first to third wires (23, 26, and 29) provided on first to third layers by via-hole conductors. First, third, and fifth via-hole conductors (24, 27, and 30) that form a coil return wire portion are disposed inside the coiled portion.

摘要翻译： 提供了一种SAW双工器，其中可以形成桥接电感器，而不增加具有良好滤波器特性的封装衬底的面积，并且可以实现尺寸减小。 SAW双工器（1）包括具有相对低频率的通带的第一SAW滤波器和具有相对较高频率的通带的第二SAW滤波器。 第一和第二SAW滤波器各自具有梯形电路配置。 桥接电感器并联连接到第二SAW滤波器中的至少一个串联臂谐振器。 桥接电感器包括设置在多层封装衬底上的线圈部分。 线圈部分通过通孔导体连接设置在第一至第三层上的第一至第三线（23,26和29）而形成。 形成线圈返回线部分的第一，第三和第五通孔导体（24,27和30）设置在线圈部分内。

公开(公告)号：EP1885064A2

公开(公告)日：2008-02-06

申请号：EP07113301.1

申请日：2007-07-27

申请人： Fujitsu Media Devices Limited

发明人： Kaneda, Yasufumi c/o FUJITSU MEDIA DEVICES LIMITED ,  Kawachi, Osamu c/o FUJITSU MEDIA DEVICES LIMITED ,  Mitobe, Seiichi c/o FUJITSU MEDIA DEVICES LIMITED ,  Ookubo, Kouta c/o FUJITSU MEDIA DEVICES LIMITED

IPC分类号： H03H9/64 ,  H03H9/25

CPC分类号： H03H9/6476 ,  H03H9/14582

摘要： A filter (100) includes a first filter (10) that is connected between an input node (Nin) and an output node (Nout) and is a surface acoustic wave filter, and a second filter (20) that is provided between the input node (Nin) and the output node (Nout) and is connected in parallel with the first filter (10). The first filter (10) has a total number N1 of pairs of electrode fingers of interdigital transducers and the second filter (20) having a total number N2 of pairs of electrode fingers of interdigital transducers, in which N1 is greater than N2. The apertures of the filters may also differ.

摘要翻译： 滤波器（100）包括连接在输入节点（Nin）和输出节点（Nout）之间并且是表面声波滤波器的第一滤波器（10）以及设置在输入节点 节点（Nin）和输出节点（Nout）并且与第一滤波器（10）并联连接。 第一滤波器（10）具有交指换能器的电极指对的总数N1，第二滤波器（20）具有交指换能器的电极指对的总数N2，其中N1大于N2。 过滤器的孔径也可能不同。

公开(公告)号：EP1783901A3

公开(公告)日：2008-01-23

申请号：EP06251897.2

申请日：2006-04-04

申请人： Fujitsu Media Devices Limited

发明人： Nishizawa, Toshio, c/o Fujitsu Media Devices Ltd.

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/10 ,  H03H9/64

CPC分类号： H03H9/1071 ,  H03H9/0057 ,  H03H9/02874 ,  H03H9/145 ,  H03H9/6436 ,  H03H9/6463

摘要： A surface acoustic wave device having a surface acoustic wave filter having a comb-shaped electrode pattern formed on a piezoelectric element, electrode terminals for input (IN) and output (OUT)
being connected with corresponding electrode patterns of a package through bumps, wherein the comb-shaped electrode pattern has a pair of reflective electrodes, and an input comb-shaped electrode and an output comb-shaped electrode disposed between the pair of reflective electrodes; and an electrode terminal of either the input comb-shaped electrode or an output comb-shaped electrode is disposed such that the electrode terminal is positioned on the side opposite to the side of the other electrode terminal sandwiching a ground electrode (GND) using a routing pattern (5).

公开(公告)号：EP1684421B1

公开(公告)日：2008-01-02

申请号：EP06002858.6

申请日：2002-11-13

申请人： NATIONAL UNIVERSITY OF SINGAPORE

发明人： Xu, Yong Ping ,  Sun, Wai Hoong ,  Wang, Xiaofeng ,  Wang, Zhe ,  Liw, Sean Ian Saxon

IPC分类号： H03H7/12 ,  H03H9/64 ,  H03M3/00

CPC分类号： H03M3/404 ,  H03H7/01 ,  H03M3/344 ,  H03M3/348

公开(公告)号：EP1860773A2

公开(公告)日：2007-11-28

申请号：EP07108614.4

申请日：2007-05-22

申请人： Fujitsu Media Devices Limited ,  Fujitsu Ltd.

