公开(公告)号：US06784595B2

公开(公告)日：2004-08-31

申请号：US10229210

申请日：2002-08-28

申请人： Keigo Iizawa ,  Takashi Yamazaki ,  Shigeo Kanna

发明人： Keigo Iizawa ,  Takashi Yamazaki ,  Shigeo Kanna

IPC分类号： H01L4108

CPC分类号： H03H3/10 ,  H03H9/02551

摘要： The invention provides a method for adjusting the temperature-dependent property of a surface acoustic wave device is provided,, The method is appropriate for a temperature-dependent property that is expressed by a cubic function of a surface acoustic wave device using an in-plane rotated ST cut quartz crystal plate. The invention therefore provides a method for adjusting the temperature-dependent property of a surface acoustic wave device using an in-plane rotated ST cut quartz crystal plate having Euler angles of (0°, 113-135°, ±(40-49°)). The range of Euler angles is defined so that the temperature-dependent property of the surface acoustic wave device, using an in-plane rotated ST cut quartz crystal plate having the temperature-dependent property expressed by a cubic function, has an extreme value within the temperature range of −40 to +85° C., and the temperature-dependent property is rotated about the inflection point to minimize the frequency fluctuation within the operational temperature range by using appropriate regions.

摘要翻译： 本发明提供了一种用于调节表面声波器件的温度依赖性的方法，该方法适用于使用平面内的声表面波器件的三次函数表示的温度依赖性 旋转ST切割石英晶体板。 因此，本发明提供了一种使用具有（0°，113-135°，±（40-49°））欧拉角的平面内旋转的ST切割石英晶体板来调节声表面波器件的温度依赖性的方法， ）。 欧拉角的范围被定义为使用具有由三次函数表示的温度依赖性的平面内旋转的ST切割石英晶体板，声表面波器件的温度依赖特性在 温度范围为-40至+ 85℃，并且温度依赖性质围绕拐点旋转，以通过使用适当的区域使工作温度范围内的频率波动最小化。

公开(公告)号：US06774747B2

公开(公告)日：2004-08-10

申请号：US10211578

申请日：2002-08-05

申请人： Takashi Yamazaki ,  Keigo Iizawa ,  Shigeo Kanna

发明人： Takashi Yamazaki ,  Keigo Iizawa ,  Shigeo Kanna

IPC分类号： H03H900

CPC分类号： H03H9/02551

摘要： The invention provides a surface acoustic wave device which uses an in-plane rotated ST cut quartz crystal plate around the Z′-axis, and which has a large reflection coefficient of the Rayleigh wave. Comb teeth-like IDT electrodes are provided and reflectors to trap the Rayleigh wave are provided on both sides of the IDT electrodes on the principal surface of the in-plane rotated ST cut quartz crystal plate. The electrode width and pitch at the IDT electrodes are defined as Lt, Pt, the width and pitch of short-circuit electrodes at the reflectors as Lr, Pr, and the thickness of the IDT electrodes and the short-circuit electrodes side as Ht and Hr. If the electrode widths and pitches are set up so that either or both of Lt/Pt and Lr/Pr become 0.32±0.1, this enables maximizing the reflection coefficient and achieving the miniaturization of device itself by reducing the number of the short-circuit electrodes.

摘要翻译： 本发明提供一种表面声波装置，其使用围绕Z'轴的平面内旋转的ST切割石英晶体板，并且其具有大的瑞利波的反射系数。 提供梳齿状IDT电极，并且在面内旋转的ST切割石英晶体板的主表面上的IDT电极的两侧设置有用于捕获瑞利波的反射器。 IDT电极的电极宽度和间距被定义为Lt，Pt，反射器上的短路电极的宽度和间距为Lr，Pr，IDT电极和短路电极侧的厚度为Ht， 呃 如果设置电极宽度和间距，使得Lt / Pt和Lr / Pr中的任一个或两者变为0.32±0.1，则能够通过减少短路电极的数量来最大化反射系数并实现器件本身的小型化 。

