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1. 发明公开

EP1251638A2 Surface acoustic wave filter apparatus and communications apparatus 有权
标题翻译： AkustischeOberflächenwellenfiltervorrichtungund Kommunikationseinrichtung
公开(公告)号：EP1251638A2
公开(公告)日：2002-10-23
申请号：EP02290977.4
申请日：2002-04-18
申请人： Murata Manufacturing Co., Ltd.
发明人： Sawada, Yoichi
IPC分类号： H03H9/64
CPC分类号： H03H9/0071 , H03H9/0085
摘要： First through fourth longitudinally-coupled-resonator-type SAW filter devices (101-4) are formed on a piezoelectric substrate. Each SAW filter device includes three interdigital transducers (IDTs) (121-3/122,123,128) disposed in a SAW propagating direction, and reflectors (124,125/126,127) disposed such that they sandwich the IDTs therebetween. The SAW filter devices are provided with a balanced-to-unbalanced input/output function. The reflectors (124-5) of the first and second SAW filter devices (101-2) are different from those (126-7) of the third and fourth SAW filter devices (126-7) in at least one of the number, the pitch, the duty ratio, and the thickness of the electrode fingers of the reflectors.
摘要翻译：第一至第四纵向耦合谐振器型SAW滤波器件（101-4）形成在压电基片上。每个SAW滤波器装置包括以SAW传播方向设置的三个叉指式换能器（IDT）（121-3 / 122,123,128）和设置成它们将IDT夹在其间的反射器（124,125 / 126,127）。 SAW滤波器装置具有平衡到不平衡的输入/输出功能。第一和第二SAW滤波器装置（101-2）的反射器（124-5）与第三和第四SAW滤波器装置（126-7）的反射器（124-5）的不同之处在于，反射器的电极指的间距，占空比和厚度。

2. 发明公开

EP2372910A1 Surface acoustic wave apparatus and communications unit 有权
标题翻译： AkustischeOberflächenwellenanordnungund Kommunikationssystem
公开(公告)号：EP2372910A1
公开(公告)日：2011-10-05
申请号：EP11171428.3
申请日：2002-03-12
申请人： Murata Manufacturing Co. Ltd.
发明人： Sawada, Yoichi , Takasaki, Hiroshi
IPC分类号： H03H9/64 , H03H9/00 , H03H9/25 , H03H9/02
CPC分类号： H03H9/0071 , H03H9/0085 , H03H9/02866
摘要： A surface acoustic wave apparatus comprises first to fourth surface acoustic wave (SAW) filter devices (1,3,2,4). The first and third SAW filter devices (1,2) are cascade-connected, the second and fourth SAW filter devices (3,4) are cascade-connected, a propagation path of the first SAW filter device (1) is partially overlapped with a propagation path of the second SAW filter device (3), and a propagation path of the third surface SAW filter device (2) is partially overlapped with a propagation path of the fourth SAW filter device (4). When the center-to-center distance between the first and second SAW filter devices (1,3) is indicated by d 1, the center-to-center distance between the third and fourth SAW filter devices (2,4) is indicated by d 2 , and a wavelength of a surface acoustic wave to be excited is indicated by the first through fourth surface acoustic wave filter devices (1, 3, 2, 4) are disposed so that the center-to-center distance d 1 is differentiated from the center-to-center distance d 2 by an amount equal to approximately (2n+1) x 0.5 A (n = 0, 1, 2, 3, and so on).
摘要翻译：表面声波装置包括第一至第四表面声波（SAW）滤波器装置（1,3,2,4）。第一和第三SAW滤波器装置（1,2）级联连接，第二和第四SAW滤波器装置（3,4）级联连接，第一SAW滤波器装置（1）的传播路径部分地与第二SAW滤波器件（3）的传播路径和第三表面SAW滤波器件（2）的传播路径与第四SAW滤波器件（4）的传播路径部分重叠。当第一和第二SAW滤波器装置（1,3）之间的中心到中心距离由d 1表示时，第三和第四SAW滤波器装置（2,4）之间的中心到中心距离由 d 2，并且由第一至第四表面声波滤波器装置（1,3,2,4）表示的被激励的表面声波的波长被设置为使得中心到中心距离d 1被区分从中心到中心距离d 2等于大约（2n + 1）×0.5A（n = 0,1,2,3等）的量。

3. 发明授权

EP1126605B1 Surface acoustic wave filter device 有权
标题翻译：表面声波滤波器装置
公开(公告)号：EP1126605B1
公开(公告)日：2016-01-06
申请号：EP01400393.3
申请日：2001-02-14
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Sawada, Yoichi
IPC分类号： H03H9/145 , H03H9/05 , H03H9/10 , H03H9/64 , H03H9/02 , H03H9/72
CPC分类号： H03H9/0071 , H03H9/0038 , H03H9/008 , H03H9/0085 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/72 , H03H9/725 , H03H2250/00

4. 发明公开

EP1251638A3 Surface acoustic wave filter apparatus and communications apparatus 有权
标题翻译：一种表面声波滤波器装置和通信装置
公开(公告)号：EP1251638A3
公开(公告)日：2010-02-03
申请号：EP02290977.4
申请日：2002-04-18
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Sawada, Yoichi
IPC分类号： H03H9/64 , H03H9/00 , H03H9/25 , H03H9/02
CPC分类号： H03H9/0071 , H03H9/0085
摘要： First through fourth longitudinally-coupled-resonator-type SAW filter devices (101-4) are formed on a piezoelectric substrate. Each SAW filter device includes three interdigital transducers (IDTs) (121-3/122,123,128) disposed in a SAW propagating direction, and reflectors (124,125/126,127) disposed such that they sandwich the IDTs therebetween. The SAW filter devices are provided with a balanced-to-unbalanced input/output function. The reflectors (124-5) of the first and second SAW filter devices (101-2) are different from those (126-7) of the third and fourth SAW filter devices (126-7) in at least one of the number, the pitch, the duty ratio, and the thickness of the electrode fingers of the reflectors.

5. 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

6. 发明授权

EP1251638B1 Surface acoustic wave filter apparatus and communications apparatus 有权
标题翻译：一种表面声波滤波器装置和通信装置
公开(公告)号：EP1251638B1
公开(公告)日：2012-10-24
申请号：EP02290977.4
申请日：2002-04-18
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Sawada, Yoichi
IPC分类号： H03H9/64 , H03H9/00 , H03H9/25 , H03H9/02
CPC分类号： H03H9/0071 , H03H9/0085

7. 发明授权

EP2372910B1 Surface acoustic wave apparatus and communications unit 有权
标题翻译：一种声表面波装置和通信系统
公开(公告)号：EP2372910B1
公开(公告)日：2012-06-06
申请号：EP11171428.3
申请日：2002-03-12
申请人： Murata Manufacturing Co. Ltd.
发明人： Sawada, Yoichi , Takasaki, Hiroshi
IPC分类号： H03H9/64 , H03H9/00 , H03H9/25 , H03H9/02
CPC分类号： H03H9/0071 , H03H9/0085 , H03H9/02866

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