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1. 发明公开

EP2830217A4 VERTICALLY COUPLED RESONATOR-TYPE ELASTIC SURFACE WAVE FILTER 有权
标题翻译：具有垂直耦合谐振弹性的表面滤波器
公开(公告)号：EP2830217A4
公开(公告)日：2016-02-24
申请号：EP13764500
申请日：2013-03-15
申请人： MURATA MANUFACTURING CO
发明人： NORICHI TAKAHIRO
IPC分类号： H03H9/64 , H03H9/00 , H03H9/145
CPC分类号： H03H9/0047 , H03H9/0057 , H03H9/14588 , H03H9/6469
摘要： A longitudinally-coupled-resonator-type surface acoustic wave filter includes an unbalanced terminal (10), balanced terminals (20), a piezoelectric substrate, a first surface acoustic wave filter unit (11), a second surface acoustic wave filter unit (12), an unbalanced signal wiring line, balanced signal wiring lines, a pair of interstage wiring lines that connect the first surface acoustic wave filter unit (11) and the second surface acoustic wave filter unit (12) to each other, and ground wiring lines. The first surface acoustic wave filter unit (11) includes a first IDT (111) and a pair of a second IDT and a third IDT (112). The first IDT (111) includes a pair of first divided comb tooth shaped electrodes (111a) obtained by dividing a comb tooth shaped electrode on the side far from the unbalanced terminal (10) along a central axis x. The pair of first divided comb tooth shaped electrodes (111a) are connected by the interstage wiring lines to the second surface acoustic wave filter unit (12). A comb tooth shaped electrode of the second IDT and a comb tooth shaped electrode of the third IDT (112) on the side far from the unbalanced terminal (10) are respectively connected to ground wiring lines that are routed outside of the interstage wiring lines.

2. 发明授权

EP1729415B1 BALANCED SURFACE ACOUSTIC WAVE FILTER 有权
标题翻译：平衡表面滤波器
公开(公告)号：EP1729415B1
公开(公告)日：2014-04-16
申请号：EP05770560.0
申请日：2005-08-10
申请人： MURATA MANUFACTURING CO., LTD.
发明人： TAKAMINE, Yuichi c/o MURATA MANUFACTURING CO., LTD
IPC分类号： H03H9/145 , H03H9/00 , H03H9/64
CPC分类号： H03H9/0071 , H03H9/0038 , H03H9/14582 , H03H9/14588 , H03H9/6436 , H03H9/6476

3. 发明授权

EP1249934B1 Surface acoustic wave apparatus and communications unit 有权
标题翻译：声表面波装置和通信单元
公开(公告)号：EP1249934B1
公开(公告)日：2013-07-31
申请号：EP02290880.0
申请日：2002-04-09
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Shibata, Osamu , Takamine, Yuichi , Watanabe, Hiroki , Yata, Masaru , Sawada, Yoichi
IPC分类号： H03H9/00 , H03H9/64 , H03H9/145 , H03H9/02
CPC分类号： H03H9/008 , H03H9/0038 , H03H9/0042 , H03H9/0061 , H03H9/0071 , H03H9/0085 , H03H9/02748 , H03H9/14517 , H03H9/14532 , H03H9/14547 , H03H9/14576 , H03H9/14579 , H03H9/14582 , H03H9/14585 , H03H9/14588 , H03H9/14591 , H03H9/6436

4. 发明授权

EP1168612B1 Surface acoustic wave device 有权
标题翻译：声表面波器件
公开(公告)号：EP1168612B1
公开(公告)日：2013-04-17
申请号：EP01401683.6
申请日：2001-06-26
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Takamine, Yuichi , Shimoe, Kazunobu , Taga, Shigeto
IPC分类号： H03H9/00 , H03H9/64 , H03H9/10 , H03H9/05 , H03H9/145
CPC分类号： H03H9/0061 , H01L2224/05554 , H01L2224/16225 , H01L2224/48227 , H01L2924/15174 , H01L2924/16195 , H03H9/0042 , H03H9/0057 , H03H9/0085 , H03H9/059 , H03H9/1071 , H03H9/14588 , H03H9/6489

5. 发明授权

EP1269627B1 DUALMODE-OBERFLÄCHENWELLENFILTER MIT VERBESSERTER SYMMETRIE UND ERHÖHTER SPERRDÄMPFUNG 有权
标题翻译：具有改进的对称，增加隔离双模表面波滤波器
公开(公告)号：EP1269627B1
公开(公告)日：2012-08-15
申请号：EP01915022.6
申请日：2001-02-20
申请人： EPCOS AG
发明人： HAGN, Peter , SELMEIER, Peter
IPC分类号： H03H9/00 , H03H9/145
CPC分类号： H03H9/0057 , H03H9/0028 , H03H9/0038 , H03H9/0061 , H03H9/14588
摘要： A DMS filter is disclosed, with a first and second inter-digital converter as signal input or output, arranged between reflector structures, whereby at least one acoustic track has a mid-converter split into part converters, symmetrically arranged about the perpendicular to the propagating direction. The DMS filter is linked to a housing with connector pads or pins in a symmetrical manner, such that an axially symmetrical connection layout is achieved.

