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130 条记录 (耗时 0.08 秒)

    Differential space-time block coding
    1.
    发明申请
    Differential space-time block coding 审中-公开
    差分空时块编码

    公开(公告)号：US20050063483A1

    公开(公告)日：2005-03-24

    申请号：US10451274

    申请日：2000-12-20

    申请人： Rui Wang ,  Chao Wang ,  Ming Jia ,  Youri Shinakov ,  Alexandre Chloma ,  Mikhail Bakouline ,  Vitali Kreindeline

    发明人： Rui Wang ,  Chao Wang ,  Ming Jia ,  Youri Shinakov ,  Alexandre Chloma ,  Mikhail Bakouline ,  Vitali Kreindeline

    IPC分类号： H04L1/06 ,  H04L1/02

    CPC分类号： H04L1/0618

    摘要： A differential space-time block coder produces successive space-time blocks of symbols from M-PSK symbols to be encoded, in accordance with an orthogonal matrix and a normalization factor. Differentially encoded space-time output blocks, for transmission via a plurality of transmit antennas (16, 18) of a wireless communications system, are produced by multiplying (42) each space-time block from the space-time block coder (40) by the respective previous (44) differentially encoded space-time output block. Decoding is independent of channel estimation, and the arrangement is simple, avoids error propagation, and is applicable to different numbers of transmit antennas.

    摘要翻译： 差分时空块编码器根据正交矩阵和归一化因子从待编码的M-PSK符号产生符号的连续空时块。 通过将无线通信系统的多个发射天线（16,18）进行发送的差分编码空时输出块通过将来自时空块编码器（40）的每个时空块乘以（42）乘以 各个先前的（44）差分编码的空时输出块。 解码与信道估计无关，布置简单，避免了误差传播，适用于不同数量的发射天线。

    Direct metal printing with stereolithography
    5.
    发明授权
    Direct metal printing with stereolithography 有权

    公开(公告)号：US11135649B2

    公开(公告)日：2021-10-05

    申请号：US16286006

    申请日：2019-02-26

    申请人： Zhi Zhao ,  Chao Wang ,  Yu Yao

    发明人： Zhi Zhao ,  Chao Wang ,  Yu Yao

    IPC分类号： B22F3/115 ,  B22F10/10 ,  B33Y70/00 ,  B33Y10/00 ,  H05K1/09 ,  B29C64/00 ,  B22F1/00

    摘要： An additive manufacturing process for forming a metallic layer on the surface of the substrate includes fabricating a substrate from a polymerizable composition by a stereolithographic process, and contacting the reactive surface with an aqueous solution including a metal precursor. The metal precursor includes a metal, and the polymerizable composition includes a multiplicity of multifunctional components. Each multifunctional component includes a reactive moiety extending from a surface of the substrate to form a reactive surface. An interface between the reactive surface and the aqueous solution is irradiated to form nanoparticles including the metal. The nanoparticles are chemically coupled to the reactive surface by reactive moieties, thereby forming a metallic layer on the surface of the substrate.

    DIRECT METAL PRINTING WITH STEREOLITHOGRAPHY
    7.
    发明申请
    DIRECT METAL PRINTING WITH STEREOLITHOGRAPHY 审中-公开

    公开(公告)号：US20190262897A1

    公开(公告)日：2019-08-29

    申请号：US16286006

    申请日：2019-02-26

    申请人： Zhi Zhao ,  Chao Wang ,  Yu Yao

    发明人： Zhi Zhao ,  Chao Wang ,  Yu Yao

    IPC分类号： B22F3/00 ,  B33Y10/00 ,  B33Y70/00

    摘要： An additive manufacturing process for forming a metallic layer on the surface of the substrate includes fabricating a substrate from a polymerizable composition by a stereolithographic process, and contacting the reactive surface with an aqueous solution including a metal precursor. The metal precursor includes a metal, and the polymerizable composition includes a multiplicity of multifunctional components. Each multifunctional component includes a reactive moiety extending from a surface of the substrate to form a reactive surface. An interface between the reactive surface and the aqueous solution is irradiated to form nanoparticles including the metal. The nanoparticles are chemically coupled to the reactive surface by reactive moieties, thereby forming a metallic layer on the surface of the substrate.

    Antenna module
    8.
    发明授权
    Antenna module 有权

    公开(公告)号：US09859608B2

    公开(公告)日：2018-01-02

    申请号：US15008641

    申请日：2016-01-28

    申请人： Chao Wang ,  Jianchun Mai

    发明人： Chao Wang ,  Jianchun Mai

    IPC分类号： H01Q1/38 ,  H01Q1/24 ,  H01Q9/04 ,  H01Q5/371

    CPC分类号： H01Q1/243 ,  H01Q5/371 ,  H01Q9/0421

    摘要： An antenna module applicable to a mobile device is provided in the present disclosure. The antenna module includes a metal frame, a circuit board surrounded by the metal frame, and an antenna portion on the circuit board. The circuit board includes a main board and a ground board placed on the main board. The antenna portion includes at least one low frequency (LF) ground point and at least one high frequency (HF) ground point arranged on the ground board, and a feed point arranged on the main board. The at least one LF ground point and the at least one HF ground point contact the metal frame; a first current path length between the feed point and the at least one LF ground point is greater than a second current path length between the feed point and the at least one HF ground point.

    Single Photon-Counting Imaging System and Method Thereof
    10.
    发明申请
    Single Photon-Counting Imaging System and Method Thereof 有权
    单光子计数成像系统及其方法

    公开(公告)号：US20130341487A1

    公开(公告)日：2013-12-26

    申请号：US14000421

    申请日：2012-04-23

    申请人： Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

    发明人： Guangjie Zhai ,  Keming Du ,  Chao Wang ,  Wenkai Yu

    IPC分类号： G01J1/44

    CPC分类号： G01J1/44 ,  G01J1/0414 ,  G01J1/42 ,  G01J2001/442

    摘要： The invention relates to a single-photon counting imaging system and a single-photon counting imaging method. The system comprises a optical filter, a first lens, a digital micro-mirror device (DMD) control system, a second lens, a single-photon counter and a data processing unit, where the DMD together with the first lens and the second lens are used for converting two-dimensional image data into a one-dimensional sequence to complete sampling of measured signals; the ultra-weak light is filtered by the optical filter, after which the ultra-weak light image onto the DMD through the first lens, and the DMD control system controls the probability of the photons reflected to the second lens and the second lens controls the focusing of the photons; and the data processing unit together with the single-photon counter to complete sparse reconstruction, and the data processing unit converts the number of photons counted by the single-photon counter within a certain period of time into the probability of detected photon counts, as the measured value, and a photon density image is reconstructed by adopting an optimization algorithm based on the measurement matrix on the DMD and the measured value, thereby solving out the two-dimensional image.

    摘要翻译： 本发明涉及单光子计数成像系统和单光子计数成像方法。 该系统包括滤光器，第一透镜，数字微镜装置（DMD）控制系统，第二透镜，单光子计数器和数据处理单元，其中DMD与第一透镜和第二透镜 用于将二维图像数据转换为一维序列以完成测量信号的采样; 超弱光被滤光器滤光，之后通过第一透镜将超弱光图像输送到DMD上，并且DMD控制系统控制反射到第二透镜的光子的概率，而第二透镜控制第二透镜 聚焦光子; 和数据处理单元与单光子计数器一起完成稀疏重建，数据处理单元将在一定时间段内由单光子计数器计数的光子数转换为检测到的光子计数的概率，如 通过采用基于DMD测量矩阵的优化算法和测量值来重构光子密度图像，从而求出二维图像。