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公开(公告)号：US5874866A
公开(公告)日：1999-02-23
申请号：US937380
申请日：1997-09-25
CPC分类号： H03H9/6483 , H03B5/326
摘要： An oscillation circuit of phase-shift type includes a surface acoustic wave filter in a feedback circuit, the surface acoustic wave filter having first and second one-port surface acoustic wave resonators of different resonance frequencies connected in a ladder configuration. The oscillation circuit has a high C/N ratio with a large bandwidth of variable frequency and can be fabricated in a small size with low costs.
摘要翻译： 相移型振荡电路包括反馈电路中的表面声波滤波器，该声表面波滤波器具有以梯形结构连接的具有不同谐振频率的第一和第二单端口声表面波谐振器。 振荡电路具有高C / N比，具有可变频率的大带宽，并且可以以低成本制造成小尺寸。
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公开(公告)号：USRE37375E1
公开(公告)日：2001-09-18
申请号：US09158074
申请日：1998-09-22
IPC分类号： H03H964
CPC分类号： H03H9/6436 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A SAW filter includes a first SAW resonator having a pair of terminals and a predetermined resonance frequency (frp), the first SAW resonator being provided in a parallel arm of the SAW filter. A second SAW resonator has a pair of terminals and a predetermined resonance frequency (frs) approximately equal to a predetermined antiresonance frequency of the first SAW resonator (fap). The second SAW resonator is provided in a series arm of the SAW filter. An inductance element is connected in series to the first SAW resonator.
摘要翻译： SAW滤波器包括具有一对端子和预定谐振频率（frp）的第一SAW谐振器，第一SAW谐振器设置在SAW滤波器的并联臂中。 第二SAW谐振器具有大约等于第一SAW谐振器（fap）的预定反谐振频率的一对端子和预定谐振频率（frs）。 第二SAW谐振器设置在SAW滤波器的串联臂中。 电感元件与第一SAW谐振器串联连接。
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3.发明授权Surface acoustic wave device with an angle .alpha. related to specific piezoelectric substrates 失效具有与特定压电基板相关的角度α的表面声波装置
公开(公告)号：US6075426A
公开(公告)日：2000-06-13
申请号：US153336
申请日：1998-09-15
申请人： Jun Tsutsumi , Takashi Matsuda , Osamu Ikata , Yoshio Satoh
发明人： Jun Tsutsumi , Takashi Matsuda , Osamu Ikata , Yoshio Satoh
CPC分类号： H03H9/14552 , H03H9/6426
摘要： A surface acoustic wave device includes a piezoelectric substrate and plural IDTs for sending and receiving SAW mounted on the substrate. At least one of the IDTs includes a positive electrode including plural positive split electrodes (PSEs) and a negative electrode including plural negative split electrodes (NSEs). The PSEs and NSEs are arranged alternately. Each of the PSEs andNSEs has apair of electrode fingers. Two electrode fingers of each of the split electrodes are different in width in a direction in which a SAW is excited. An angle .alpha. determined by a direction transverse to the electrode fingers from one of the two electrode fingers having a smaller reflection factor toward the other one having a larger reflection factor and a direction in which the SAW excited by the IDT including the split electrodes travels to one of the IDTs for receiving the SAW is equal to or larger than 0.degree. and smaller than 90.degree., i.e., 0.ltoreq..alpha.
摘要翻译： 表面声波装置包括压电基板和用于发送和接收安装在基板上的SAW的多个IDT。 IDT中的至少一个包括包括多个正分裂电极（PSE）的正电极和包括多个负分离电极（NSE）的负电极。 PSEs和NSEs交替排列。 每个PSE和NSE都有电极指的孔。 每个分离电极的两个电极指在SAW被激发的方向上的宽度不同。 由横向于电极指的方向由具有较小反射系数的两个电极指的另一个具有较大反射系数的方向确定的角度α和由包括分离电极的IDT激发的SAW的方向传播到 用于接收SAW的IDT之一等于或大于0°并小于90°，即0 <α<90°。
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4.发明授权Packaged surface acoustic wave filter chips utilizing an on-chip relay terminal 失效使用片上继电器端子的封装声表面波滤波器芯片
公开(公告)号：US6023204A
公开(公告)日：2000-02-08
申请号：US153335
申请日：1998-09-15
申请人： Osamu Ikata , Yoshio Satoh , Takashi Matsuda , Jun Tsutsumi , Satoshi Miyamoto
发明人： Osamu Ikata , Yoshio Satoh , Takashi Matsuda , Jun Tsutsumi , Satoshi Miyamoto
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表面声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 一个声表面波滤波芯片。
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公开(公告)号：USRE40036E1
公开(公告)日：2008-01-29
申请号：US09925942
申请日：2001-08-10
CPC分类号： H03H9/6483 , H03H2250/00
摘要： A SAW filter includes a first SAW resonator having a pair of terminals and a predetermined resonance frequency (frp), the first SAW resonator being provided in a parallel arm of the SAW filter. A second SAW resonator has a pair of terminals and a predetermined resonance frequency (frs) approximately equal to a predetermined antiresonance frequency of the first SAW resonator (fap). The second SAW resonator is provided in a series arm of the SAW filter. An inductance element is connected in series to the first SAW resonator.
