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    Method of producing a MESFET semiconductor device having a recessed gate structure
    5.
    发明授权
    Method of producing a MESFET semiconductor device having a recessed gate structure 失效
    一种具有凹陷栅极结构的MESFET半导体器件的制造方法

    公开(公告)号：US06117713A

    公开(公告)日：2000-09-12

    申请号：US19163

    申请日：1998-02-06

    申请人： Koichi Hoshino ,  Tetsuya Katayama

    发明人： Koichi Hoshino ,  Tetsuya Katayama

    IPC分类号： H01L29/41 ,  H01L21/335 ,  H01L21/338 ,  H01L29/812

    CPC分类号： H01L29/66431 ,  H01L29/66848

    摘要： An insulating layer is formed on a semiconductor substrate, and a first resist layer having a first resist opening portion is formed on the insulating layer. Then, the insulating layer is etched thought the opening portion to expose the substrate. After removing the first resist layer, a second resist layer having second resist opening portions are formed. One of the second resist opening portions is provided to expose the substrate, and a recess is formed in the substrate through the opening portion. Further, the insulating layer exposed from the other of the second resist opening portions is removed. Then, an electrode member for gate, source, and drain electrodes is deposited on the substrate. As a result, variations in intervals between the gate and drain electrodes and between the gate and source electrodes can be reduced.

    摘要翻译： 在半导体基板上形成绝缘层，在绝缘层上形成具有第一抗蚀剂开口部的第一抗蚀剂层。 然后，认为绝缘层被认为是用于露出衬底的开口部分。 在去除第一抗蚀剂层之后，形成具有第二抗蚀剂开口部分的第二抗蚀剂层。 设置第二抗蚀剂开口部之一以露出基板，并且通过开口部在基板中形成凹部。 此外，从第二抗蚀剂开口部分中的另一个露出的绝缘层被去除。 然后，在基板上沉积用于栅极，源极和漏极的电极部件。 结果，可以减小栅极和漏极之间以及栅极和源极之间的间隔的变化。

    Analog switching circuit
    6.
    发明授权
    Analog switching circuit 失效
    模拟开关电路

    公开(公告)号：US5994744A

    公开(公告)日：1999-11-30

    申请号：US898752

    申请日：1997-07-23

    申请人： Tetsuya Katayama ,  Takeshi Miki ,  Junji Hayakawa ,  Hiroyuki Ban

    发明人： Tetsuya Katayama ,  Takeshi Miki ,  Junji Hayakawa ,  Hiroyuki Ban

    IPC分类号： H01L27/02 ,  H03K17/082 ,  H01L29/72

    CPC分类号： H03K17/0822 ,  H01L27/0251 ,  H01L27/0266 ,  H03K2217/0018

    摘要： An analog switching circuit comprises an insulated-gate field-effect transistor (Q20) having two n-type input-side and outpu-side semiconductor regions (201, 202) and a p-type semiconductor substrate region 203, for controlling conductiveness between an input terminal (IN) and an output terminal (OUT) based on a gate potential. A surge pulse detecting circuit (1020), responsive to an electric potential (Vi) of the input terminal (IN), produces a detection signal of a surge pulse equivalent to a forward bias of a PN junction formed between the semiconductor substrate region (203) and the input-side semiconductor region (201). A substrate potential setting circuit (1010) varies an electric potential of the semiconductor substrate region (203) in response to the electric potential (Vi) of the input terminal (IN) when aby detection signal is produced. Furthermore, a gate potential control circuit (1030) varies the gate potential of the insulated-gate field-effect transistor (Q20) in the same direction as the electric potential of the semiconductor substrate region (203) when the detection signal is produced.

    摘要翻译： 模拟开关电路包括具有两个n型输入侧和外侧半导体区域（201,202）和p型半导体衬底区域203的绝缘栅场效应晶体管（Q20），用于控制导电性 输入端子（IN）和输出端子（OUT）。 响应于输入端子（IN）的电位（Vi）的浪涌脉冲检测电路（1020）产生与在半导体衬底区域（203）之间形成的PN结的正向偏压相当的浪涌脉冲的检测信号 ）和输入侧半导体区域（201）。 基板电位设定电路（1010）响应于当产生aby检测信号时的输入端子（IN）的电位（Vi），改变半导体衬底区域（203）的电位。 此外，当产生检测信号时，栅极电位控制电路（1030）在与半导体衬底区域（203）的电位相同的方向上改变绝缘栅极场效应晶体管（Q20）的栅极电位。

    Composite bearing structure
    7.
    发明授权
    Composite bearing structure 失效
    复合轴承结构