发明人： Inoue, Shogo c/o FUJITSU LIMITED ,  Matsuda, Takashi c/o FUJITSU LIMITED ,  Mitobe, Seiichi c/o FUJITSU MEDIA DEVICES LIMITED

IPC分类号： H03H7/42 ,  H03H9/00 ,  H03H9/70 ,  H03H9/72 ,  H03H9/64

CPC分类号： H03H7/42 ,  H01F17/0006 ,  H01F27/40 ,  H03H9/0057 ,  H03H9/0576 ,  H03H9/605 ,  H03H9/6476 ,  H03H9/6483 ,  H03H9/706 ,  H03H9/725

摘要： A balanced filter includes: a filter (10) that has at least one unbalanced signal terminal (T1); a balun (40) that is a lumped parameter balun that inputs or outputs signals with different phases generated based on a signal input or output from the unbalanced signal terminal (T1) of the filter (10), the balun (40) being formed with an integrated passive device; and a mounting unit in which the filter (10) and the balun (40) are flip-chip mounted.

摘要翻译： 平衡滤波器包括：具有至少一个不平衡信号端子（T1）的滤波器（10）; 平衡 - 不平衡转换器（40），其是输入或输出基于来自所述滤波器（10）的不平衡信号端子（T1）的信号输入或输出的不同相位的信号的平衡 - 不平衡转换器（40），所述平衡 - 不平衡变换器（40）形成有 集成无源器件; 以及安装单元，其中过滤器（10）和平衡 - 不平衡变换器（40）被倒装安装。

公开(公告)号：EP0874457B1

公开(公告)日：2007-11-14

申请号：EP98301230.3

申请日：1998-02-19

申请人： Oki Electric Industry Co., Ltd.

发明人： Ou, Hok Huor ,  Inose, Naoto

IPC分类号： H03H9/64

CPC分类号： H03H9/6476 ,  H03H9/6463 ,  H03H9/6483

公开(公告)号：EP1326333A3

公开(公告)日：2007-10-17

申请号：EP03003449.0

申请日：1997-11-28

申请人： Oki Electric Industry Co., Ltd.

发明人： Ehara, Hisanori ,  Noguchi, Kazushige ,  Shimamura, Hajime ,  Okada, Yoshio ,  Komazaki, Tomokazu

IPC分类号： H03H9/64

CPC分类号： H03H9/725 ,  H03H7/0115 ,  H03H7/1708 ,  H03H7/1725 ,  H03H7/175 ,  H03H7/1758 ,  H03H7/1766 ,  H03H7/1775 ,  H03H7/1783 ,  H03H7/1791 ,  H03H7/38 ,  H03H9/0576 ,  H03H9/6483 ,  H03H9/72

摘要： A surface-acoustic-wave filter couples a two-port surface-acoustic-wave resonator filter circuit coupled in parallel or in series with a two-port impedance circuit. The two-port impedance circuit has an impedance that creates a pole of attenuation, by making the open-circuit impedance of the surface-acoustic-wave filter equal to the short-circuit impedance. High attenuation over a wide range of stopband frequencies is obtained in this way, combined with steep roll-off between the passband and stopband.

公开(公告)号：EP1453197A4

公开(公告)日：2007-08-15

申请号：EP02767902

申请日：2002-09-05

申请人： FUJITSU MEDIA DEVICES LTD

发明人： UEDA MASANORI ,  KAWACHI OSAMU ,  TAJIMA MOTOYUKI ,  HASHIMOTO KENYA ,  ABE TAKUYA

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

CPC分类号： H03H9/6469 ,  H03H9/0071 ,  H03H9/14535 ,  H03H9/6436 ,  H03H9/6476 ,  H03H9/6483

摘要： A surface acoustic wave filter of low loss and wide-band attenuation characteristics has a piezoelectric substrate, a pair of reflection electrodes formed on the piezoelectric substrate, and comb-shaped electrodes formed on the piezoelectric substrate in front of the pair of reflection electrodes. The electrode pitch of one of two adjacent comb-shaped electrodes of the pair of comb-shaped electrodes is so set that the phase of a surface acoustic wave generated by the two comb-shaped electrodes may vary continuously in the gap from the outermost finger electrode of the other adjacent comb-shaped electrode.

摘要翻译： 具有低损耗和宽频带衰减特性的表面声波滤波器具有压电基片，形成在压电基片上的一对反射电极和形成在该对反射电极前面的压电基片上的梳形电极。 一对梳形电极中两个相邻梳形电极中的一个梳形电极的电极间距设置成使得由两个梳形电极生成的表面声波的相位可以在与最外指形电极的间隙中连续变化 另一个相邻的梳形电极。