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
    • 62. 发明授权
    • Sample clock frequency offset estimation in DRM
    • DRM中采样时钟频率偏移估计
    • US08194761B2
    • 2012-06-05
    • US12079937
    • 2008-03-28
    • Yan Liu
    • Yan Liu
    • H04L27/28
    • H04L27/2657H04L27/2675
    • A system and method for estimating sample clock frequency offset (εs) in a digital radio mondiale (DRM) system such as, for example, DRM receivers. The system and method includes using a relationship given by the following equation: ɛ s = linearfit ( angle ⁢ ( P G m P G ⁢ _ ⁢ tr m P G m ⁢ - ⁢ cycle P G ⁢ _ ⁢ tr m ⁢ - ⁢ cycle ) , l ) × N 2 ⁢ π × cycle × ( N + L ) wherein the PGm is the gain pilot received in the mth symbol and PG—trm is the gain pilot transmitted in the mth symbol, the PGm-cycle is the gain pilot received in (m-cycle)th symbol, the PG—trm-cycle is the second gain pilot transmitted in (m-cycle)th symbol, the l is the index of the sub-carrier associated with the gain pilot, the N is a factor of a sample point number of a useful symbol, the L is a sample point number of a guard interval, and the cycle is the interval of two symbols which are inserted gain pilots at the same sub-carriers (l).
    • 用于估计数字无线电台(DRM)系统(例如DRM接收机)中的采样时钟频率偏移(&egr)的系统和方法。 该系统和方法包括使用由以下等式给出的关系:εε= linearfit(角度(PG m PG _ trm PG m-周期PG _trm-周期),l) ×N 2&pgr; ×周期×(N + L)其中PGm是在第m个符号中接收的增益导数,PG-trm是在第m个符号中发送的增益导数,PGm周期是以(m-周期)th 符号,PG-trm周期是以(m周期)符号发送的第二增益导频,l是与增益导频相关联的子载波的索引,N是采样点数的因子 一个有用的符号,L是保护间隔的采样点数,周期是在相同子载波(l)处插入增益导频的两个符号的间隔。
    • 66. 发明授权
    • Heat exchanger fluid distribution manifolds and power electronics modules incorporating the same
    • 换热器流体分配歧管和并入其中的电力电子模块
    • US08077460B1
    • 2011-12-13
    • US12839039
    • 2010-07-19
    • Ercan Mehmet DedeYan Liu
    • Ercan Mehmet DedeYan Liu
    • H05K7/20
    • H01L23/473F28F3/12F28F9/026H01L2924/0002H01L2924/00
    • A heat exchanger fluid distribution manifold includes a manifold body defining a coolant fluid chamber, a single fluid inlet, and a plurality of fluid outlets. The single fluid inlet is configured to introduce a coolant fluid into the coolant fluid chamber. The plurality of fluid outlets are configured to remove the coolant fluid from the coolant fluid chamber. At least two of the plurality of fluid outlets are separated from the single fluid inlet by an unequal distance, and a coolant fluid flow rate at each fluid outlet is substantially uniform. The heat exchanger fluid distribution manifold may further include a plurality of serpentine walls along the coolant fluid chamber. Each serpentine wall comprises a spline feature located proximate to an individual fluid outlet. The spline features are optimized such that the coolant fluid flow rate is substantially uniform and a total pressure drop is less than about 2 kPa.
    • 热交换器流体分配歧管包括限定冷却剂流体室,单个流体入口和多个流体出口的歧管主体。 单个流体入口构造成将冷却剂流体引入冷却剂流体室。 多个流体出口构造成从冷却剂流体室移除冷却剂流体。 多个流体出口中的至少两个与单个流体入口分开不等距离,并且每个流体出口处的冷却剂流体流速基本上均匀。 热交换器流体分配歧管还可以包括沿着冷却剂流体室的多个蛇形壁。 每个蛇形壁包括位于单个流体出口附近的花键特征。 花键特征被优化,使得冷却剂流体流速基本均匀,总压降小于约2kPa。