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    • 5. 发明授权
    • Transmission line parameter determination
    • 传输线参数确定
    • US09470729B2
    • 2016-10-18
    • US14110215
    • 2011-04-08
    • Fredrik LindqvistPer Ola BörjessonAntoni Fertner
    • Fredrik LindqvistPer Ola BörjessonAntoni Fertner
    • G01R27/02H04B3/466
    • G01R27/02H04B3/466
    • The present disclosure relates to determining parameters in a model of a transmission line. For determining the parameters, reflection coefficient defining data and the total capacitance of the transmission line are obtained. Further, true reflection coefficients obtained through the reflection coefficient defining data are applied in an objective function for the line. The objective function for the line is a sum of error signals and each error signal is the difference between a model value of a reflection coefficient and a corresponding true reflection coefficient. Further, the objective function is minimized by utilizing gradients of the objective function with respect to the transmission line parameters to be determined. A capacitive length is employed and at least two further transmission line parameters are determined as combinations of a basic resistive transmission line parameter, a basic capacitive transmission line parameter and a basic inductive transmission line parameter of the transmission line model.
    • 本公开涉及确定传输线的模型中的参数。 为了确定参数,获得反射系数定义数据和传输线的总电容。 此外,通过反射系数定义数据获得的真实反射系数被应用于该行的目标函数中。 线的目标函数是误差信号的和,每个误差信号是反射系数的模型值和相应的真实反射系数之间的差。 此外,通过利用待确定的传输线参数的目标函数的梯度来最小化目标函数。 使用电容长度,并且将至少两个另外的传输线参数确定为传输线模型的基本电阻传输线参数,基本电容传输线参数和基本感应传输线参数的组合。
    • 7. 发明授权
    • Arrangement and method relating to analysis of transmission lines
    • 传输线分析的方法和方法
    • US09009017B2
    • 2015-04-14
    • US13504993
    • 2010-01-08
    • Antoni FertnerFredrik LindqvistIoanna PappaKlas EricsonMiguel BergPer Ola BörjessonStefan Höst
    • Antoni FertnerFredrik LindqvistIoanna PappaKlas EricsonMiguel BergPer Ola BörjessonStefan Höst
    • G06F17/50H04M3/26
    • H04B3/466H04M3/26
    • Embodiments of the present invention relate to an arrangement for analyzing transmission line properties. Measurement data providing means provide data of a first frequency dependent line property, line property calculation arrangement with model handling means, a Hubert transform handler and line property determination means calculate said first property based on model parameters, line resistance at 0 frequency, roc, a cut-off frequency, v, a line capacitance C∞ and a line inductance L∞H. The line model handling means calculates the line inductance L(f) via a Hubert transform of a function of Q(f/v), wherein the function Q(f/v) relates the line resistance R(f) to roc as R(f)=roc·Q(f/v). The Hilbert transform values are calculated using a parameterized closed form expression for the Hubert transform or they are tabulated. The line property determination means calculates the first property and criteria function application means uses the measured first property and the calculated first property for model parameters to find optimized numerical model parameter values.
    • 本发明的实施例涉及用于分析传输线特性的装置。 测量数据提供装置提供第一频率相关线性质的数据,具有模型处理装置的线性属性计算装置,休伯特变换处理器和线性属性确定装置基于模型参数计算所述第一属性,0频率处的线电阻,roc,a 截止频率v,线电容C∞和线电感L∞H。 线路模型处理装置通过Q(f / v)函数的休伯特变换来计算线路电感L(f),其中函数Q(f / v)将线路电阻R(f)与roc相关联, f)= roc·Q(f / v)。 希尔伯特变换值使用Hubert变换的参数化闭合表达式计算,或者将它们列表。 行属性确定装置计算第一属性和标准函数应用装置使用测量的第一属性和所计算的模型参数的第一属性来找到优化的数值模型参数值。
    • 8. 发明申请
    • Transmission Line Parameter Determination
    • 传输线参数确定
    • US20140025327A1
    • 2014-01-23
    • US14110215
    • 2011-04-08
    • Fredrik LindqvistPer Ola BörjessonAntoni Fertner
    • Fredrik LindqvistPer Ola BörjessonAntoni Fertner
    • G01R27/02
    • G01R27/02H04B3/466
    • The invention concerns a method for determining parameters in a model of a transmission line. The method comprises obtaining (36) measurements of the line comprising reflection coefficient defining data and the total line capacitance, applying (38) true reflection coefficients obtained through the reflection coefficient defining data in an objective function for the line, which function comprises a sum of error signals, each comprising the difference between a model value of a reflection coefficient and a corresponding true reflection coefficient, minimising (40) the objective function by utilizing gradients of the objective function with respect to the transmission line parameters to be determined and employing a capacitive length and determining (42) at least two further transmission line parameters as combinations of a basic resistive transmission line parameter, a basic capacitive transmission line parameter and a basic inductive transmission line parameter of the transmission line model.
