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1. 发明授权

EP0878902B1 Oscillator circuit 失效
公开(公告)号：EP0878902B1
公开(公告)日：2002-01-16
申请号：EP97307967.6
申请日：1997-10-07
申请人： FUJITSU LIMITED , Fujitsu Towa Electron Limited
发明人： Satoh, Yoshio , Ikata, Osamu , Matsuda, Takashi , Takahashi, Yoshitaka, c/o Fujitsu Towa Elec. Ltd. , Avramov, Ivan Dimitrov
IPC分类号： H03B5/32 , H03H9/64
CPC分类号： H03H9/6483 , H03B5/326

2. 发明公开

EP0957577A2 Surface acoustic wave device 审中-公开
标题翻译： Oberflächenwellenanordnung
公开(公告)号：EP0957577A2
公开(公告)日：1999-11-17
申请号：EP98117526.8
申请日：1998-09-16
申请人： FUJITSU LIMITED
发明人： Ikata, Osamu , Satoh, Yoshio , Matsuda,Takashi , Tsutsumi, Jun , Miyamoto, Satoshi
IPC分类号： H03H9/05 , H03H9/64
CPC分类号： H03H9/1071 , H03H2250/00
摘要： A surface acoustic wave device includes a plurality of surface acoustic wave filter chips having external connection terminals and a package accommodating the plural surface acoustic wave filter chips. The package is provided with a plurality of terminals for connection with the surface acoustic wave filter chips, and one of the external connection terminals of a first one of the surface acoustic wave filter chips is connected with one of the terminals of the package via a second one of the surface acoustic wave filter chips.
摘要翻译：表面声波装置包括具有外部连接端子的多个表面声波滤波器芯片和容纳多个声表面波滤波器芯片的封装。该封装设置有多个用于与表面声波滤波器芯片连接的端子，并且第一个声表面波滤波器芯片的外部连接端子中的一个外部连接端子通过第二个一个表面声波滤波器芯片。

3. 发明公开

EP1193869A3 Surface-acoustic-wave filter 失效
公开(公告)号：EP1193869A3
公开(公告)日：2002-08-07
申请号：EP01128369.4
申请日：1992-10-27
申请人： FUJITSU LIMITED
发明人： Satoh, Yoshio , Ikata, Osamu , Miyashita, Tsutomu , Matsuda, Takashi , Takamatsu, Mitsuo
IPC分类号： H03H9/64
CPC分类号： H03H9/6436 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A band-pass filter comprises a pair of SAW filters F1, F2, the SAW filters having respective pass bands with band centre frequencies and each including SAW resonators connected in a multiple-ladder formation, a pair of input terminals and a pair of output terminals. The first SAW filter F1 includes a series-arm SAW resonator Rs0 located at a first stage of the first SAW filter, and a parallel-arm SAW resonator Rp connected to the series-arm SAW resonator, and the second SAW filter F2 includes a parallel-arm SAW resonator Rp0 located at a first stage of this second SAW filter and a series-arm SAW resonator Rs connected to the parallel-arm SAW resonator Rp0 located at the first stage of the second SAW filter. A pair of band pass filter input terminals T 0 are commonly connected to the input terminals of the pair of SAW filters, pairs T 1 , T 2 of band pass filter output terminals are respectively connected to the output terminals of the pair of SAW filters; and a line S used for phase rotation is connected in series between one of the pair of input terminals and the second SAW filter F2. An impedance-matching circuit can also be used.

4. 发明公开

EP1193870A2 Surface-acoustic-wave filter 失效
标题翻译：表面声波滤波器
公开(公告)号：EP1193870A2
公开(公告)日：2002-04-03
申请号：EP01128370.2
申请日：1992-10-27
申请人： FUJITSU LIMITED
发明人： Satoh, Yoshio , Ikata, Osamu , Miyashita, Tsutomu , Matsuda, Takashi , Takamatsu, Mitsuo
IPC分类号： H03H9/64
CPC分类号： H03H9/6436 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A SAW bandpass filter having a predetermined pass-band characteristic comprises a plurality of SAW resonators R1-R5 connected in a ladder formation in at least two series arms 61; 61a, 61b and at least two parallel arms 62-64, wherein all the resonators are formed on a single piezoelectric substrate 82.

