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123 条记录 (耗时 0.032 秒)

    Synthesis of pyrroles
    41.
    发明授权
    Synthesis of pyrroles 失效
    吡咯的合成

    公开(公告)号：US07034163B2

    公开(公告)日：2006-04-25

    申请号：US10656867

    申请日：2003-09-05

    申请人： Brian L. Pagenkopf ,  Ming Yu

    发明人： Brian L. Pagenkopf ,  Ming Yu

    IPC分类号： C07D207/06

    CPC分类号： C07D491/04 ,  C07D207/34 ,  C07D209/42 ,  C07F7/1892

    摘要： An improved and highly efficient method for the preparation of 2-R(R=alkyl, aryl, H) pyrroles from nitrites (RCN, R=alkyl, aryl) is described using Lewis acid activated donor-acceptor cyclopropanes to react with aliphatic, aromatic, branched, α,β-unsaturated, or otherwise functionalized nitrites in a cascade [3+2] dipolar cycloaddition, dehydration and tautomerization sequence.

    摘要翻译： 使用路易斯酸活化的供体 - 受体环丙烷描述从亚硝酸盐（RCN，R =烷基，芳基）制备2-R（R =烷基，芳基，H）吡咯的改进和高效的方法，以与脂族芳族 ，支链，α，β-不饱和或以其他方式官能化的亚硝酸盐在级联[3 + 2]偶极环加成，脱水和互变异构序列中。

    Phase stable waveguide assembly
    42.
    发明授权
    Phase stable waveguide assembly 有权
    相位稳定波导组件

    公开(公告)号：US06897746B2

    公开(公告)日：2005-05-24

    申请号：US10465226

    申请日：2003-06-20

    申请人： R. Glenn Thomson ,  Ming Yu

    发明人： R. Glenn Thomson ,  Ming Yu

    IPC分类号： H01P1/213 ,  H01P3/12 ,  H01P1/30

    CPC分类号： H01P3/12 ,  H01P1/2138

    摘要： A waveguide assembly for operation over a range of temperatures includes a waveguide body and a plurality of restraining strips coupled to the waveguide body. The waveguide body includes a pre-curved narrow sidewall of material having a first coefficient of thermal expansion (CTE). The restraining strips are coupled to the waveguide body at first and second lateral points on either side of the pre-curved narrow sidewall laterally and are spaced apart along the length of the waveguide body, and are made from a material having a second CTE much less than the first CTE. Thus, when the temperature of the waveguide assembly changes, the restraining strips maintain a substantially constant lateral distance between said first and second lateral points over the range of temperatures such that as the length of the waveguide varies with temperature, the curvature of the pre-curved narrow sidewall also changes, causing the effective large dimension of the waveguide assembly to vary such that the combination of said changes results in a constant phase length for said waveguide body.

    摘要翻译： 用于在一定温度范围内操作的波导组件包括波导体和耦合到波导体的多个限制条。 波导体包括具有第一热膨胀系数（CTE）的材料的预弯曲窄侧壁。 限制条在预弯曲的窄侧壁的任一侧上的第一和第二横向点在波导体上被耦合到波导体，并且沿着波导体的长度间隔开，并且由具有第二CTE的材料制成 比第一个CTE。 因此，当波导组件的温度改变时，限制条在温度范围内在所述第一和第二横向点之间保持基本上恒定的横向距离，使得随着波导的长度随着温度而变化， 弯曲的窄侧壁也改变，导致波导组件的有效大尺寸变化，使得所述变化的组合导致所述波导体的恒定相位长度。

    Diamond supported photocathodes for electron sources
    44.
    发明授权
    Diamond supported photocathodes for electron sources 失效
    用于电子源的金刚石负载光电阴极

    公开(公告)号：US06759800B1

    公开(公告)日：2004-07-06

    申请号：US09363926

    申请日：1999-07-29

    申请人： Andres Fernandez ,  Timothy Thomas ,  Xiaolan Chen ,  Steven T. Coyle ,  Ming Yu ,  Marian Mankos

    发明人： Andres Fernandez ,  Timothy Thomas ,  Xiaolan Chen ,  Steven T. Coyle ,  Ming Yu ,  Marian Mankos

    IPC分类号： H01J4006

    CPC分类号： B82Y10/00 ,  H01J1/34

    摘要： A photocathode as a source of electron beams, having a substrate of optically transmissive diamond and a photoemitter. A photocathode with a single emitting region provides a single electron beam; a photocathode with multiple emitting regions provides multiple electron beams. The photoemitter is positioned on the side of the diamond substrate opposite the surface on which the illumination is incident, and has an irradiation region at the contact with the optically transmissive diamond, and an emission region opposite the irradiation region, these regions being defined by the path of the illumination. The diamond substrate at the irradiation region/emission region interface conducts heat away from this focused region of illumination on the photocathode. Alternately, a diamond film is used for heat conduction, while another material is used as a substrate to provide structural support. The thermal conductivity of diamond is at least three orders of magnitude greater than that of fused silica, which is an alternative substrate material for photocathodes. This allows for efficient conduction of heat away from the irradiation region/emission region interface, and therefore allows higher currents to be achieved from the photocathode. This, in turn, permits higher throughput rates in applications including electron beam lithography.

