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1.发明授权
公开(公告)号：US4314215A
公开(公告)日：1982-02-02
申请号：US168324
申请日：1980-07-11
申请人： Shigeo Tanji , Noboru Wakatsuki , Hideki Tominaga
发明人： Shigeo Tanji , Noboru Wakatsuki , Hideki Tominaga
CPC分类号： H03H9/6496 , H03H9/02874 , H03H9/0296 , H03H9/058
摘要： A surface acoustic wave filter device in which a capacitative coupling means is provided to couple at least one of the terminals of the SAW input transducer to at least one of the terminals of the output transducer, in order to equalize the levels of signals which are induced on the pair of output terminals of said output transducer without assuming the form of surface acoustic waves. The stray inductive coupling which normally occurs between the input and output terminals of the SAW filter degrades filter performance. Since the inductive coupling to the two output terminals is normally unequal, the inductively coupled unfiltered signals cannot be completely rejected by a balanced differential amplifier. By equalizing the levels of unfiltered signals at the output terminal, effective rejection by a differential amplifier is possible.
摘要翻译： 一种表面声波滤波器装置，其中提供电容耦合装置以将SAW输入换能器的至少一个端子耦合到输出换能器的至少一个端子，以便均衡感应的信号电平 在所述输出换能器的一对输出端子上，而不采取表面声波的形式。 通常发生在SAW滤波器的输入和输出端子之间的杂散电感耦合会降低滤波器性能。 由于与两个输出端子的电感耦合通常是不相等的，电感耦合未滤波信号不能被平衡差分放大器完全拒绝。 通过均衡输出端子上未滤波信号的电平，差分放大器的有效抑制是可能的。
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公开(公告)号：US4426595A
公开(公告)日：1984-01-17
申请号：US341683
申请日：1982-01-22
申请人： Kuninori Kawaura , Sumio Yamada , Noboru Wakatsuki , Masaaki Ono , Shigeo Tanji , Yoshiro Fujiwara , Masanobu Yanagisawa
发明人： Kuninori Kawaura , Sumio Yamada , Noboru Wakatsuki , Masaaki Ono , Shigeo Tanji , Yoshiro Fujiwara , Masanobu Yanagisawa
CPC分类号： H03H9/02842 , H03H9/02866
摘要： An acoustic surface wave device comprises a piezoelectric substrate (1), an input transducer (2), an output transducer (3) and acoustical absorbent layer patterns (5, 6) for absorbing undesired acoustic surface waves and bulk waves (S.sub.4, S.sub.5). Each of the acoustical absorbent layer patterns (5, 6) has zigzag-shaped or triangular shaped edges, i.e., a recess portion (R.sub.1, R.sub.3) and a protruding portion (R.sub.2, R.sub.4). The recess portion has a further recess portion (R.sub.1 ', R.sub.3 ') which is formed diagonally with respect to the propagation path of acoustic surface waves.
摘要翻译： 声表面波装置包括用于吸收不需要的声表面波和体波的压电基片（1），输入换能器（2），输出换能器（3）和吸声层图案（5,6） 。 每个吸声层图案（5,6）都具有锯齿状或三角形边缘，即凹部（R1，R3）和突出部分（R2，R4）。 凹部具有相对于声表面波的传播路径对角地形成的另一凹部（R1'，R3'）。
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3.发明授权Surface acoustic device having multistrip coupler comprised of alternate coupled and uncoupled strips 失效具有多行耦合器的表面声学装置包括备用耦合和非耦合条
公开(公告)号：US4551695A
公开(公告)日：1985-11-05
申请号：US508546
申请日：1983-06-28
申请人： Shigeo Tanji , Noboru Wakatsuki
发明人： Shigeo Tanji , Noboru Wakatsuki
CPC分类号： H03H9/02771 , H03H9/643
摘要： A surface acoustic wave device comprising a first set of interdigital electrodes that generate surface acoustic waves, a second set of interdigital electrodes that receive and convert surface acoustic waves into electrical signals, and an intermediate electromechanical coupling element provided therebetween. The coupling element comprises a plurality of parallel strips formed on the surface of a piezoelectric substrate such as to receive and change the direction of propagation of the surface acoustic waves, each of these parallel strips being spaced at a predetermined distance from each other and connected therebetween in a given manner to obtain suitable stopband characteristics.