5. 发明公开

EP1193869A2 Surface-acoustic-wave filter 失效
标题翻译：表面声波滤波器
公开(公告)号：EP1193869A2
公开(公告)日：2002-04-03
申请号：EP01128369.4
申请日：1992-10-27
申请人： FUJITSU LIMITED
发明人： Satoh, Yoshio , Ikata, Osamu , Miyashita, Tsutomu , Matsuda, Takashi , Takamatsu, Mitsuo
IPC分类号： H03H9/64
CPC分类号： H03H9/6436 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A band-pass filter comprises a pair of SAW filters F1, F2, the SAW filters having respective pass bands with band centre frequencies and each including SAW resonators connected in a multiple-ladder formation, a pair of input terminals and a pair of output terminals. The first SAW filter F1 includes a series-arm SAW resonator Rs0 located at a first stage of the first SAW filter, and a parallel-arm SAW resonator Rp connected to the series-arm SAW resonator, and the second SAW filter F2 includes a parallel-arm SAW resonator Rp0 located at a first stage of this second SAW filter and a series-arm SAW resonator Rs connected to the parallel-arm SAW resonator Rp0 located at the first stage of the second SAW filter. A pair of band pass filter input terminals T 0 are commonly connected to the input terminals of the pair of SAW filters, pairs T 1 , T 2 of band pass filter output terminals are respectively connected to the output terminals of the pair of SAW filters; and a line S used for phase rotation is connected in series between one of the pair of input terminals and the second SAW filter F2. An impedance-matching circuit can also be used.
摘要翻译：带通滤波器包括一对SAW滤波器F1，F2，SAW滤波器具有带中心频率的各个通带，并且每个SAW滤波器包括以多梯形结构连接的SAW谐振器，一对输入端子和一对输出端子。第一SAW滤波器F1包括位于第一SAW滤波器的第一级的串联臂SAW谐振器Rs0和连接到串联臂SAW谐振器的并联臂SAW谐振器Rp，并且第二SAW滤波器F2包括并联臂SAW谐振器Rp，位于该第二SAW滤波器的第一级处的臂式SAW谐振器Rp0和与位于第二SAW滤波器的第一级处的并联臂SAW谐振器Rp0连接的串联臂SAW谐振器Rs。一对带通滤波器输入端T0共同连接到一对SAW滤波器的输入端，带通滤波器输出端对T1，T2分别连接到一对SAW滤波器的输出端; 并且用于相位旋转的线S串联连接在一对输入端子中的一个与第二SAW滤波器F2之间。阻抗匹配电路也可以使用。

6. 发明公开

EP0899874A3 Surface acoustic wave filter of multistage connection type 失效
标题翻译：多级连接型表面声波滤波器
公开(公告)号：EP0899874A3
公开(公告)日：1999-12-29
申请号：EP98400977.9
申请日：1998-04-22
申请人： FUJITSU LIMITED
发明人： Tsutsumi, Jun , Ikata, Osamu , Satoh, Yoshio
IPC分类号： H03H9/64
CPC分类号： H03H9/6433 , H03H9/14547 , H03H9/14567 , H03H9/1457 , H03H9/6459 , H03H9/6463 , H03H2250/00
摘要： The surface acoustic wave filter of multi-stage connection type includes : a plurality of surface acoustic wave filters (15, 16) formed on a piezoelectric substrate (100) and a connection section (8) for electrically connecting the surface acoustic wave filters in a cascade connection. Each of the surface acoustic wave filters comprises interdigital transducers (1, 12) with two signal terminals for electric input and output (respectively 1, 11), the interdigital transducer including an excitation section (6) for exciting a surface acoustic wave and two terminal sections (5, 7) disposed on both sides of the excitation section, the two terminal sections serving as input or output terminal for electric signal and ground terminal. One of the signal terminal sections is connected to the connection section, and the electrode area of that signal terminal section is adjusted so that a parasitic capacitance formed between the signal terminal section and a grounding point of the surface acoustic wave filter is less than or equal to 0.01 pF.
摘要翻译：多级连接型表面声波滤波器包括：形成在压电基片（100）上的多个表面声波滤波器（15,16）和用于将声表面波滤波器电连接在一起的连接部分（8）级联连接。每个表面声波滤波器包括具有用于电输入和输出（分别为1,11）的两个信号端子的叉指式换能器（1,12），叉指式换能器包括用于激励表面声波的激励部分（6）设置在激励部分两侧的部分（5,7），两个端子部分用作电信号的输入或输出端子和接地端子。其中一个信号端子部分连接到连接部分，并且该信号端子部分的电极面积被调整为使得在信号端子部分和表面声波滤波器的接地点之间形成的寄生电容小于或等于到0.01pF。

