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1. 发明申请

US20120235767A1 BRANCHING FILTER 有权
标题翻译：分支过滤器
公开(公告)号：US20120235767A1
公开(公告)日：2012-09-20
申请号：US13487432
申请日：2012-06-04
申请人： Toshiaki TAKATA , Yasuhiro SHIMIZU
发明人： Toshiaki TAKATA , Yasuhiro SHIMIZU
IPC分类号： H03H9/72 , H03H9/64
CPC分类号： H03H9/0576 , H03H9/0085 , H03H9/6469 , H03H9/6483 , H03H9/725
摘要： A branching filter includes a longitudinally-coupled-resonator-type elastic wave filter having a balanced-unbalanced transformation function and the branching filter has excellent balance characteristics and a small size. The branching filter includes a ladder elastic wave filter chip and a longitudinally-coupled-resonator-type elastic wave filter chip. An antenna back-surface electrode and an antenna electrode pad are connected to each other via a first wiring provided in a wiring substrate. The antenna electrode pad and a longitudinally-coupled-resonator-type elastic wave filter are connected to each other via a second wiring provided on a piezoelectric substrate. The second wiring extends in a first direction and a first functional electrode and a second functional electrode provided on the piezoelectric substrate are axisymmetrically arranged with respect to each other about a central axis that extends in the first direction of the second wiring.
摘要翻译：分路滤波器包括具有平衡不平衡变换函数的纵向耦合谐振器型弹性波滤波器，并且分波器滤波器具有优异的平衡特性和小尺寸。分路滤波器包括梯形弹性波滤波器芯片和纵向耦合谐振器型弹性波滤波器芯片。天线背面电极和天线电极焊盘通过设置在布线基板中的第一布线彼此连接。天线电极焊盘和纵向耦合谐振器型弹性波滤波器通过设置在压电基板上的第二布线相互连接。第二布线沿第一方向延伸，并且设置在压电基板上的第一功能电极和第二功能电极围绕在第二布线的第一方向上延伸的中心轴线彼此轴对称布置。

2. 发明申请

US20120068787A1 ELASTIC WAVE RESONATOR, LADDER FILTER AND DUPLEXER 有权
标题翻译：弹性波共振器，梯形滤波器和双工器
公开(公告)号：US20120068787A1
公开(公告)日：2012-03-22
申请号：US13306012
申请日：2011-11-29
申请人： Toshiaki TAKATA
发明人： Toshiaki TAKATA
IPC分类号： H03H9/72 , H03H9/25 , H03H9/64
CPC分类号： H03H9/0222 , H03H9/02929 , H03H9/02944 , H03H9/02992 , H03H9/1452 , H03H9/14573
摘要： An acoustic wave resonator that is excellent in terms of return loss characteristics at the resonant and anti-resonant frequencies and that is capable of effectively reducing loss includes an IDT electrode in which a plurality of first electrode fingers and a plurality of second dummy electrode fingers are connected to a first common electrode, a plurality of second electrode fingers and a plurality of first dummy electrode fingers are connected to a second common electrode. Apodization weighting is applied in the acoustic wave propagation direction. The metallization ratio of a non-crossing region is relatively high compared with the metallization ratio of a crossing region in the acoustic wave propagation direction.
摘要翻译：在谐振和反谐振频率方面具有优异的回波损耗特性并且能够有效减少损耗的声波谐振器包括：多个第一电极指和多个第二虚拟电极指的IDT电极连接到第一公共电极，多个第二电极指和多个第一虚拟电极指连接到第二公共电极。在声波传播方向上应用变迹加权。非交叉区域的金属化率相对于声波传播方向上的交叉区域的金属化率相对较高。

