公开(公告)号：US4689586A

公开(公告)日：1987-08-25

申请号：US869979

申请日：1986-06-02

申请人： Jun Yamada ,  Akitsuna Yuhara ,  Takashi Shiba ,  Yuji Fujita

发明人： Jun Yamada ,  Akitsuna Yuhara ,  Takashi Shiba ,  Yuji Fujita

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/42

CPC分类号： H03H9/14505

摘要： A surface acoustic wave (SAW) device comprises a piezo-electric surface acoustic substrate, and plural sets of input/output interdigital electrodes disposed on the substrate. A phase shifter is provided between a sending electrode and a reflecting electrode included in the input or output interdigital electrodes for producing an electrical phase difference to implement a unidirectional electrode. The sending electrode and the reflecting electrode are mutually connected through the phase shifter including two pure reactance elements serially connected between the sending and the reflecting electrodes and a pure reactance element connected to the junction between the two serially connected reactance elements so as to form a T-circuit. When the two serially connected pure reactance elements are selected equal to each other, the operating frequency band is broadened. The phase shifter includes no ohmic resistance and thus is lossless.

摘要翻译： 表面声波（SAW）器件包括压电表面声学衬底和设置在衬底上的多组输入/输出叉指电极。 在发送电极和包括在输入或输出叉指电极中的反射电极之间提供移相器，用于产生电相差以实现单向电极。 发送电极和反射电极通过移相器相互连接，该移相器包括串联连接在发送电极和反射电极之间的两个纯电抗元件和连接到两个串联的电抗元件之间的接点的纯电抗元件，从而形成T 电路 当选择两个串联的纯电抗元件彼此相等时，工作频带变宽。 移相器不包含欧姆电阻，因此无损耗。

公开(公告)号：US20080231003A1

公开(公告)日：2008-09-25

申请号：US10586091

申请日：2005-01-14

申请人： Seiichi Moriyama ,  Hiroshi Satou ,  Jun Yamada ,  Takashi Shiba ,  Tomohiko Ikenoya ,  Jun Watanabe

发明人： Seiichi Moriyama ,  Hiroshi Satou ,  Jun Yamada ,  Takashi Shiba ,  Tomohiko Ikenoya ,  Jun Watanabe

IPC分类号： B62D1/20 ,  F16J15/16 ,  F16J3/04

CPC分类号： F16J3/041 ,  B60R13/0846 ,  B62D1/16

摘要： [Problem] A dust cover for a steering prevents offensive sounds from emitting during an operation of a steering wheel.[Means for Solving] A dust cover for a steering shaft according to the present invention includes: a bush 2 of low-frictional material, through which a steering shaft 20 penetrates; a plurality of bellows 3 made of rubber, provided in an axial direction of the steering shaft 20, and arranged between the bush 2 and a panel 19, for sealing the clearance; and an annular seal lip 4 in contact with the outer periphery of the steering shaft 20.

摘要翻译： [问题]用于转向的防尘罩防止在方向盘的操作期间发出的令人反感的声音。 具体实施方式根据本发明的用于转向轴的防尘罩包括：转向轴20穿过的低摩擦材料的衬套2; 多个由橡胶制成的波纹管3，设置在转向轴20的轴向上，并且布置在衬套2和面板19之间，用于密封间隙; 以及与转向轴20的外周接触的环形密封唇缘4。

公开(公告)号：US20050003855A1

公开(公告)日：2005-01-06

申请号：US10860325

申请日：2004-06-04

申请人： Toshiyuki Wada ,  Keisuke Fukamachi ,  Kenji Hayashi ,  Takashi Shiba ,  Norio Hosaka ,  Makoto Katagishi

发明人： Toshiyuki Wada ,  Keisuke Fukamachi ,  Kenji Hayashi ,  Takashi Shiba ,  Norio Hosaka ,  Makoto Katagishi

IPC分类号： H01P1/15 ,  H03H9/17 ,  H03H9/54 ,  H03H9/70 ,  H03H9/72 ,  H04B1/3822 ,  H04B1/50 ,  H04B1/18

CPC分类号： H04B1/0057 ,  H04B1/005 ,  H04B1/406 ,  H04B1/52

摘要： A multi-band transceiver has a function of sharing transmitted and received signals of multiple frequency bands by the same antenna. The multi-band transceiver mounts multiple filters that correspond to the multiple frequency bands and multiple amplifiers for amplifying the transmitted signals on the same substrate, and arranges the multiple filters in close vicinity to the amplifier in the order where the multiple filters are excellent in their temperature characteristic.