公开(公告)号：US06856218B2

公开(公告)日：2005-02-15

申请号：US10329445

申请日：2002-12-27

申请人： Takashi Yamazaki ,  Keigo Iizawa ,  Shigeo Kanna

发明人： Takashi Yamazaki ,  Keigo Iizawa ,  Shigeo Kanna

IPC分类号： H03H9/02 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/25 ,  H03H9/02543

摘要： The invention provides an in-plane rotational ST-cut SAW resonator that is formed of an in-plane rotational ST-cut crystal plate having Eulerian angles of (0°, 113° to 135°, and ±(40° to 49°)). The in-plane rotational ST-cut SAW resonator can include an interdigital transducer (IDT) electrode for exciting a Rayleigh wave on the main surface. The ratio Lt/Pt of the electrode width Lt and the interelectrode pitch Pt of the IDT electrode is 0.5 or more and 0.65 or less. Accordingly, a reduction in the fluctuation in resonance frequency relative to the variations in an IDT electrode of a surface acoustic wave device by using the in-plane rotated ST-cut crystal plate around the Z′-axis can be achieved.

摘要翻译： 本发明提供一种面内旋转ST切割SAW谐振器，其由具有（0°，113°至135°和±（40°至49°））的欧拉角的平面内旋转ST切割晶体板形成， ）。 平面内旋转ST切割SAW谐振器可以包括用于激励主表面上的瑞利波的叉指式换能器（IDT）电极。 电极宽度Lt的比率Lt / Pt和IDT电极的电极间间距Pt为0.5以上且0.65以下。 因此，通过使用围绕Z'轴的平面内旋转的ST切割晶体板，可以实现相对于声表面波器件的IDT电极的变化的共振频率的波动的减小。

公开(公告)号：US07246520B2

公开(公告)日：2007-07-24

申请号：US10928103

申请日：2004-08-30

申请人： Makoto Eguchi ,  Shigeo Kanna

发明人： Makoto Eguchi ,  Shigeo Kanna

IPC分类号： G01P9/04

CPC分类号： G01C19/56

摘要： To provide a transducer that can detect the rotation of the transducer with high degree of accuracy, a transducer includes a pair of oscillating reeds extending in the Y-direction to generate a first oscillation to generate a Coriolis force corresponding to the rotation of the transducer, a beam extending in the X-direction and connected to the pair of oscillating reeds, a first detecting unit provided on the beam to detect deformation of the beam due to a second oscillation of the pair of oscillating reeds caused by the Coriolis force, a base member to support the beam, a first connecting device to connect one end of the beam and the base member, and a second connecting device to connect the other end of the beam and the base member.

摘要翻译： 为了提供能够高精度地检测换能器的旋转的换能器，换能器包括在Y方向上延伸的一对摆动簧片，以产生第一振荡以产生与换能器的旋转相对应的科里奥利力， 沿X方向延伸并连接到一对振荡簧片的光束，设置在光束上以检测由科里奥利力引起的一对振荡簧片的第二振荡引起的光束变形的第一检测单元，基部 用于支撑梁的构件，用于连接梁的一端和基座构件的第一连接装置，以及用于连接梁的另一端和基座构件的第二连接装置。

公开(公告)号：US20060108894A1

公开(公告)日：2006-05-25

申请号：US11272257

申请日：2005-11-09

申请人： Shigeo Kanna

发明人： Shigeo Kanna

IPC分类号： H03H9/17

CPC分类号： H03H9/02551 ,  H03H9/02543

摘要： A surface acoustic wave device including at least an interdigital transducer electrode that excites a Rayleigh surface acoustic wave on a surface of a crystal substrate and giving excitation in an upper limit mode of a stopband of the surface acoustic wave, wherein Euler angle representation (ψ, θ, Ψ) showing a cut angle and surface acoustic wave propagation direction of the crystal substrate is set as (0°, 0°≦θ≦180°, 0°

摘要翻译： 一种表面声波装置，至少包括指数式换能器电极，其在晶体基板的表面上激发瑞利声表面波，并且在声表面波的阻带的上限模式中产生激励，其中欧拉角表示（psi， （0°，θ0°，θ0°，θ0°，0°，0°，0°，...）