    公开(公告)号：US5675201A

    公开(公告)日：1997-10-07

    申请号：US295623

    申请日：1994-08-24

    申请人： Osamu Komura ,  Tetsuya Katayama ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

    发明人： Osamu Komura ,  Tetsuya Katayama ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

    IPC分类号： F16C17/02 ,  F16C32/00 ,  F16C32/04 ,  F16C33/10 ,  F16C33/24 ,  F16C39/06 ,  H02K7/08 ,  H02K7/09

    CPC分类号： F16C32/0427 ,  F16C17/107 ,  F16C32/0431 ,  F16C33/107 ,  F16C39/063

    摘要： A composite bearing structure that has a high rotational accuracy and that can withstand high-speed rotation comprises first bearing means, second bearing means, third bearing means and fourth bearing means. The first bearing means supports a radial impact force which is applied to a rotator during rotation, and is formed by an inner ring (1) and an outer ring (2) consisting of silicon nitride ceramics sintered bodies. The second bearing means supports an axial load which is applied to the rotator while maintaining a prescribed clearance with the rotator, and is formed by a magnetic bearing body of two permanent magnets (12) and (13) which are thrust-directionally opposed to each other. The third bearing means maintains the radial rotational accuracy of the rotator, and is formed by a radial dynamic pressure producing groove (5) which is formed in a cylindrical surface of the inner ring (1). The fourth bearing means maintains the thrust-directional rotational accuracy of the rotator, and is formed by an air dome portion (100) which is confined in a semi-closed state by the inner ring (1), the outer ring (2) and a cover (4).

    摘要翻译： PCT No.PCT / JP94 / 00002 Sec。 371日期：1994年8月24日 102（e）日期1994年8月24日PCT 1994年1月4日PCT PCT。 公开号WO94 / 16233 PCT 日期1994年7月21日具有高旋转精度并能承受高速旋转的复合轴承结构包括第一轴承装置，第二轴承装置，第三轴承装置和第四轴承装置。 第一轴承装置支撑在旋转期间施加到旋转器的径向冲击力，并且由内环（1）和由氮化硅陶瓷烧结体组成的外圈（2）形成。 第二轴承装置支撑轴向载荷，该轴向载荷与旋转体保持规定的间隙，并且由两个永磁体（12）和（13）的磁轴承体形成，该永磁体与每个 其他。 第三轴承装置维持旋转体的径向旋转精度，并且由形成在内圈（1）的圆柱形表面中的径向动压产生槽（5）形成。 第四轴承装置保持旋转体的推力定向旋转精度，并且由内圈（1），外圈（2）和外圈（1）限定在半闭合状态的空气圆顶部（100）形成， 盖（4）。

    Slide member and method of manufacturing the same
    8.
    发明授权
    Slide member and method of manufacturing the same 失效
    滑动构件及其制造方法

    公开(公告)号：US5543371A

    公开(公告)日：1996-08-06

    申请号：US150189

    申请日：1993-11-30

    申请人： Tetsuya Katayama ,  Kaoru Murabe ,  Osamu Komura ,  Chihiro Kawai ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

    发明人： Tetsuya Katayama ,  Kaoru Murabe ,  Osamu Komura ,  Chihiro Kawai ,  Akira Yamakawa ,  Kenji Matsunuma ,  Norio Yasuoka ,  Matsuo Higuchi ,  Masaya Miyake

    IPC分类号： C04B35/01 ,  C04B35/584 ,  C04B35/593 ,  C04B41/00 ,  C04B41/80 ,  F16C33/04 ,  F16C33/16 ,  C04B35/587

    CPC分类号： C04B41/009 ,  C04B35/01 ,  C04B35/584 ,  C04B35/593 ,  C04B35/5935 ,  C04B41/0072 ,  C04B41/80 ,  F16C33/043 ,  F16C33/16 ,  C04B2111/00353 ,  Y10T428/252 ,  Y10T428/2991 ,  Y10T428/30

    摘要： A slide member has a sliding surface made of ceramic and has a surface roughness of not more than 1.0 .mu.m in center line average roughness Ra. ceramic includes a silicon nitride sintered body, which contains crystal grains having a linear density of at least 35 per 30 .mu.m in length with a boundary phase volume ratio of not more than 15 volume %, and which contains pores of not more than 20 .mu.m in maximum diameter in a content of not more than 3%. In a method of manufacturing the slide member, it is possible to ensure smoothness of the sliding surface by grinding the sliding surface and thereafter heating the ceramic in either inert gas or an atmospheric air. A slide member that can be used under severe sliding conditions of high-speed sliding or the like and that has excellent wear resistance is obtained. Even if the slide member is used for a sliding part of a compressor or the like which employs a fluorocarbon containing no chlorine as a cooling medium, it is possible to prevent the occurrence of seizure and abnormal wear on the sliding surface.