摘要翻译： 多频带收发器具有通过相同天线共享多个频带的发送和接收信号的功能。 多频带收发器安装多个对应于多个频带的滤波器和多个放大器，用于放大同一衬底上的发射信号，并将多个滤波器按放大器的附近排列，其中多个滤波器在它们的 温度特性。

公开(公告)号：US5905324A

公开(公告)日：1999-05-18

申请号：US517927

申请日：1995-08-22

申请人： Takashi Shiba ,  Yoshihiro Yamada ,  Akitsuna Yuhara ,  Minoru Moteki

发明人： Takashi Shiba ,  Yoshihiro Yamada ,  Akitsuna Yuhara ,  Minoru Moteki

IPC分类号： H03H9/145 ,  H03H9/64 ,  H04B1/69 ,  H04B1/707 ,  G10K11/36

CPC分类号： H03H9/6406

摘要： A surface acoustic wave device makes it possible to increase the electrode width without generating mass-electrical-loading and is capable of operating in a high-frequency band higher than or equal to the UHF band, and this surface acoustic way device may be used in a communication device to eliminate need for any down-converter which is indispensable to the conventional high-frequency communication device, and which is therefore capable of being manufactured at a reduced cost. The surface acoustic wave device is provided with an electrode structure meeting conditions represented by: s+m=(2n+1)L/(4k), where L is electrode period, not taking into consideration the polarity of an interdigital transducer, m is electrode line width, s is minimum electrode gap width, and n and k are natural numbers. The surface acoustic wave device is used as the demodulator of the communication device.

摘要翻译： 声表面波装置可以在不产生质量电荷的情况下增加电极宽度并且能够在高于或等于UHF频带的高频带中操作，并且该表面声学装置可以用于 通信装置，以消除对传统的高频通信装置不可缺少的任何下变换器的需要，因此能够以较低的成本制造。 表面声波装置具有满足由s + m =（2n + 1）L /（4k）表示的条件的电极结构，其中L是电极周期，不考虑叉指换能器的极性，m是 电极线宽度，s为最小电极间隙宽度，n和k为自然数。 声表面波装置用作通信装置的解调器。

公开(公告)号：US5837332A

公开(公告)日：1998-11-17

申请号：US690030

申请日：1996-07-31

申请人： Migaku Takahashi ,  Katsuya Yokoyama ,  Jun Yamada ,  Takashi Shiba

发明人： Migaku Takahashi ,  Katsuya Yokoyama ,  Jun Yamada ,  Takashi Shiba

IPC分类号： C23C14/22 ,  C23C16/44 ,  G11B5/012 ,  G11B5/31 ,  G11B5/84 ,  G11B5/85 ,  G11B5/851 ,  H01F41/30 ,  H01L39/24 ,  B06B1/00 ,  H03H9/00

CPC分类号： B82Y25/00 ,  B82Y40/00 ,  C23C14/22 ,  C23C16/4415 ,  G11B5/012 ,  G11B5/3163 ,  G11B5/8404 ,  G11B5/85 ,  G11B5/851 ,  H01F41/302 ,  H01L39/2496

摘要： A method and apparatus for preparing thin films, a device, an electronic and magnetic apparatus, an information recording and reproducing apparatus, an information processing apparatus and a crystal preparing method from the molten state. A thin film is prepared as the substrate or the surface of the substrate is being excited and characterized by a device having at least a substrate and a thin film with at least one layer prepared thereon and an electronic and magnetic apparatus having integration of the devices, wherein at least one layer of the thin film is prepared as the surface of the substrate is being excited. The recording and reproducing apparatus for recording and reproducing information is composed of an information memory medium device having a recording layer of the thin film prepared as the surface of the substrate is being excited and a recording head whose core is prepared as the surface of the substrate is being excited. An information processing apparatus for use in input, record, process and output of information is composed of an information memory medium device having a recording layer which is prepared as the surface of the substrate is being excited and a processing part having a semiconductor device with a thin film prepared as the surface of the substrate is being excited.

摘要翻译： 一种从熔融状态制备薄膜的方法和装置，装置，电子和磁性装置，信息记录和再现装置，信息处理装置和晶体制备方法。 制备薄膜作为衬底或者衬底的表面被激发并且通过具有至少一个衬底的薄膜和其上制备有至少一层的薄膜和具有这些器件集成的电子和磁性设备被激发并表征， 其中当衬底的表面被激发时，制备至少一层薄膜。 用于记录和再现信息的记录和再现装置由一个信息存储介质装置组成，该信息存储介质装置具有被激励的衬底表面所制备的薄膜的记录层，以及一个记录头，其芯准备为衬底的表面 正在兴奋 用于信息的输入，记录，处理和输出的信息处理装置由具有记录层的信息存储介质装置组成，该记录层是在被激励的基板的表面上准备的，并且具有半导体装置的处理部分具有 作为衬底表面制备的薄膜正在被激发。