摘要翻译： SAW滤波器包括具有一对端子和预定谐振频率的第一SAW谐振器，第一SAW谐振器设置在SAW滤波器的并联臂中。 第二SAW谐振器具有大约等于第一SAW谐振器的预定反共振频率的一对端子和预定的谐振频率（f
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公开(公告)号：US06359368B1
公开(公告)日：2002-03-19
申请号：US09628276
申请日：2000-07-28
申请人： Jun Tsutsumi , Takashi Matsuda , Osamu Ikata , Yoshio Satoh
发明人： Jun Tsutsumi , Takashi Matsuda , Osamu Ikata , Yoshio Satoh
IPC分类号： H01L4108
CPC分类号： H03H9/02771
摘要： A surface acoustic wave reflector includes a piezoelectric substrate and a plurality of perturbation members arranged at a first period on the piezoelectric substrate. A plurality of free-surface regions where no perturbation members exist are formed in an arrangement of the perturbation members.
摘要翻译： 表面声波反射器包括压电基片和在压电基片上以第一周期布置的多个扰动元件。 在扰动构件的布置中形成多个不存在扰动构件的自由表面区域。
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公开(公告)号：US5955933A
公开(公告)日：1999-09-21
申请号：US640948
申请日：1996-05-15
CPC分类号： H03H9/6483 , H03H9/02944 , H03H9/145 , H03H9/64 , H03H9/02984
摘要： In a surface acoustic wave filter constituted with a ladder of resonators having a resonance frequency or an anti-resonance frequency, an input current flowing into a resonator in a parallel arm at the first stage from the input is so large as to deteriorate its lifetime caused from a heat generation by the resistance of the thin film wiring. As a measure to this problem, bonding wires (30, 31) connected onto points on connection electrodes (130, 131) for connecting an end of each of plural comb teeth electrodes 111 forming the resonators R.sub.s1 & R.sub.p1, or on a lead conductor (130-1) extended longitudinally from the connection electrode, are allotted at both sides of a center line (C1) of the plural comb teeth electrode group. Furthermore, a bonding wire may be connected substantially onto the center line C1 as well. It is preferable for the bonding wires to be located substantially symmetric with respect to the center line C1. It is preferable that the width along the longitudinal direction of the comb teeth electrodes is larger than a width of the comb teeth electrode.
摘要翻译： PCT No.PCT / JP95 / 02293 Sec。 371日期：1996年5月15日 102（e）日期1996年5月15日PCT提交1995年11月10日PCT公布。 公开号WO96 / 15587 日期：1996年5月23日在由具有共振频率或反共振频率的谐振器的梯形构成的表面声波滤波器中，从输入端流入到并联臂的第一级的并联臂的谐振器的输入电流大到 由于薄膜布线的电阻而产生的热量使其寿命恶化。 作为这个问题的一个措施，连接在连接电极（130,131）上的点上的接合线（30,31）用于连接形成谐振器Rs1和Rp1的多个梳齿电极111的端部，或引线导体 130-1）从连接电极纵向延伸，分配在多个梳齿电极组的中心线（C1）的两侧。 此外，接合线也可以基本上连接在中心线C1上。 接合线优选相对于中心线C1大致对称。 梳齿电极的沿长度方向的宽度优选大于梳齿电极的宽度。
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公开(公告)号：US5559481A
公开(公告)日：1996-09-24
申请号：US965774
申请日：1992-10-23
CPC分类号： H03H9/6436 , H03H9/0576 , H03H9/1071 , H03H9/6433 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
摘要： A SAW filter includes a first SAW resonator having a pair of terminals and a predetermined resonance frequency (f.sub.rp), the first SAW resonator being provided in a parallel arm of the SAW filter. A second SAW resonator has a pair of terminals and a predetermined resonance frequency (f.sub.rs) approximately equal to a predetermined antiresonance frequency of the first SAW resonator (f.sub.ap). The second SAW resonator is provided in a series arm of the SAW filter. An inductance element is connected in series to the first SAW resonator.
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公开(公告)号：US5179310A
公开(公告)日：1993-01-12
申请号：US672018
申请日：1991-03-19
CPC分类号： H03H9/1455 , H03H9/6426
摘要： A SAW device comprises a substrate, input and output interdigital electrodes provided on the substrate alternately to form a row of electrodes, and a pair of open strip reflectors disposed at both ends of the row, the input interdigital electrodes having a first pair number representing the number of pairs of opposing finger electrodes forming the input electrode, the output interdigital electrodes having a second pair number 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.
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公开(公告)号：USRE38278E1
公开(公告)日：2003-10-21
申请号：US09286328
申请日：1999-04-05
申请人： Yoshio Satoh , Osamu Ikata , Hidema Uchishiba , Takashi Matsuda , Tokihiro Nishihara , Mitsuo Takamatsu , Hajime Taniguchi
发明人： Yoshio Satoh , Osamu Ikata , Hidema Uchishiba , Takashi Matsuda , Tokihiro Nishihara , Mitsuo Takamatsu , Hajime Taniguchi
IPC分类号： H01L4108
CPC分类号： H03H3/08 , H03H9/14538 , Y10T29/42
摘要： This invention relates to a surface acoustic wave device and a production process thereof. An electrode is formed by alternately laminating a film of an aluminum alloy containing at least copper added thereto and a copper film on a piezoelectric substrate. While the particle size of the multi-layered electrode materials in kept small, the occurrence of voids in the film is prevented and life time of the surface acoustic wave device is elongated.
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