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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：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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8.发明授权Antenna duplexer with receiving, transmitting, and antenna terminal groups separated planarly 有权具有接收，发射和天线端子组的天线双工器平面分离公开(公告)号：US06380823B1
公开(公告)日：2002-04-30
申请号：US09560968
申请日：2000-04-28
申请人： Osamu Ikata , Yoshio Satoh , Takashi Matsuda , Tokihiro Nishihara
发明人： Osamu Ikata , Yoshio Satoh , Takashi Matsuda , Tokihiro Nishihara
IPC分类号： H03H972
CPC分类号： H04B1/52 , H01L24/73 , H01L2223/6677 , H01L2224/05554 , H01L2224/32225 , H01L2224/48227 , H01L2224/73265 , H01L2924/15153 , H01L2924/15313 , H01L2924/16195 , H01L2924/30107 , H01L2924/3011 , H03H9/0576 , H03H9/72 , H03H9/725 , H03H2250/00 , H01L2924/00012 , H01L2924/00
摘要： An antenna duplexer including two duplexer elements each including two surface acoustic wave filters having different center pass band frequencies and connecting terminals for connecting the duplexer elements and external circuits, which are grouped into an antenna terminal group for connection to an external antenna, a receiving terminal group for connection to an external circuit and a transmitting terminal group for connection to an external circuit, wherein regions for disposing the antenna terminal group, the receiving terminal group and the transmitting terminal group are separated planarly.
摘要翻译： 一种天线双工器，包括两个双工器元件，每个双工器元件包括两个具有不同中心通带频率的表面声波滤波器，以及用于连接双工器元件和外部电路的连接端子，它们被分组成用于连接到外部天线的天线端子组，接收端子 用于连接到外部电路的组和用于连接到外部电路的发送端子组，其中用于布置天线端子组，接收端子组和发送端子组的区域被平面地分离。
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9.发明授权Surface acoustic wave device for band-pass filter having small insertion loss and predetermined pass-band characteristics for broad band 失效带通滤波器的表面声波装置具有小的插入损耗和宽带的预定通带特性
公开(公告)号：US5300902A
公开(公告)日：1994-04-05
申请号：US850835
申请日：1992-03-13
CPC分类号： H03H9/1455
摘要： A surface acoustic wave device comprises a pair of multiple-electrode surface acoustic wave elements that are mirror-symmetrically arranged and disposed on a piezoelectric substrate. Each of the multiple-electrode surface acoustic wave elements comprises a plurality of input/output inter-digital transducers and connected inter-digital transducers. The number of the input/output inter-digital transducers is equal to or smaller by one, than the number of the connected inter-digital transducers, so that insertion loss of the surface acoustic wave device can be reduced without increasing the size of the device.
摘要翻译： 表面声波装置包括一对反射对称地设置在压电基板上的多电极表面声波元件。 多电极表面声波元件中的每一个包括多个输入/输出数字间换能器和连接的数字间换能器。 输入/输出的数字间换能器的数量等于或小于所连接的数字间换能器的数目之一，从而可以在不增加装置的尺寸的情况下降低弹性表面波装置的插入损耗 。
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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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