会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明申请
    • METHODS AND APPARATUS FOR DIRECT SYNTHESIS OF RF SIGNALS USING DELTA-SIGMA MODULATOR
    • 使用DELTA-SIGMA调制器直接合成RF信号的方法和装置
    • WO2010114521A1
    • 2010-10-07
    • PCT/US2009/038929
    • 2009-03-31
    • AGERE SYSTEMS INC.ADAZET, KameranHIJAZI, SamerOTHMER, J.H.
    • ADAZET, KameranHIJAZI, SamerOTHMER, J.H.
    • H03M7/32
    • H03M7/3042H03M7/3024
    • Methods and apparatus are provided for direct synthesis of RF signals using a delta-sigma modulator. An RF signal is synthesized from an input signal by quantizing the input signal using a quantizer, such as a one bit quantizer; determining a quantization error associated with the quantizer; generating an error prediction value using an error predictive filter, wherein the error predictive filter comprises one or more filter zeroes on a unit circle for one or more desired frequencies of f 1 , f 2 ,... f n and one or more filter poles having a magnitude inside the unit circle and a frequency substantially equal to the one or more desired frequencies of f 1 , f 2 ,... f n ; and subtracting the error prediction value from the input signal. The filter poles have a magnitude that reduces a boost provided out-of-band.
    • 提供了使用Δ-Σ调制器直接合成RF信号的方法和装置。 通过使用诸如一位量化器的量化器量化输入信号,从输入信号合成RF信号; 确定与所述量化器相关联的量化误差; 使用误差预测滤波器生成误差预测值,其中所述误差预测滤波器包括在f1,f2,... fn的一个或多个期望频率的单位圆上的一个或多个滤波器零点,以及具有幅度的一个或多个滤波器极 在单位圆内,频率基本上等于f1,f2,... fn的一个或多个期望频率; 并从输入信号中减去误差预测值。 滤波器极具有降低带外提升的幅度。
    • 8. 发明申请
    • SPLIT RAIL TROLLEY SYSTEM
    • 分体式拉杆系统
    • WO2009049040A1
    • 2009-04-16
    • PCT/US2008/079334
    • 2008-10-09
    • MACTON CORPORATIONESPOSTI, AlbertKOSTRZEWSKI, StanislawHANNON, ThomasYOUNG, Thomas, E.
    • ESPOSTI, AlbertKOSTRZEWSKI, StanislawHANNON, ThomasYOUNG, Thomas, E.
    • B60S9/22
    • B61K5/04B66F3/08B66F7/14Y10T29/53452
    • An apparatus for removing a wheelset from a railroad vehicle includes a frame configured for motion with respect to the railroad vehicle. The apparatus also includes a lifting yoke cooperatively associated with the frame. The yoke is configured to engage flanges of the wheelset. The apparatus further includes at least one lifting screw interposed between the frame and the lifting yoke, such that upon rotation of the at least one lifting screw, the yoke may be raised and lowered to selectively engage the flanges of the wheelset. A "universal" lifting yoke can include a first portion which engages the at least one lifting screw, a set of extendable transverse members having outward ends, and flange-engaging blocks secured to the outward ends of the extendable transverse members and configured to engage the flanges of the wheelset.
    • 用于从铁路车辆移除轮对的装置包括被配置为相对于铁路车辆运动的框架。 该装置还包括与框架协作地关联的提升架。 轭被构造成接合轮对的凸缘。 所述装置还包括插入在所述框架和所述提升轭架之间的至少一个提升螺钉,使得当所述至少一个提升螺杆旋转时,所述轭可被升高和降低以选择性地接合所述轮对的凸缘。 “通用”提升轭可以包括接合至少一个提升螺钉的第一部分,一组具有外端的可延伸的横向构件,以及法兰接合块,其固定到可延伸的横向构件的外端, 轮对的法兰