6. 发明公开

EP2063530A4 SURFACE ACOUSTIC WAVE FILTER DEVICE AND DUPLEXER 有权
标题翻译：面波滤波器装置和双面打印
公开(公告)号：EP2063530A4
公开(公告)日：2012-01-25
申请号：EP07828519
申请日：2007-09-27
申请人： MURATA MANUFACTURING CO
发明人： TAKAMINE YUICHI
IPC分类号： H03H9/145 , H03H9/00 , H03H9/64 , H03H9/72
CPC分类号： H03H9/0061 , H03H9/0085 , H03H9/14588 , H03H9/6469 , H03H9/725

7. 发明公开

EP1701441A4 BALANCE TYPE ELASTIC WAVE FILTER DEVICE 有权
标题翻译：补偿型的弹性波滤波装置
公开(公告)号：EP1701441A4
公开(公告)日：2011-07-06
申请号：EP05765240
申请日：2005-07-01
申请人： MURATA MANUFACTURING CO
发明人： SHIBAHARA TERUHISA , TAKAHARA SEIICHI
IPC分类号： H03H9/64 , H01L41/18 , H03H9/145
CPC分类号： H03H9/0057 , H03H9/0038 , H03H9/02748 , H03H9/14588 , H03H9/14591

8. 发明公开

EP1443642A3 Saw filter and communications device 审中-公开
公开(公告)号：EP1443642A3
公开(公告)日：2010-03-10
申请号：EP04290193.4
申请日：2004-01-26
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Takamine, Yuichi c/o (A170) Intel. Prop. Dept.
IPC分类号： H03H9/02 , H03H9/64
CPC分类号： H03H9/0071 , H03H9/0042 , H03H9/0085 , H03H9/02685 , H03H9/14582 , H03H9/14588 , H03H9/643 , H03H9/6433 , H03H9/6436 , H03H9/6469 , H03H9/6476
摘要： A SAW filter (200) includes at least two IDTs (203-205) arranged along a SAW propagation direction on a piezoelectric substrate and first and second reflectors (206,207) sandwiching the IDTs. A group of electrode fingers of each of the first and second reflectors (206,207) is interdigital-width weighted. Further, a method of interdigital-width weighting of the electrode fingers of the first reflector (206) is different from that of interdigital-width weighting of the electrode fingers of the second reflector (207).

9. 发明公开

EP1341304A3 Surface acoustic wave filter 有权
标题翻译：表面声波滤波器
公开(公告)号：EP1341304A3
公开(公告)日：2010-02-24
申请号：EP03290480.7
申请日：2003-02-28
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Takamine, Yuichi, Murata Manufacturing Co., Ltd.
IPC分类号： H03H9/64 , H03H9/00 , H03H9/145
CPC分类号： H03H9/008 , H03H9/0038 , H03H9/0042 , H03H9/0071 , H03H9/0085 , H03H9/14582 , H03H9/14588 , H03H9/14591 , H03H9/14597 , H03H9/6436
摘要： A surface acoustic wave filter (1000) includes, on a piezoelectric substrate (X), longitudinally coupled resonator type surface acoustic wave filter sections (1001,1002), including interdigital transducers, each having a narrow-pitched electrode finger portion in an area where interdigital transducers are adjacent to each other, first surface acoustic wave resonators (1023,1024), between the surface acoustic wave filter sections (1001,1002) and an input terminal (213), and second surface acoustic wave resonators (1021,1022) between the surface acoustic wave filter sections (1001,1002) and output terminals (214,215). The resonance point of the surface acoustic wave resonators (1021-1025) falls within the passband of the surface acoustic wave filter sections (1001,1002), and the antiresonance point of the surface acoustic wave resonators is positioned in the vicinity of the high frequency side of the passband.

10. 发明公开

EP1739830A4 ELASTIC WAVE FILTER AND COMMUNICATION DEVICE USING THE SAME 有权转让
标题翻译：弹性波滤波器及通信设备
公开(公告)号：EP1739830A4
公开(公告)日：2009-04-22
申请号：EP05728857
申请日：2005-04-04
申请人： MURATA MANUFACTURING CO
发明人： SHIBAHARA TERUHISA , TANI MASAKAZU , SHIN YASUAKI
IPC分类号： H03H9/64 , H03H9/00 , H03H9/02 , H03H9/145
CPC分类号： H03H9/0222 , H03H9/0061 , H03H9/02952 , H03H9/14588 , H03H9/6469
摘要： On a piezoelectric substrate, there are formed a plurality of longitudinally-connected resonator type elastic wave filter elements, which are cascade-connected so as to constitute an elastic wave filter. By reducing the adverse affect of the parasitic capacitance coming into the cascade connection between the longitudinally-connected resonator type elastic wave filter elements, it is possible to improve the impedance matching at the cascade connection point and improve VSWR at the elastic wave filter I/O terminal. The elastic wave filter (350) includes a piezoelectric substrate (300) having a cascade connection of two longitudinally-connected resonator type elastic wave filters (306, 312), each connecting three IDT (302, 303, 304; 308, 309, 310) formed along the propagation direction of the elastic wave. At least in one of the longitudinally-connected resonator type elastic wave filters (306, 311), the IDT (302, 304; 308, 310) have an electrode finger pitch smaller than the electrode finger pitch of the other IDT (303; 309).

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