3. 发明申请

US20070247259A1 BRANCHING FILTER 有权
标题翻译：分支过滤器
公开(公告)号：US20070247259A1
公开(公告)日：2007-10-25
申请号：US11766233
申请日：2007-06-21
申请人： Toshiaki TAKATA
发明人： Toshiaki TAKATA
IPC分类号： H03H9/72
CPC分类号： H03H9/0576 , H03H9/6483 , H03H9/72 , H03H9/725
摘要： A branching filter suppresses the effect of a ripple at a high frequency side of a first band-pass filter having a relatively low frequency passband and achieves sufficient pass band widths of the first and second band-pass filters. The branching filter includes a first band-pass filter having a relatively low frequency passband and a second band-pass filter having a relatively high frequency passband. The first and second band-pass filters each have a SAW filter having a ladder circuit structure. The second band-pass filter has first to third parallel resonators. The first and second parallel resonators are commonly connected to a common-connection ground terminal. A first inductance is connected between the common-connection ground terminal and a ground potential. In the branching filter, a relationship f1>f0>f2 is satisfied, wherein f0 denotes an average of resonant frequencies of all the parallel resonators.
摘要翻译：分路滤波器抑制具有相对低频通带的第一带通滤波器的高频侧的纹波的影响，并且获得第一和第二带通滤波器的足够的通带宽度。分路滤波器包括具有相对低频通带的第一带通滤波器和具有相对较高频率通带的第二带通滤波器。第一和第二带通滤波器各自具有梯形电路结构的SAW滤波器。第二带通滤波器具有第一至第三并联谐振器。第一和第二并联谐振器通常连接到公共接地端子。第一电感连接在公共接地端和地电位之间。在分波器中，满足关系f 1> f 0> f 2，其中f 0表示所有并联谐振器的谐振频率的平均值。

4. 发明申请

US20120274418A1 BRANCHING FILTER 有权
标题翻译：分支过滤器
公开(公告)号：US20120274418A1
公开(公告)日：2012-11-01
申请号：US13547082
申请日：2012-07-12
申请人： Toshiaki TAKATA , Shigeyuki FUJITA
发明人： Toshiaki TAKATA , Shigeyuki FUJITA
IPC分类号： H03H9/70 , H03H9/56
CPC分类号： H03H9/0085 , H03H9/02913 , H03H9/0576 , H03H9/725
摘要： A branching filter includes a ladder-type elastic wave filter unit connected between an antenna terminal and a transmission signal terminal and a longitudinally coupled resonator-type elastic wave filter unit connected between an antenna terminal and first and second balanced reception signal terminals while maintaining the isolation characteristics between the transmission signal terminal and the first and second reception signal terminals. In a duplexer, a transmission signal propagation direction is perpendicular or substantially perpendicular to each of a first reception signal propagation direction and a second reception signal propagation direction.
摘要翻译：分路滤波器包括连接在天线端子和发送信号端子之间的梯形弹性波滤波器单元和连接在天线端子与第一和第二平衡接收信号端子之间的纵向耦合的谐振器型弹性波滤波器单元，同时保持隔离发送信号端子与第一和第二接收信号端子之间的特性。在双工器中，发送信号传播方向与第一接收信号传播方向和第二接收信号传播方向垂直或基本垂直。

5. 发明申请

US20090058555A1 ELASTIC WAVE DUPLEXER 有权
标题翻译：弹性波复用器
公开(公告)号：US20090058555A1
公开(公告)日：2009-03-05
申请号：US12274411
申请日：2008-11-20
申请人： Toshiaki TAKATA , Osamu YOKOKURA
发明人： Toshiaki TAKATA , Osamu YOKOKURA
IPC分类号： H03H9/72
CPC分类号： H03H9/0576 , H01L2224/16 , H01L2224/48227 , H01L2224/49171 , H01L2924/30111 , H03H9/725 , H01L2924/00
摘要： An elastic wave duplexer includes a transmission filter chip and a reception filter chip each defined by an elastic wave filter chip and flip-chip bonded to a laminated board. A coil-shaped line including coil-shaped line patterns is provided inside the laminated board. The coil-shaped line defines an impedance matching circuit. In plan view, the transmission filter chip is disposed on one side of a center line passing through the approximate center of the laminated board and extending between a first edge and a second edge, and the reception filter chip is disposed on the other side of the center line. The coil-shaped line is disposed on the side on which the reception filter chip is disposed.
摘要翻译：弹性波双工器包括传输滤波器芯片和接收滤波器芯片，每个接收滤波器芯片由弹性波滤波器芯片和倒装芯片结合到层压板上而定义。在层叠板内设置有包括线圈状线状的线圈状线。线圈形线路限定了阻抗匹配电路。在平面图中，透射滤光片芯片配置在穿过层叠板的大致中心的中心线的一侧，并且在第一边缘和第二边缘之间延伸，并且接收滤波器芯片设置在中心线。线圈状线设置在配置有接收滤波器芯片的一侧。

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