公开(公告)号：US20050061073A1

公开(公告)日：2005-03-24

申请号：US10909359

申请日：2004-08-03

申请人： Shigeo Kanna ,  Makoto Eguchi ,  Junichiro Shinozaki

发明人： Shigeo Kanna ,  Makoto Eguchi ,  Junichiro Shinozaki

IPC分类号： G01C19/56 ,  G01C19/5607 ,  H01L41/08 ,  H01L41/18 ,  G01P15/08

CPC分类号： G01C19/5607

摘要： To provide a vibratory gyroscope capable of detecting a change in posture with high accuracy without causing leaking of vibrations of vibrating bars via supporting units, a vibrator includes first to fourth vibrating bars extending parallel to each other substantially in the same plane, a bar-shaped beam extending substantially perpendicular to the four vibrating bars in the same plane and connected to the vibrating bars, bar-shaped supporting units to support the beam, driving units arranged in the third and fourth vibrating bars, and a detecting unit arranged the first vibrating bar.

摘要翻译： 为了提供能够以高精度检测姿势变化的振动陀螺仪，而不会引起振动棒经由支撑单元的振动的泄漏，振动器包括基本上在同一平面上彼此平行延伸的第一至第四振动杆，棒形 大致垂直于同一平面内的四个振动杆延伸并连接到振动杆的梁，支撑梁的棒状支撑单元，布置在第三和第四振动杆中的驱动单元以及设置在第一振动杆 。

公开(公告)号：US20050206277A1

公开(公告)日：2005-09-22

申请号：US11039810

申请日：2005-01-24

申请人： Makoto Eguchi ,  Shigeo Kanna ,  Masako Tanaka

发明人： Makoto Eguchi ,  Shigeo Kanna ,  Masako Tanaka

IPC分类号： G01C19/56 ,  G01C19/5607 ,  H01L41/09 ,  H01L41/18 ,  H03H9/02 ,  H03H9/10 ,  H03H9/13 ,  H03H9/15 ,  H03H9/17 ,  H03H9/21

CPC分类号： H03H9/02015 ,  G01C19/5607 ,  H03H9/21

摘要： Exemplary embodiments provide a tuning-fork-type vibrating reed having satisfactory frequency-temperature characteristics in a broad temperature range, i.e. a tuning-fork-type vibrating reed exhibiting small changes in frequency over a broad temperature range is provided. The tuning-fork-type vibrating reed according to exemplary embodiments of the present invention includes a GaPO4 piezoelectric material and a pair of arms having the thickness in Z′-axis direction, the width in X-axis direction, and the length in Y′-axis direction. The X-axis, the Y′-axis, and the Z′-axis are defined by rotating around the X-axis among the crystal X-axis, Y-axis, and Z-axis of the GaPO4 by an angle between 7.7 degrees and 11.3 degrees measured clockwise as viewed from the origin looking in the positive X-axis direction.

摘要翻译： 示例性实施例提供了在宽温度范围内具有令人满意的频率 - 温度特性的音叉式振弦，即提供了在宽温度范围内呈现小的频率变化的音叉型振动片。 根据本发明的示例性实施例的音叉型振动片包括GaPO 4压电材料和具有在Z'轴方向上的厚度的一对臂，X轴上的宽度 方向和Y'轴方向的长度。 通过在GaPO 4的晶体X轴，Y轴和Z轴中围绕X轴旋转来限定X轴，Y'轴和Z'轴， 在从正X轴方向看的原点观察时，顺时针测量7.7度和11.3度之间的角度。

公开(公告)号：US20050086995A1

公开(公告)日：2005-04-28

申请号：US10928103

申请日：2004-08-30

申请人： Makoto Eguchi ,  Shigeo Kanna

发明人： Makoto Eguchi ,  Shigeo Kanna

IPC分类号： G01C19/56 ,  G01C19/5628 ,  G01F25/00 ,  G01P21/00

CPC分类号： G01C19/56

摘要： To provide a transducer that can detect the rotation of the transducer with high degree of accuracy, a transducer includes a pair of oscillating reeds extending in the Y-direction to generate a first oscillation to generate a Coriolis force corresponding to the rotation of the transducer, a beam extending in the X-direction and connected to the pair of oscillating reeds, a first detecting unit provided on the beam to detect deformation of the beam due to a second oscillation of the pair of oscillating reeds caused by the Coriolis force, a base member to support the beam, a first connecting device to connect one end of the beam and the base member, and a second connecting device to connect the other end of the beam and the base member.

