ARBITRARY MULTIBAND OVERLAY MIXER APPARATUS ANDMETHOD FOR BANDWIDTH MULTIPLICATION
    1.
    发明申请
    ARBITRARY MULTIBAND OVERLAY MIXER APPARATUS ANDMETHOD FOR BANDWIDTH MULTIPLICATION 有权
    仲裁多重混合器装置和方法用于带宽乘法

    公开(公告)号:US20130093493A1

    公开(公告)日:2013-04-18

    申请号:US13271923

    申请日:2011-10-12

    IPC分类号: G06G7/14

    摘要: An apparatus and method for splitting a wide band input signal and overlaying multiple frequency bands on each path associated with one or more digitizers. All frequencies from the split signal on each path can be fed to a mixer. The local oscillator of each mixer receives a sum of signals, which can each be set to any arbitrary frequency, as long as an associated matrix determinant of coefficients is non-zero. Each oscillator signal is multiplied by a coefficient, which can represent phase and magnitude, prior to summing the oscillator signals together. Each mixer mixes a combined signal with the input, thereby generating a set of multiple overlaid frequency bands. The digitized signals are processed to substantially reconstruct the original input signal. Thus, the wide band input signal is digitized using multiple individual digitizers. In particular, a system can support two wide band signals using four digitizers of narrower bandwidth.

    摘要翻译: 一种用于分割宽带输入信号并在与一个或多个数字化仪相关联的每个路径上重叠多个频带的装置和方法。 来自每个路径上的分割信号的所有频率可以馈送到混频器。 每个混合器的本地振荡器接收信号总和,其可以被设置为任何任意频率,只要系数的相关联的矩阵行列式不为零。 在将振荡器信号相加在一起之前,每个振荡器信号乘以可表示相位和幅度的系数。 每个混合器将组合的信号与输入混合,从而生成一组多个重叠的频带。 处理数字化信号以基本上重建原始输入信号。 因此,使用多个单独的数字化仪将宽带输入信号数字化。 特别地,系统可以使用具有较窄带宽的四个数字化仪来支持两个宽带信号。

    RE-SAMPLING S-PARAMETERS FOR SERIAL DATA LINK ANALYSIS
    2.
    发明申请
    RE-SAMPLING S-PARAMETERS FOR SERIAL DATA LINK ANALYSIS 有权
    重新采样S参数用于串行数据链路分析

    公开(公告)号:US20130343442A1

    公开(公告)日:2013-12-26

    申请号:US13531917

    申请日:2012-06-25

    IPC分类号: H04B17/00

    CPC分类号: H04B3/46 G01R27/28

    摘要: A device and method of re-sampling a plurality of S-parameters for serial data link analysis is disclosed. The method includes storing a plurality of S-parameters sets, each S-parameter set being associated with a subsystem and having associated impulse responses and a time interval. An increased time interval is determined based on the time interval associated with each S-parameter set. The impulse responses are zero filled in each S-parameter set to maintain any wrapped ripples and increase the time interval. A plurality of resampled S-parameter sets are generated with a finer frequency resolution to cover the increased time interval.

    摘要翻译: 公开了一种用于重新采样用于串行数据链路分析的多个S参数的装置和方法。 该方法包括存储多个S参数集合,每个S-参数集合与子系统相关联并且具有相关联的脉冲响应和时间间隔。 基于与每个S参数集相关联的时间间隔来确定增加的时间间隔。 脉冲响应在每个S参数集中零填充,以保持任何包裹的波纹并增加时间间隔。 以更精细的频率分辨率生成多个重新采样的S参数集,以覆盖增加的时间间隔。

    CALIBRATION OF A PARTIALLY SYMMETRIC FIXTURE
    3.
    发明申请
    CALIBRATION OF A PARTIALLY SYMMETRIC FIXTURE 有权
    部分对称性校准

    公开(公告)号:US20080281542A1

    公开(公告)日:2008-11-13

    申请号:US12117491

    申请日:2008-05-08

    申请人: Kan TAN

    发明人: Kan TAN

    IPC分类号: G01R35/00

    CPC分类号: G01R35/005 G01R27/32

    摘要: A method useful for the characterization of a fixture splits a partially symmetric THRU structure into portions which may then be mathematically removed from both ports of a 2-port measured structure, leaving only the desired device under test (DUT).

    摘要翻译: 一种用于表征固定装置的方法将部分对称的THRU结构分成若干部分,然后可从数学上从2端口测量结构的两个端口移除,仅留下所需的待测器件(DUT)。

    METHODS AND SYSTEMS FOR ANALYZING DECOMPOSED UNCORRELATED SIGNAL IMPAIRMENTS
    4.
    发明申请
    METHODS AND SYSTEMS FOR ANALYZING DECOMPOSED UNCORRELATED SIGNAL IMPAIRMENTS 有权
    用于分析分解的非信号信号损害的方法和系统

    公开(公告)号:US20120226727A1

    公开(公告)日:2012-09-06

    申请号:US13337052

    申请日:2011-12-24

    IPC分类号: G06F17/10

    摘要: Method and systems are described for estimating signal impairments, in particular jitter that includes uncorrelated, non-periodic signal impairments. One system may take the form of an oscilloscope. The estimates may take the form of a probability density function (PDF) for uncorrelated signal impairments that has been modified to replace low probability regions with a known approximation and an extrapolation of the known approximation.

    摘要翻译: 描述了用于估计信号损伤的方法和系统,特别是包括不相关的非周期信号损伤的抖动。 一个系统可能采用示波器的形式。 估计可以采用未相关信号损伤的概率密度函数(PDF)的形式,其已经被修改以用已知近似的已知近似和外推来代替低概率区域。

    METHODS AND SYSTEMS FOR PROVIDING OPTIMUM DECISION FEEDBACK EQUALIZATION OF HIGH-SPEED SERIAL DATA LINKS
    5.
    发明申请
    METHODS AND SYSTEMS FOR PROVIDING OPTIMUM DECISION FEEDBACK EQUALIZATION OF HIGH-SPEED SERIAL DATA LINKS 有权
    提供高速串行数据链路的最佳决策反馈均衡的方法和系统

    公开(公告)号:US20120320964A1

    公开(公告)日:2012-12-20

    申请号:US13326753

    申请日:2011-12-15

    申请人: Kan TAN

    发明人: Kan TAN

    IPC分类号: H04L27/01

    CPC分类号: H04L25/03057 H04L25/03885

    摘要: Computationally efficient methods and related systems, for use in a test and measurement instrument, such as an oscilloscope, optimize the performance of DFEs used in a high-speed serial data link by identifying optimal DFE tap values for peak-to-peak based criteria. The optimized DFEs comply with the behavior of a model DFE set forth in the PCIE 3.0 specification.

    摘要翻译: 用于测试和测量仪器(如示波器)中的计算有效的方法和相关系统通过识别基于峰 - 峰的标准的最佳DFE抽头值来优化高速串行数据链路中使用的DFE的性能。 优化的DFE符合PCIE 3.0规范中规定的DFE型号的行为。