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1. 发明申请

US20030214368A1 Surface acoustic wave duplexer and communication apparatus having the same 有权
标题翻译：声表面波双工器及其通信装置
公开(公告)号：US20030214368A1
公开(公告)日：2003-11-20
申请号：US10423860
申请日：2003-04-28
申请人： Murata Manufacturing Co., Ltd
发明人： Norio Taniguchi
IPC分类号： H03H009/64
CPC分类号： H03H9/725 , H03H9/0576 , H03H9/6483 , H03H9/72
摘要： A surface acoustic wave duplexer includes a first filter including a ladder filter and a second filter including a ladder filter with a pass band that is different from that of the first filter. Inductors are connected in parallel with respective series resonators of both first and second filters.
摘要翻译：声表面波双工器包括具有梯形滤波器的第一滤波器和包括具有不同于第一滤波器的通带的梯形滤波器的第二滤波器。电感器与第一和第二滤波器的各个串联谐振器并联连接。

2. 发明申请

US20010008387A1 Surface acoustic wave device, surface acoustic wave filter, and manufacturing method for the surface acoustic wave device 失效
标题翻译：弹性表面波装置，声表面波滤波器及声表面波装置的制造方法
公开(公告)号：US20010008387A1
公开(公告)日：2001-07-19
申请号：US09761315
申请日：2001-01-17
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/64
CPC分类号： H03H9/6483
摘要： A surface acoustic wave device includes a piezoelectric substrate made of LiTao3 and at least one interdigital transducer provided on the substrate and having a plurality of electrode fingers. The polarization direction in at least one gap portion between electrode fingers of the at least one interdigital transducer is different from the polarization direction in other gap portions between electrode fingers on the same propagation path.
摘要翻译：表面声波装置包括由LiTao3制成的压电基板和设置在基板上并具有多个电极指的至少一个叉指式换能器。至少一个叉指式换能器的电极指之间的至少一个间隙部分中的极化方向与相同传播路径上的电极指之间的其它间隙部分中的极化方向不同。

3. 发明申请

US20040140866A1 Ladder filter, branching filter, and communication apparatus 有权
标题翻译：梯形滤波器，分路滤波器和通信装置
公开(公告)号：US20040140866A1
公开(公告)日：2004-07-22
申请号：US10735744
申请日：2003-12-16
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/70 , H03H009/56 , H03H009/64
CPC分类号： H03H9/6483 , H03H9/564 , H03H9/568 , H03H9/605 , H03H9/6496
摘要： A ladder filter includes series arm resonators and parallel arm resonators which are alternately connected to each other. The series arm resonators include a first series arm resonator connected in parallel with an inductor and a second series arm resonator not connected to the inductor. The ladder filter satisfies the relationship of fsr1
摘要翻译：梯形滤波器包括交替地彼此连接的串联臂谐振器和并联臂谐振器。串联臂谐振器包括与电感器并联连接的第一串联臂谐振器和未连接到电感器的第二串联臂谐振器。梯形滤波器满足fsr1

4. 发明申请

US20030006859A1 Surface acoustic wave device and communication apparatus 有权
标题翻译：声表面波装置及通信装置
公开(公告)号：US20030006859A1
公开(公告)日：2003-01-09
申请号：US10132284
申请日：2002-04-26
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/64
CPC分类号： H03H9/725 , H03H9/6483
摘要： A branching filter is a surface acoustic wave device in which a first filter having a relatively low bandpass frequency and a second filter having a relatively high bandpass frequency are connected to a common terminal. A junction-side resonator that is included in the second filter and that is connected in closest proximity to the common terminal is connected in series. The resonant frequency fsr of the junction-side resonator is higher than the center frequency f0, which is the center of the passband, of the second filter, and is more preferably set so as to satisfy the expression: f0nullBWnull0.2nullfsrnullf0nullBWnull0.7, where BW is the bandwidth of the passband.
摘要翻译：分路滤波器是具有相对低带通频率的第一滤波器和具有相对较高带通频率的第二滤波器的表面声波装置连接到公共端子。包括在第二滤波器中并且最靠近公共端子连接的接合侧谐振器被串联连接。结侧谐振器的谐振频率fsr高于第二滤波器的通带中心的中心频率f0，更优选设定为满足以下表达式：f0 + BWx0.2 <= fsr <= f0 + BWx0.7，其中BW是通带的带宽。