7. 发明公开

EP0448357A3 Surface-acoustic-wave filter having a plurality of electrodes 失效
标题翻译：具有多个电极的表面 - 声波滤波器
公开(公告)号：EP0448357A3
公开(公告)日：1991-12-04
申请号：EP91302376.8
申请日：1991-03-19
申请人： FUJITSU LIMITED
发明人： Satoh, Yoshio , Ikata, Osamu , Miyashita, Tsutomu , Takamatsu, Mitsuo , Matsuda, Takashi
IPC分类号： H03H9/64 , H03H9/145 , H03H9/02
CPC分类号： H03H9/1455 , H03H9/6426
摘要： A SAW device comprises a substrate (1), input and output interdigital electrodes (2 M , 2 M-1 , 2 M- ₂, . . ., 3 M , 3 M-1 , 3 M-2 , . . .) provided on the substrate alternately to form a row of electrodes, and a pair of open strip reflectors (4) disposed at both ends of the row, the input interdigital electrodes having a first pair number (iN⁰, iN¹, iN², . . .) representing the number of pairs of opposing finger electrodes forming the input electrode, the output interdigital electrodes having a second pair number (oN⁰, oN¹, oN², . . . ) representing the number of pairs of opposing finger electrodes forming the output electrode, wherein the first pair number and second pair number are set different in the adjacent input and output electrodes with a predetermined ratio therebetween, the first pair number is changed in each input electrodes in the row, and the second pair number is changed in each output electrodes in the row.

8. 发明公开

EP0448357A2 Surface-acoustic-wave filter having a plurality of electrodes 失效
标题翻译： AkustischerOberflächenwellenfiltermit mehreren Elektroden。
公开(公告)号：EP0448357A2
公开(公告)日：1991-09-25
申请号：EP91302376.8
申请日：1991-03-19
申请人： FUJITSU LIMITED
发明人： Satoh, Yoshio , Ikata, Osamu , Miyashita, Tsutomu , Takamatsu, Mitsuo , Matsuda, Takashi
IPC分类号： H03H9/64 , H03H9/145 , H03H9/02
CPC分类号： H03H9/1455 , H03H9/6426
摘要： A SAW device comprises a substrate (1), input and output interdigital electrodes (2 M , 2 M-1 , 2 M- ₂, . . ., 3 M , 3 M-1 , 3 M-2 , . . .) provided on the substrate alternately to form a row of electrodes, and a pair of open strip reflectors (4) disposed at both ends of the row, the input interdigital electrodes having a first pair number (iN⁰, iN¹, iN², . . .) representing the number of pairs of opposing finger electrodes forming the input electrode, the output interdigital electrodes having a second pair number (oN⁰, oN¹, oN², . . . ) representing the number of pairs of opposing finger electrodes forming the output electrode, wherein the first pair number and second pair number are set different in the adjacent input and output electrodes with a predetermined ratio therebetween, the first pair number is changed in each input electrodes in the row, and the second pair number is changed in each output electrodes in the row.
摘要翻译： SAW器件包括基板（1），交替地提供在基板上的输入和输出叉指电极（2M，2M-1,2M-2，...，3M，3M-1,3M-2，...）形成一排电极，以及设置在该行的两端的一对开放条形反射器（4），该输入叉指电极具有第一对数量（iN 0，i N 1，i N 2）。代表形成输入电极的相对指状电极对数，输出叉指电极具有第二对数（oN 0，o N 1，o N 2，...）形成输出电极的成对的相对的指状电极，其中第一对数量和第二对数量在相邻的输入和输出电极之间以预定的比例设定为不同，在该行中的每个输入电极中改变第一对数量，在行中的每个输出电极中改变第二对数。

9. 发明授权

EP0899874B1 Surface acoustic wave filter of multistage connection type 失效
标题翻译：多级SAW滤波器
公开(公告)号：EP0899874B1
公开(公告)日：2004-02-18
申请号：EP98400977.9
申请日：1998-04-22
申请人： FUJITSU LIMITED
发明人： Tsutsumi, Jun , Ikata, Osamu , Satoh, Yoshio
IPC分类号： H03H9/64
CPC分类号： H03H9/6433 , H03H9/14547 , H03H9/14567 , H03H9/1457 , H03H9/6459 , H03H9/6463 , H03H2250/00

10. 发明公开

EP1193870A3 Surface-acoustic-wave filter 失效
标题翻译：表面声波滤波器
公开(公告)号：EP1193870A3
公开(公告)日：2002-08-07
申请号：EP01128370.2
申请日：1992-10-27
申请人： FUJITSU LIMITED
发明人： Satoh, Yoshio , Ikata, Osamu , Miyashita, Tsutomu , Matsuda, Takashi , Takamatsu, Mitsuo
IPC分类号： H03H9/64 , H03H9/145
CPC分类号： H03H9/6436 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A SAW bandpass filter having a predetermined pass-band characteristic comprises a plurality of SAW resonators R1-R5 connected in a ladder formation in at least two series arms 61; 61a, 61b and at least two parallel arms 62-64, wherein all the resonators are formed on a single piezoelectric substrate 82.
摘要翻译：一个具有预定通带特性的SAW带通滤波器包括多个在至少两个串联臂61中以阶梯形式连接的SAW谐振器R1-R5; 61a，61b和至少两个并联臂62-64，其中所有谐振器形成在单个压电基板82上。

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