公开(公告)号：US5729076A

公开(公告)日：1998-03-17

申请号：US452704

申请日：1995-05-30

申请人： Yoshihiro Yamada ,  Takashi Shiba ,  Katsumi Itoh

发明人： Yoshihiro Yamada ,  Takashi Shiba ,  Katsumi Itoh

IPC分类号： G01R29/22 ,  H03H9/02 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/14505 ,  G01R29/22 ,  H03H9/02755 ,  H03H9/0285 ,  H03H9/14508 ,  H03H9/14597

摘要： A surface acoustic wave device having a novel structure capable of restricting TTE and ripple noise on a frequency characteristics and group delay time characteristics thereof is provided under a condition by which acoustic reflection is suppressed when there is internal dissipation in the device and/or a peripheral circuit thereof. When the device includes a unidirectional interdigital transducer, it is possible to restrict ripple of the frequency characteristics and the group delay time characteristics and to reduce loss without using a phase shifter. By using the surface acoustic wave device according to the present invention, a communication apparatus can be improved in performance.

摘要翻译： 具有能够限制TTE和纹波噪声的新颖结构的表面声波器件在频率特性和组延迟时间特性上被提供在当器件中存在内部耗散和/或外设时抑制声反射的条件 电路。 当装置包括单向叉指式换能器时，可以限制频率特性和组延迟时间特性的波动，并且可以在不使用移相器的情况下减少损耗。 通过使用根据本发明的表面声波装置，可以提高通信装置的性能。

公开(公告)号：US4818961A

公开(公告)日：1989-04-04

申请号：US181700

申请日：1988-04-14

申请人： Toshimitsu Takahashi ,  Takashi Shiba ,  Yuji Fujita ,  Jun Yamada

发明人： Toshimitsu Takahashi ,  Takashi Shiba ,  Yuji Fujita ,  Jun Yamada

IPC分类号： H03H9/02 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/6493 ,  H03H9/14508

摘要： A group-type unidirectional surface acoustic wave filter composed of sending electrodes, reflecting electrodes and meander electrodes constituted by interdigital electrodes, respectively. As a phase shifter of the filter, a capacitive element is used. The geometrical configuration of the meander electrode is determined in accordance with geometrical phase difference. The filter enjoys low insertion loss with a simplified structure.

摘要翻译： 分别由发射电极，反射电极和由叉指电极构成的曲折电极组成的组型单向表面声波滤波器。 作为滤波器的移相器，使用电容元件。 曲折电极的几何结构根据几何相位差来确定。 该滤波器具有简单结构的低插入损耗。

公开(公告)号：US4760359A

公开(公告)日：1988-07-26

申请号：US763

申请日：1987-01-06

申请人： Takashi Shiba ,  Norio Hosaka ,  Takemitsu Buma ,  Jun Yamada

发明人： Takashi Shiba ,  Norio Hosaka ,  Takemitsu Buma ,  Jun Yamada

IPC分类号： H03H9/02 ,  H03H9/25

CPC分类号： H03H9/0285 ,  H03H9/25

摘要： A surface acoustic wave resonator has two solid-type interdigital transducers and two grating reflectors arranged on a piezoelectric substrate or on a surface acoustic wave substrate which contains a piezoelectric material and the reflectors are arranged outside these transducers. If the electrode pitch of the interdigital transducers is suitably different from the pitch of grating of the reflectors, ripples caused by the triple transit echo at frequencies other than the peak frequency are deviated so as to lie outside the stop band of the reflectors, so that spurious responses are suppressed. In this case, the number of electrode pairs Ni of the interdigital transducers should satisfy a relation, Ni.gtoreq..pi./.epsilon., wherein .epsilon. denotes a characteristic mechanical impedance mismatch contribution on the surface of the electrode and on the free surface in the interdigital transducers, so that a peak caused by the trapping of energy in the interdigital transducers is brought into agreement with a peak caused by the triple transit echo to decrease the losses and to increase the Q value.

摘要翻译： 表面声波谐振器具有两个固体型叉指式换能器和布置在压电基片上的两个光栅反射器或包含压电材料的表面声波基片，反射器设置在这些换能器之外。 如果叉指式换能器的电极间距适当地不同于反射器的光栅的间距，则在峰值频率以外的频率处由三次转接回波引起的波纹偏离，以便位于反射器的阻带之外，使得 杂散响应被抑制。 在这种情况下，叉指式换能器的电极对Ni的数量应满足关系式，其中，ε表示在电极表面上和叉指中的自由表面上的特征性机械阻抗失配贡献 换能器，使得由叉指式换能器中的能量捕获引起的峰值与由三通道回波引起的峰值相一致，以减少损耗并增加Q值。