5. 发明申请

US20010013816A1 Surface acoustic wave filter 有权
标题翻译：表面声波滤波器
公开(公告)号：US20010013816A1
公开(公告)日：2001-08-16
申请号：US09778428
申请日：2001-02-07
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/64
CPC分类号： H03H9/0028 , H03H9/6483
摘要： A surface acoustic wave filter includes a piezoelectric substrate and a plurality of surface acoustic wave resonators provided on the piezoelectric substrate and connected to define a ladder filter circuit. The filter circuit includes input-side balanced signal terminals A1 and A2 connected to an external balanced circuit, output-side balanced signal terminals B1 and B2 connected to an external balanced circuit, at least one first series arm surface acoustic wave resonator connected in series between the input-side balanced signal terminal A1 and the output-side balanced signal terminal B1, at least one second series arm surface acoustic wave resonator connected in series between the input-side balanced signal terminal A2 and the output-side balanced signal terminal B2, and at least one impedance element connected between a first signal line connecting the input-side balanced signal terminal A1 to the output-side balanced signal terminal B1 and a second signal line connecting the input-side balanced signal terminal A2 to the output-side balanced signal terminal B2.
摘要翻译：表面声波滤波器包括压电基片和设置在压电基片上的多个表面声波谐振器，并连接以形成梯形滤波器电路。滤波电路包括连接到外部平衡电路的输入侧平衡信号端子A1和A2，连接到外部平衡电路的输出侧平衡信号端子B1和B2，串联连接的至少一个第一串联臂声表面波谐振器输入侧平衡信号端子A1和输出侧平衡信号端子B1，串联连接在输入侧平衡信号端子A2和输出侧平衡信号端子B2之间的至少一个第二串联臂声表面波谐振器，连接在连接输入侧平衡信号端子A1的第一信号线与输出侧平衡信号端子B1之间的至少一个阻抗元件以及将输入侧平衡信号端子A2与输出侧平衡信号端子B1连接的第二信号线信号端子B2。

6. 发明申请

US20020180562A1 Surface acoustic wave filter device 有权
标题翻译：表面声波滤波装置
公开(公告)号：US20020180562A1
公开(公告)日：2002-12-05
申请号：US10043140
申请日：2002-01-14
申请人： Murata Manufacturing Co. Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/00
CPC分类号： H03H9/6433
摘要： A ladder circuit type SAW filter device includes series arm resonators and parallel arm resonators that are defined by SAW resonators. Among the parallel arm resonators, a first parallel arm resonator that is connected to one of an input end and an output end and a second parallel arm resonator that is connected to a junction between two series arm resonators have the relationship of Cp1null2
摘要翻译：梯形电路型SAW滤波器件包括由SAW谐振器限定的串联臂谐振器和并联臂谐振器。在并联臂谐振器中，连接到输入端和输出端之一的第一并联臂谐振器和连接到两个串联臂谐振器之间的结的第二并联臂谐振器具有Cp1x2

7. 发明申请

US20020057036A1 SURFACE ACOUSTIC WAVE DEVICE 有权
标题翻译：表面声波设备
公开(公告)号：US20020057036A1
公开(公告)日：2002-05-16
申请号：US09953720
申请日：2001-09-17
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi , Toshiaki Takata , Tatsurou Nagai , Shuji Yamato
IPC分类号： H01L041/04
CPC分类号： H03H9/6436 , H03H9/0222 , H03H9/14538 , H03H9/25 , H03H9/6483
摘要： A surface acoustic wave device is arranged such that surface acoustic wave energy is trapped substantially perpendicularly to the surface acoustic wave propagation direction. At least one interdigital transducer having a plurality of electrode fingers and first and second bus bar electrodes is located on a piezoelectric substrate on which a surface acoustic wave is excited, and has an anisotropy index null of less than about null1 in the propagation direction. The electrode fingers each have a film thickness of not less than about 0.04null in which null is the wavelength of the surface acoustic wave. At least a portion of the first and second bus bar electrodes have a thickness that is larger than that of each electrode finger.
摘要翻译：表面声波装置被布置成使得表面声波能量基本上垂直于声表面波传播方向被捕获。具有多个电极指和第一和第二汇流条电极的至少一个叉指换能器位于其上激励表面声波并且在传播方向上具有小于约-1的各向异性指数γ的压电基板上。电极指各自具有不小于约0.04兰姆的膜厚度，其中羔羊是表面声波的波长。第一和第二汇流条电极的至少一部分的厚度大于每个电极指的厚度。