摘要翻译： 为了提供能够高精度地检测换能器的旋转的换能器，换能器包括在Y方向上延伸的一对摆动簧片，以产生第一振荡以产生与换能器的旋转相对应的科里奥利力， 沿X方向延伸并连接到一对振荡簧片的光束，设置在光束上以检测由科里奥利力引起的一对振荡簧片的第二振荡引起的光束变形的第一检测单元，基部 用于支撑梁的构件，用于连接梁的一端和基座构件的第一连接装置，以及用于连接梁的另一端和基座构件的第二连接装置。

公开(公告)号：US5703768A

公开(公告)日：1997-12-30

申请号：US620585

申请日：1996-03-22

申请人： Shigeo Kanna ,  Akihito Uetake

发明人： Shigeo Kanna ,  Akihito Uetake

IPC分类号： H02P6/00 ,  H02P6/08 ,  H02P6/12 ,  H02M3/24 ,  H02M1/12

CPC分类号： H02P6/085 ,  H02P6/34 ,  Y02P80/116

摘要： A motor control apparatus is provided which is capable of preventing large, accidental switching surges and suppressing switching surges that hamper efforts to improve the efficiency of PWM control inverters. The motor control apparatus has a PWM control inverter and axial position detector 3 that detects the position of the rotary axis of motor 14. Gate drive circuit 1 of the PWM control inverter comprises decoder circuit 4, correction gate circuit 5, and logical AND circuit 6. The correction gate circuit 5 sets a time difference at the change point for PWM signals and at the change point for commutation signals.

摘要翻译： 提供一种电动机控制装置，其能够防止大的意外开关浪涌和抑制开关浪涌，阻碍了提高PWM控制逆变器的效率的努力。 电动机控制装置具有检测电动机14的旋转轴的位置的PWM控制变换器和轴向位置检测器3. PWM控制逆变器的栅极驱动电路1包括解码电路4，校正门电路5和逻辑与电路6 校正门电路5在PWM信号的变化点和换向信号的变化点设定时间差。

公开(公告)号：US20100001617A9

公开(公告)日：2010-01-07

申请号：US11704103

申请日：2007-02-06

申请人： Shigeo Kanna

发明人： Shigeo Kanna

IPC分类号： H03H9/25

CPC分类号： H03H9/02551

摘要： A surface acoustic wave device includes: a quartz substrate; and at least a single-type IDT electrode provided on a surface of the quartz substrate for exciting a Rayleigh surface acoustic wave in the upper limit mode of the surface acoustic wave stop band with the following relationships satisfied; φ=0, 110°≦θ≦140°, and 38°≦|ψ|≦44°, when the quartz substrate cut angles and the surface acoustic wave propagation direction are represented by Euler angles (φ, θ, ψ), and wherein the electrode thickness relative to wavelength set such that H/λ≧0.1796η3−0.4303η2+0.2071η+0.0682, with the thickness of the IDT electrode defined as H, the width of an electrode IDT finger defined as d, the pitch between the electrode fingers of the IDT electrode as P, the wavelength of the surface acoustic wave as λ, and where η=d/P.

摘要翻译： 表面声波装置包括：石英基板; 以及设置在所述石英衬底的表面上的至少一个单一型IDT电极，用于激励所述表面声波阻带的上限模式中的瑞利表面声波，满足以下关系： 当石英衬底切割角度和表面声波传播方向由欧拉角（phi，θ，θ）表示时，phi = 0,110°<=θ<= 140°和38°<= | psi | psi），并且其中相对于波长设置的电极厚度使得H /λ> = 0.1796eta3-0.4303eta2 + 0.2071eta + 0.0682，其中IDT电极的厚度定义为H，电极IDT手指的宽度被定义为 d，IDT电极的电极指之间的间距为P，声表面波的波长为λ，eta = d / P。