    摘要翻译： PCT No.PCT / JP93 / 00385 Sec。 371日期：1993年11月30日 102（e）日期1993年11月30日PCT 1993年3月29日PCT公布。 公开号WO93 / 2002500 日期：1993年10月14日滑动部件具有由陶瓷制成的滑动面，中心线平均粗糙度Ra的表面粗糙度不大于1.0μm。 陶瓷包括氮化硅烧结体，其包含长度为30μm以上的线密度为35以上，边界相体积比为15体积％以下，并且含有不大于20μm的孔的晶粒 m最大直径，含量不超过3％。 在制造滑动构件的方法中，可以通过研磨滑动表面并随后在惰性气体或大气中加热陶瓷来确保滑动表面的平滑度。 可以获得可以在高速滑动等的严酷滑动条件下使用且具有优异的耐磨性的滑动构件。 即使将滑动部件用于使用不含氯的碳氟化合物作为冷却介质的压缩机等的滑动部件，也可以防止滑动面发生卡滞和异常磨损。

    Microstrip array antenna
    9.
    发明授权
    Microstrip array antenna 有权
    微带阵列天线

    公开(公告)号：US08624784B2

    公开(公告)日：2014-01-07

    申请号：US12650012

    申请日：2009-12-30

    申请人： Akiyoshi Mizutani ,  Tetsuya Katayama ,  Kento Nakabayashi

    发明人： Akiyoshi Mizutani ,  Tetsuya Katayama ,  Kento Nakabayashi

    IPC分类号： H01Q1/38 ,  H01Q21/00

    CPC分类号： H01Q21/065 ,  H01Q21/0037

    摘要： The present invention provides, as one aspect, a microstrip array antenna including a dielectric substrate, on a back face of which a conductive grounding plate is formed, and a strip conductor formed on the dielectric substrate. The strip conductor comprises a feeding strip line which extends in an extension direction, and at least two radiation antenna elements. At least one of the antenna elements is connected with one side of the strip line, and at least one of the antenna elements is connected with the other side of the strip line. The longitudinal directions of the antenna elements are parallel to each other and are at an angle of other than 90° with respect to the extension direction. The strip line has a bending shape and fully extends in the extension direction so that the antenna elements are connected with the strip line at the same angle.

    摘要翻译： 本发明作为一个方面提供了一种微带阵列天线，其包括在其背面上形成有导电接地板的电介质基板和形成在电介质基板上的带状导体。 带状导体包括沿延伸方向延伸的馈送带状线和至少两个辐射天线元件。 天线元件中的至少一个与带状线的一侧连接，并且至少一个天线元件与带状线的另一侧连接。 天线元件的纵向方向彼此平行并且相对于延伸方向成90°以外的角度。 带状线具有弯曲形状并且在延伸方向上完全延伸，使得天线元件以相同的角度与带状线连接。

    Waveguide transmission line converter
    10.
    发明申请
    Waveguide transmission line converter 失效
    波导传输线转换器

    公开(公告)号：US20050280480A1

    公开(公告)日：2005-12-22

    申请号：US11156340

    申请日：2005-06-17

    申请人： Kent Nakabayashi ,  Tetsuya Katayama

    发明人： Kent Nakabayashi ,  Tetsuya Katayama

    IPC分类号： H01P5/107

    CPC分类号： H01P5/107

    摘要： A waveguide-transmission line converter has a waveguide including side walls which have inner corners at an open end of the waveguide. The inner corners are beveled to provide tapered inner surfaces. Even if a dielectric substrate is assembled out of alignment with the waveguide due to an assembling error, edges of a ground metal layer on the dielectric substrate are exposed from the beveled inner corners at the open end of the waveguide. The beveled inner corners keep the waveguide spaced widely from edges of a matching element on the dielectric substrate, preventing an electric field concentration from occurring between the waveguide and the matching element. The waveguide-transmission line converter has electromagnetic energy passing and reflecting characteristics prevented from varying.

    摘要翻译： 波导传输线路转换器具有波导，其包括在波导的开口端具有内角的侧壁。 内角是倾斜的，以提供锥形内表面。 即使由于组装误差而将电介质基板组装成与波导对准，电介质基板上的接地金属层的边缘在波导的开口端处从斜面的内角露出。 斜面的内角保持波导与电介质基底上的匹配元件的边缘广泛地间隔开，防止在波导和匹配元件之间发生电场集中。 波导传输线转换器具有防止变化的电磁能量通过和反射特性。