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    • 122. 发明授权
    • Rotary flexure micropositioning stage with large rotational range
    • 具有较大旋转范围的旋转弯曲微定位台
    • US09400378B2
    • 2016-07-26
    • US14454845
    • 2014-08-08
    • UNIVERSITY OF MACAU
    • Qingsong Xu
    • G02B21/26F16M11/18G02B21/32G02B21/34
    • G02B21/26F16M11/18G02B21/32G02B21/34
    • A stage assembly for supporting articles, the stage assembly uses one or more intermediate stage modules. Each module has a plurality of compound radial flexures (CRFs), extending radially from a base or an intermediate stage module, and allowing rotational movement about a center axis. The CRFs each have a flat profile, with a long side of the profile aligned perpendicularly to the direction of rotation of the stage modules so that the CRFs have more flexibility in the direction of rotation than obliquely to the direction of rotation. Movement of a last of the stage modules results in deflection of the CRFs between each successive stage module, with partial movement of each stage module between the base and the last of the stage modules, the last of the stage modules provided as a primary stage module.
    • 用于支撑物品的舞台组件,舞台组件使用一个或多个中间舞台模块。 每个模块具有从基座或中间级模块径向延伸并且允许围绕中心轴的旋转运动的多个复合径向挠曲件(CRF)。 CRF各自具有平坦的轮廓,其轮廓的长边垂直于载物台模块的旋转方向排列,使得CRF在旋转方向上比在旋转方向上具有更大的灵活性。 最后一个级模块的移动导致CRF在每个连续级模块之间的偏转,每个级模块在基座和最后级模块之间的部分移动,最后的级模块被提供为主级模块 。
    • 124. 发明授权
    • Non-recursive digital calibration for joint-elimination of transmitter and receiver I/Q imbalances with minimized add-on hardware
    • 非递归数字校准,用于通过最小化的附加硬件联合消除发射器和接收器I / Q失衡
    • US09276798B2
    • 2016-03-01
    • US14226032
    • 2014-03-26
    • UNIVERSITY OF MACAU
    • Wei-Han YuChak-Fong CheangKa-Fai UnPui-In MakRui P. Martins
    • H04L27/36
    • H04L27/364
    • A digital calibration circuit is used to provide joint-elimination of transmitter and receiver I/Q imbalances. Digital I and Q quadrature signals are received and converted to analog I and Q quadrature signals on I and Q for transmission on output channels. An output mixer is used to convert the quadrature signals to an unbalanced RF output. An unbalanced RF signal is received selectively either externally or from the RF output using a source follower, and the received signal is mixed to provide analog I and Q quadrature signals, using a local oscillator (LO). The LO adds an additional 90 ° phase shift between I and Q quadrature channels of the unbalanced RF input. Parameter estimating the transmitted digital I and Q quadrature signals and providing estimations of I and Q quadrature imbalance conditions.
    • 数字校准电路用于提供发射器和接收器I / Q失衡的联合消除。 数字I和Q正交信号被接收并转换成I和Q上的模拟I和Q正交信号,用于在输出通道上传输。 输出混频器用于将正交信号转换为不平衡的RF输出。 使用源极跟随器选择性地从外部或从RF输出端接收不平衡RF信号,并且使用本地振荡器(LO)将接收信号混合以提供模拟I和Q正交信号。 LO在不平衡RF输入的I和Q正交通道之间增加了一个额外的90°相移。 参数估计发送的数字I和Q正交信号,并提供I和Q正交不平衡条件的估计。