摘要翻译： 一种表面声波装置，包括产生表面声波的第一组叉指电极，接收并将表面声波转换成电信号的第二组交指电极，以及设置在它们之间的中间机电耦合元件。 耦合元件包括形成在压电基板的表面上的多个平行条，以便接收和改变表面声波的传播方向，这些平行条中的每一条彼此隔开预定的距离并连接在它们之间 以给定的方式获得合适的阻带特性。
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4.发明授权Piezoelectric transformer producing an output A.C. voltage with reduced distortion 失效压电变压器产生输出交流电压，具有减小的失真
公开(公告)号：US5371430A
公开(公告)日：1994-12-06
申请号：US57500
申请日：1993-05-06
申请人： Masuji Sato , Noboru Wakatsuki , Masanori Ueda , Hiroshi Hasegawa
发明人： Masuji Sato , Noboru Wakatsuki , Masanori Ueda , Hiroshi Hasegawa
IPC分类号： H01L41/107 , H01L41/08
CPC分类号： H01L41/107
摘要： A piezoelectric transformer comprises a piezoelectric substrate carrying thereon an input electrode structure provided on an upper major surface of the piezoelectric substrate for receiving an a.c. voltage for causing an excitation of an elastic wave in the substrate such that the elastic wave propagates through the substrate in a longitudinal direction, an output electrode structure provided on a lower major surface of the piezoelectric substrate for producing an output a.c. voltage by converting the elastic wave into an electric voltage, wherein the input electrode structure and the output electrode structure have a periodical structure in the longitudinal direction with a pitch corresponding to a wavelength of the elastic wave, and wherein at least one of the first and second electrode structures extend in the longitudinal direction from the first longitudinal edge to the second longitudinal edge substantially continuously.
摘要翻译： 一种压电变压器包括一个压电基板，其上带有一个输入电极结构，该输入电极结构设置在压电基板的上主表面上，用于接收一个直流电压。 使弹性波沿着纵向传播通过基板的输出电压结构的输出电极结构的输出电压结构的输出电极结构。 通过将弹性波转换成电压，其中，所述输入电极结构和所述输出电极结构在纵向方向上具有对应于所述弹性波的波长的间距的周期性结构，并且其中，所述第一和 第二电极结构基本上连续地从第一纵向边缘延伸到第二纵向边缘。
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公开(公告)号：US4420730A
公开(公告)日：1983-12-13
申请号：US314430
申请日：1981-10-23
申请人： Noboru Wakatsuki , Yuji Kojima , Masaaki Ono
发明人： Noboru Wakatsuki , Yuji Kojima , Masaaki Ono
CPC分类号： H03H9/76 , H03H9/02795 , H03H9/1452 , H03H9/1455 , H03H9/14573 , H03H9/6479 , H03H9/6496 , H03H9/72 , H03H9/02992 , H03H9/14547
摘要： A surface acoustic wave filter which comprises: a substrate of piezoelectric material; a multistrip coupler for changing the track of a signal comprising a plurality of parallel conductive strips; at least two transducers disposed on one side of the multistrip coupler; at least another two transducers disposed on the other side of the multistrip coupler. The latter two transducers facing the former two transducers. One pair of the transducers which face each other through the multistrip coupler constitutes input transducers while the other pair of the transducers constitutes output transducers.
摘要翻译： 一种表面声波滤波器，包括：压电材料的基板; 用于改变包括多个平行导电条的信号的轨迹的多段耦合器; 至少两个换能器设置在所述多段耦合器的一侧上; 至少另外两个换能器设置在多段耦合器的另一侧上。 后两个传感器面对前两个传感器。 通过多段耦合器彼此面对的一对换能器构成输入换能器，而另一对换能器构成输出换能器。
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公开(公告)号：US20060128177A1
公开(公告)日：2006-06-15
申请号：US11281949
申请日：2005-11-18
IPC分类号： H05K1/00
CPC分类号： H01H9/40 , H01H1/0036 , H01H9/42
摘要： An electrical contact device (X1) includes a first contactor with contact portions (C1, C2) and a second contactor with contact portions (C3, C4). The device (X1) also includes an electrical circuit having a branch path (YA) provided by the contact portions (C1, C3) and a branch path (YB) provided by the contact portions (C2, C4). When closed, the branch path (YA) has a smaller resistance, and the branch path (YB) a greater resistance. In a closing operation, the first and second contactors approach each other. Then the contact portion (C1) and the contact portion (C3) contact with each other after the contact portion (C2) and the contact portion (C4) contact with each other. In an opening operation, the first and second contactors separate from each other. Then the contact portion (C1) and the contact portion (C3) separate after the contact portion (C2) and the contact portion (C4) separate.