公开(公告)号：US4728912A

公开(公告)日：1988-03-01

申请号：US809181

申请日：1985-12-16

申请人： Akitsuna Yuhara ,  Jyun Sasaki ,  Takashi Shiba ,  Jyun Yamada

发明人： Akitsuna Yuhara ,  Jyun Sasaki ,  Takashi Shiba ,  Jyun Yamada

IPC分类号： H03H3/08 ,  H03H9/02 ,  H03H9/145 ,  H03H9/64

CPC分类号： H03H9/6426 ,  H03H9/02779 ,  H03H9/14552

摘要： In an elastic surface wave device comprising a piezoelectric substrate, a first transducer group, and a second transducer group or groups located on one or both sides of the first transducer group to exchange elastic surface waves with the first transducer group, the second transducer group comprises a plurality of transducers sharing the same elastic surface wave propagation path. The geometrical central positions of the individual transducers making up the second transducer group are located symmetrically about the geometrical central position (0--0') of the entire second transducer group, with each pair of such symmetrically located transducers incorporating the same number of pairs. The delay time, that is, the time taken by elastic surface waves propagating between the centers of every two adjoining transducers, excluding the two outermost transducers, is constant (.tau.). The distance between the center of each of the two outermost transducers and that of the transducer adjoining the outermost transducer is determined such that the delay time taken between the two transducers is, if the number of pairs incorporated in the outermost transducer is an integer, equal to an odd-number multiple of one-half of the above-mentioned constant delay time (.tau.), or, if the number of pairs incorporated in the outermost transducer is not an integer, equal to an odd-number multiple of one-half of the above-mentioned constant delay time (.tau.), plus or minus a quater wavelength time.

摘要翻译： 在包括压电基板，第一换能器组和位于第一换能器组的一侧或两侧上的第二换能器组的弹性表面波装置中，与第一换能器组交换弹性表面波，第二换能器组包括 共享相同的弹性表面波传播路径的多个换能器。 构成第二换能器组的各个换能器的几何中心位置围绕整个第二换能器组的几何中心位置（0-0'）对称地定位，每对这样对称定位的换能器包含相同数量的对。 延迟时间，即除了两个最外面的换能器之外，在每两个相邻换能器的中心之间传播的弹性表面波所花费的时间是常数（τ）。 确定两个最外侧换能器中的每一个的中心与邻近最外侧换能器的换能器的中心之间的距离，使得如果在最外面的换能器中并入的对数为整数，则两个换能器之间所需的延迟时间是相等的 到上述恒定延迟时间（τ）的二分之一的奇数倍，或者如果并入最外的换能器中的对数不是整数，则等于一半的奇数倍 的上述恒定延迟时间（τ），加上或减去四分之一波长时间。

公开(公告)号：US07876031B2

公开(公告)日：2011-01-25

申请号：US12608843

申请日：2009-10-29

申请人： Takashi Shiba ,  Kazuo Tsubouchi ,  Kensei Uehara ,  Hiroyuki Nakase ,  Suguru Kameda ,  Yoji Isota ,  Yasuo Cho

发明人： Takashi Shiba ,  Kazuo Tsubouchi ,  Kensei Uehara ,  Hiroyuki Nakase ,  Suguru Kameda ,  Yoji Isota ,  Yasuo Cho

IPC分类号： H01L41/18

CPC分类号： H03H9/02015 ,  H03H3/02 ,  H03H3/08 ,  H03H9/02543 ,  Y10T29/42

摘要： A piezoelectric thin-film acoustic wave device formed of a piezoelectric thin film of AlN on the +C plane and having the polarization strength of not lower than 0.63×10−20 F/V and an information processing unit using the same are disclosed. This is the result of the inventors having studied the factors other than the C-axis orientation affecting the electromechanical coupling factor and developing a method of improving the electromechanical coupling factor in view of the occasional fact that the electromechanical coupling factor cannot be improved by improving the C-axis orientation and the electromechanical coupling factor required for the piezoelectric thin-film acoustic wave device is not obtained. In such a case, the receiving sensitivity of the receiving system may be deteriorated and the transmission strength of the transmission system is required to be increased undesirably having an adverse effect on the power saving efforts.

摘要翻译： 公开了一种由+ C面上的AlN的压电薄膜形成并且具有不低于0.63×10-20F / V的极化强度的压电薄膜声波器件和使用该压电薄膜声波器件的信息处理单元。 这是本发明人研究了影响机电耦合系数的C轴取向以外的因素的结果，并且考虑到机电耦合系数不能通过改善机电耦合系数而改进的偶然事实，开发改进机电耦合系数的方法 C轴取向和压电薄膜声波装置所需的机电耦合系数不能得到。 在这种情况下，接收系统的接收灵敏度可能恶化，并且传输系统的传输强度需要不期望地增加，对节电工作具有不利影响。