    摘要翻译： 作为电子束源的光电阴极，具有透光金刚石和光电发射体的基底。 具有单个发射区域的光电阴极提供单个电子束; 具有多个发射区域的光电阴极提供多个电子束。 光发射器位于与照射入射的表面相对的金刚石基底的一侧，并且具有与光学透射金刚石接触的照射区域和与照射区域相对的发射区域，这些区域由 照明路径。 在照射区域/发射区域界面处的金刚石基底将热量远离该聚焦照明区域在光电阴极上。 或者，金刚石膜用于热传导，而另一种材料用作基底以提供结构支撑。 金刚石的热导率比熔融石英的热导率高至少三个数量级，熔融石英是光电阴极的替代基材。 这允许热量从照射区域/发射区域界面有效地传导，因此允许从光电阴极获得更高的电流。 这反过来又允许在包括电子束光刻的应用中更高的生产率。

    Display apparatus with reflective structure
    46.
    发明授权
    Display apparatus with reflective structure 有权

    公开(公告)号：US09995961B1

    公开(公告)日：2018-06-12

    申请号：US13766527

    申请日：2013-02-13

    申请人： Lu Bai ,  Ming Yu ,  Roger E. Yaffe

    发明人： Lu Bai ,  Ming Yu ,  Roger E. Yaffe

    IPC分类号： G02F1/1335

    CPC分类号： G02F1/133603 ,  G02F1/133605

    摘要： A display apparatus is provided. The display apparatus includes a light source. The display apparatus includes a display target configured to receive light from the light source. The display target displays an image using at least a portion of the light received from the light source. The display apparatus includes a first reflective structure configured to reduce an outgoing angle of at least a portion of the light from the light source. The display apparatus includes a second reflective structure configured to longitudinally translate at least a portion of the light from at least one of the light source and the first reflective structure toward the display target.

    Coaxial filter with elongated resonator
    48.
    发明授权
    Coaxial filter with elongated resonator 有权
    带细长谐振器的同轴滤波器

    公开(公告)号：US09509031B2

    公开(公告)日：2016-11-29

    申请号：US13900822

    申请日：2013-05-23

    申请人： Qiang Shi ,  Ming Yu

    发明人： Qiang Shi ,  Ming Yu

    IPC分类号： H01P1/205 ,  H01P1/202

    CPC分类号： H01P1/2053 ,  H01P1/202 ,  H01P1/207

    摘要： A microwave filter has a housing defining an inner cavity. A first resonator is positioned in a first portion of the inner cavity. A second resonator is positioned in a second portion of the inner cavity. A third resonator is positioned in a third portion of the inner cavity. The first resonator and the third resonator are cross-coupled via an iris. The second resonator is elongated and is coupled to the first resonator and the third resonator. The resulting microwave filter has a frequency response having a transmission zero in the lower stopband. A high-pass filter is realized without the use of a cross-coupling probe.

    摘要翻译： 微波过滤器具有限定内腔的壳体。 第一谐振器定位在内腔的第一部分中。 第二谐振器定位在内腔的第二部分中。 第三谐振器位于内腔的第三部分中。 第一谐振器和第三谐振器通过虹膜交叉耦合。 第二谐振器是细长的并且耦合到第一谐振器和第三谐振器。 所得微波滤波器具有在下阻带中具有传输零点的频率响应。 实现高通滤波器而不使用交叉耦合探头。

    Multi-mode base station and operating method and wireless communication system thereof
    50.
    发明授权
    Multi-mode base station and operating method and wireless communication system thereof 有权
    多模基站及其操作方法及其无线通信系统

    公开(公告)号：US08639292B2

    公开(公告)日：2014-01-28

    申请号：US12437377

    申请日：2009-05-07

    申请人： Ming Yu

    发明人： Ming Yu

    IPC分类号： H04M1/00

    CPC分类号： H04W88/10 ,  H04W72/04

    摘要： A multi-mode base station and an operating method and a wireless communication system thereof are provided. The multi-mode base station includes: at least two protocol processing modules, vested in at least two modes respectively, and adapted to process data and/or signaling of the mode according to the protocol corresponding to the mode; and an interface processing module, adapted to distinguish the mode of the data and/or the signaling while receiving the data and/or the signaling, and distribute the data and/or the signaling to the protocol processing module corresponding to the mode. Thus, the reconfiguration of the multi-mode base station can be performed more conveniently and quickly.

    摘要翻译： 提供了一种多模式基站及其操作方法及其无线通信系统。 多模式基站包括：分别归属于至少两种模式的至少两个协议处理模块，并且适于根据对应于该模式的协议处理模式的数据和/或信令; 以及接口处理模块，适于在接收数据和/或信令时区分数据和/或信令的模式，并将数据和/或信令分发给对应于该模式的协议处理模块。 因此，可以更方便快捷地进行多模式基站的重新配置。