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公开(公告)号：US07053739B2
公开(公告)日：2006-05-30
申请号：US10725573
申请日：2003-12-03
IPC分类号： H01H9/30
CPC分类号： H01H9/42 , H01H1/0036 , H01H9/40 , H01H2001/0057
摘要： An electrical contacting device includes a plurality of current paths connected in parallel to each other, and a plurality of electrical contact points each having a first contact and a second contact that are mechanically opened and closed. Each current path is provided with a corresponding one of the contact points. For prevention of the occurrence of arc discharge at the contact points, each current path has its electrical characteristics adjusted in order not to allow the passage of the minimum discharge current.
摘要翻译： 电接触装置包括彼此并联连接的多个电流路径，以及多个电接触点，每个电接触点具有机械地打开和关闭的第一接触和第二接触。 每个电流路径都设有相应的一个接触点。 为了防止在接触点处发生电弧放电，每个电流路径的电特性被调整以便不允许最小放电电流通过。
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公开(公告)号：US06177756B1
公开(公告)日：2001-01-23
申请号：US09223282
申请日：1998-12-30
申请人： Masanori Yachi , Noboru Wakatsuki , Sumio Yamada
发明人： Masanori Yachi , Noboru Wakatsuki , Sumio Yamada
IPC分类号： H01L4108
CPC分类号： G01C19/5607
摘要： In a piezoelectric gyro, an amplifier 42 receives and amplifies a detected signal from detecting electrodes 19 through 26, and a bandpass filter 43 extracts only a detection-side resonant frequency component from the amplified signal. The extracted resonant frequency component is phase-shifted by a phase-shifting circuit 44, and the resultant signal is passed through a limiting resistor 45 to prepare a constant-current drive signal, and the drive signal is inputted to drive electrodes 11 through 18. As a result, the piezoelectric gyro oscillates self-excitedly at the detection-side resonant frequency. The present invention provides a piezoelectric gyro capable of maintaining a high sensitivity with respect to a change in temperature by improving detection sensitivity.
摘要翻译： 在压电陀螺仪中，放大器42接收并放大来自检测电极19至26的检测信号，带通滤波器43仅从放大信号中提取检测侧谐振频率分量。 所提取的谐振频率分量被移相电路44相移，并且所得到的信号通过限制电阻器45以制备恒流驱动信号，并且驱动信号被输入到驱动电极11至18。 结果，压电陀螺以检测侧共振频率自激振荡。 本发明提供一种能够通过提高检测灵敏度来维持相对于温度变化的高灵敏度的压电陀螺仪。
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公开(公告)号：US4967598A
公开(公告)日：1990-11-06
申请号：US233428
申请日：1988-08-18
IPC分类号： G01P15/08 , G01P15/105
CPC分类号： G01P15/105 , G01P15/0802 , G01P2015/0817 , Y10S73/03
摘要： An acceleration sensor including a cantilever beam having a free end to which a permanent magnet is attached. A pair of magnetic sensors, each comprising a barber-pole type magnetoresistive sensing element, is arranged in symmetrically spaced and opposed relationship and in a common plane extending parallel to the magnetic flux of the permanent magnet with respect to respective, opposite sides of the magnet. The cantilever is bent and the magnet is moved accordingly in response to an acceleration force, which is detected as outputs from the magnetoresistive sensing elements.
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公开(公告)号：US4583019A
公开(公告)日：1986-04-15
申请号：US613187
申请日：1984-05-23
申请人： Sumio Yamada , Yoshiro Fujiwara , Noboru Wakatsuki , Yuji Kojima
发明人： Sumio Yamada , Yoshiro Fujiwara , Noboru Wakatsuki , Yuji Kojima
CPC分类号： H03H9/177 , H03H9/02031 , H03H9/0547 , H03H9/1014
摘要： A piezoelectric resonator with a rectangular parallelepiped resonator. A lithium niobate single crystal is used as the resonator chip material. Each of the opposed main surfaces of the resonator chip is arranged to be a surface of a rotated Y-cut plate which is rotated 165.+-.5 degrees about an X-axis. The angle of the longitudinal direction of the resonator chip is arranged to be 90.+-.5 degrees with respect to the X-axis of the rotated Y-cut plate.
摘要翻译： 一种具有矩形平行六面体谐振器的压电谐振器。 使用铌酸锂单晶作为谐振器芯片材料。 谐振器芯片的相对的主表面中的每一个被布置为旋转的Y切割板的表面，其相对于X轴旋转165 +/- 5度。 谐振器芯片的纵向方向的角度相对于旋转的Y切割板的X轴设置为90 +/- 5度。
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