8. 发明申请

US20010013817A1 Surface acoustic wave filter 有权
公开(公告)号：US20010013817A1
公开(公告)日：2001-08-16
申请号：US09808683
申请日：2001-03-15
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： H03H009/64
CPC分类号： H03H9/6483 , H03H9/25 , Y10T29/42
摘要： A surface acoustic wave filter has a plurality of interdigital transducers arranged in a ladder circuit structure. Each of the interdigital transducers has a first comb-shaped electrode and a second comb-shaped electrode, each of which has a plurality of electrode fingers and a bus bar connected to first ends of the plurality of electrode fingers. The first and second comb-shaped electrodes interdigitate with each other so that second ends of the plurality of electrode fingers of the first comb-shaped electrode extend toward the bus bar of the second comb-shaped electrode. A gap is created in at least one of the interdigital transducers to cause a ripple in the pass band of the surface acoustic wave filter such that the ripple increases the steepness of the filter characteristics at the high frequency shoulder of the pass band. The gap is defined between the bus bar of the first comb-shaped electrode and the second ends of the plurality of electrode fingers of the second comb-shaped electrode. The gap width should be in the range of about 0.50 null to about 4 null, wherein null is a wavelength of a surface acoustic wave to be excited on the piezoelectric substrate.

9. 发明申请

US20010012237A1 Surface acoustic wave filter and communication device 失效
标题翻译：表面声波滤波器和通信装置
公开(公告)号：US20010012237A1
公开(公告)日：2001-08-09
申请号：US09778180
申请日：2001-02-07
申请人： Murata Manufacturing Co., Ltd.
发明人： Norio Taniguchi
IPC分类号： G01V001/00
CPC分类号： H03H9/14526 , H03H9/0028
摘要： A surface acoustic wave filter includes a piezoelectric substrate and a plurality of surface acoustic wave resonators mounted on the piezoelectric substrate. The plurality of surface acoustic wave resonators are connected so as to constitute a lattice-type circuit having series-arm resonators and lattice-arm resonators, and a null value of the lattice-arm resonators and a null value of the series-arm resonators are made different from each other.
摘要翻译：表面声波滤波器包括压电基板和安装在压电基板上的多个表面声波谐振器。多个表面声波谐振器被连接成构成具有串联臂谐振器和晶格臂谐振器的格子型电路，并且晶格臂谐振器的伽马值和串联臂谐振器的伽马值是彼此不同。

10. 发明申请

US20010011932A1 Surface acoustic wave filter 有权
标题翻译：表面声波滤波器
公开(公告)号：US20010011932A1
公开(公告)日：2001-08-09
申请号：US09778195
申请日：2001-02-07
申请人： Murata Manufacturing Co., Ltd.
发明人： Miki Takamiya , Norio Taniguchi
IPC分类号： H03H009/64
CPC分类号： H03H9/6483 , H03H9/1452
摘要： A surface acoustic wave filter includes a piezoelectric substrate, and at least two series arm resonators and at least one parallel arm resonator each constituted by a one-port surface acoustic wave resonator, disposed on the piezoelectric substrate. The at least two series arm resonators and at least one parallel arm resonator are connected to define a ladder-type circuit. Each of the at least two series arm resonators includes an interdigital transducer weighted by apodization, and the apodizations for the at least two series arm resonators are different from each other.
摘要翻译：声表面波滤波器包括压电基片和至少两个串联臂谐振器和至少一个平行臂谐振器，每个至少一个并联臂谐振器均由设置在压电基片上的单端口声表面波谐振器构成。连接至少两个串联臂谐振器和至少一个并联臂谐振器以限定梯形电路。至少两个串联臂谐振器中的每一个包括通过变迹加权的叉指换能器，并且用于至少两个串联臂谐振器的变迹彼此不同。

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