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21 条记录 (耗时 0.025 秒)

    Techniques for determining parameter variability for interconnects in the presence of manufacturing uncertainty
    1.
    发明申请
    Techniques for determining parameter variability for interconnects in the presence of manufacturing uncertainty 失效

    公开(公告)号：US20060161412A1

    公开(公告)日：2006-07-20

    申请号：US11037531

    申请日：2005-01-18

    申请人： Matthew Angyal ,  Alina Deutsch ,  Ibrahim Elfadel ,  Zhichao Zhang

    发明人： Matthew Angyal ,  Alina Deutsch ,  Ibrahim Elfadel ,  Zhichao Zhang

    IPC分类号： G06F17/50

    CPC分类号： G06F17/5036

    摘要： Techniques are disclosed for determination of parameter variability for one or more given interconnects of a plurality of interconnects in a simulated semiconductor circuit. The simulated semiconductor circuit is defined at least in part by a plurality of input parameters. From a distribution of first values of a given input parameter, a plurality of the first values are determined to use when calculating a corresponding plurality of second values for each of one or more output parameters. By using at least the determined plurality of first values for the given input parameter and selected values for other input parameters in the plurality of input parameters, the corresponding plurality of second values are calculated for each of the one or more output parameters. The one or more output parameters correspond to the one or more given interconnects. Each of the second values corresponds to one of the determined plurality of first values.

    System and method for automatic selection of transmission line macromodels
    2.
    发明申请
    System and method for automatic selection of transmission line macromodels 有权
    传输线宏模型的自动选择系统和方法

    公开(公告)号：US20050222831A1

    公开(公告)日：2005-10-06

    申请号：US10816150

    申请日：2004-04-01

    申请人： Ibrahim Elfadel

    发明人： Ibrahim Elfadel

    IPC分类号： G06F17/50 ,  H04B3/46

    CPC分类号： H04B3/46 ,  G06F17/5036

    摘要： Transmission line macromodels can be classified into main categories of delay-extraction and rational approximation. The exponential solution of the Telegrapher's Equation is used to create a system and method that enable a time-domain circuit simulator to automatically select the most appropriate macromodel for a given transmission line structure.

    摘要翻译： 传输线宏模型可以分为延迟提取和有理近似的主要类别。 Telegrapher's Equation的指数解决方案用于创建一种系统和方法，使系统和方法能够使时域电路模拟器自动为给定的传输线结构选择最合适的宏模型。

    Method for order selection in passive transmission line macromodels based on the lie criteria
    9.
    发明申请
    Method for order selection in passive transmission line macromodels based on the lie criteria 有权
    基于谎言标准的无源传输线宏模型中的顺序选择方法

    公开(公告)号：US20060085171A1

    公开(公告)日：2006-04-20

    申请号：US10969743

    申请日：2004-10-19

    申请人： Ibrahim Elfadel ,  Hao Huang

    发明人： Ibrahim Elfadel ,  Hao Huang

    IPC分类号： G06F17/10

    CPC分类号： G06F17/5036

    摘要： A passive macromodel for lossy, dispersive multiconductor transmission lines uses a multiplicative approximation of the matrix exponential known as the Lie product. The circuit implementation of the macromodel is a cascade of elementary cells, each cell being the combination of a pure delay element and a lumped circuit representing the transmission line losses. Compared with passive rational macromodeling, the Lie product macromodel is capable of efficiently simulating long, low-loss multiconductor transmission lines while preserving passivity. This result is combined with transmission line theory to derive a time-domain error criterion for the Lie product macromodel. This criterion is used to determine the minimum number of cells needed in the macromodel to assure that the magnitude of the time-domain error is less than a given engineering tolerance.

    摘要翻译： 用于有损耗色散多导体传输线的被动宏模型使用被称为Lie乘积的矩阵指数的乘法逼近。 宏模型的电路实现是基本单元的级联，每个单元是表示传输线损耗的纯延迟元件和集总电路的组合。 与被动理性宏观模型相比，Lie产品宏模型能够有效地模拟长，低损耗的多导体传输线，同时保持被动性。 该结果与传输线理论相结合，以得出Lie产品宏模型的时域误差准则。 该标准用于确定宏模型中所需的最小单元数，以确保时域误差的大小小于给定的工程公差。