    • 本发明涉及一种用于确定传输线模型中的参数的方法。 该方法包括获得包含反射系数定义数据和总线电容的线的测量(36),将通过反射系数定义数据获得的真实反射系数应用于线路的目标函数中,该函数包括 误差信号,每个误差信号包括反射系数的模型值和相应的真实反射系数之间的差异,通过利用目标函数相对于要确定的传输线参数的梯度来最小化(40)目标函数,并采用电容 长度,并且确定(42)至少两条另外的传输线参数作为传输线模型的基本电阻传输线参数,基本电容传输线参数和基本感应传输线参数的组合。
    • 9. 发明申请
    • ARRANGEMENT AND METHOD RELATING TO ANALYSIS OF TRANSMISSION LINES
    • 传输线分析方法及方法
    • US20120215503A1
    • 2012-08-23
    • US13504993
    • 2010-01-08
    • Antoni FertnerFredrik LindqvistIoanna PappaKlas EricsonMiguel BergPer Ola BörjessonStefan Höst
    • Antoni FertnerFredrik LindqvistIoanna PappaKlas EricsonMiguel BergPer Ola BörjessonStefan Höst
    • G06F17/10
    • H04B3/466H04M3/26
    • Embodiments of the present invention relate to an arrangement for analyzing transmission line properties. Measurement data providing means provide data of a first frequency dependent line property, line property calculation arrangement with model handling means, a Hubert transform handler and line property determination means calculate said first property based on model parameters, line resistance at 0 frequency, roc r cut-off frequency, v, line capacitance C∞r and line inductance Σ̂. The line model handling means calculates the line inductance L(J) via a Hubert transform of Q(f/v)r relating line resistance R(J) to roc such as formula (I). The Hilbert transform values are calculated using a parameterized closed form expression for the Hubert transform or they are tabulated. The line property determination means calculates the first property and criteria function application means uses the measured first property and the calculated first property for model parameters to find optimized numerical model parameter values.
    • 本发明的实施例涉及用于分析传输线特性的装置。 测量数据提供装置提供第一频率相关线性属性的数据,具有模型处理装置的线性属性计算装置,休伯特变换处理器和线性属性确定装置根据模型参数计算所述第一属性,0频率线路电阻, 截止频率,v,线电容C∞r和线电感&Sgr。 线路模型处理装置通过与线路电阻R(J)相关的Q(f / v)r的休伯特变换到诸如公式(I)的roc来计算线路电感L(J)。 希尔伯特变换值使用Hubert变换的参数化闭合表达式计算,或者将它们列表。 行属性确定装置计算第一属性和标准函数应用装置使用测量的第一属性和所计算的模型参数的第一属性来找到优化的数值模型参数值。
    • 10. 发明申请
    • Method for Estimating Transmission Properties of a Telecommunications Transmission Line
    • 估计电信传输线传输特性的方法
    • US20120163559A1
    • 2012-06-28
    • US13394392
    • 2009-09-11
    • Antoni FertnerPer Ola BörjessonDaniel Cederholm
    • Antoni FertnerPer Ola BörjessonDaniel Cederholm
    • H04B3/46
    • H04B3/466
    • Transmission properties of a telecommunications transmission line may be estimated with improved accuracy by numerical solution for Γ of Zin·jω̂C=Γcoth(Γ). At least one curve is adapted to Γ solutions already obtained and a starting point for numerical solution is selected in dependence of the at least one curve and in dependence of an already obtained solution close in frequency. In a first frequency range, starting points for numerical solution may be calculated from a biquadratic equation. In a second frequency range, a line in the complex plane may be adapted to solutions already obtained and new starting points selected in dependence of the line and in dependence of the previous solution. In a third frequency range, two lines in the frequency plane may be adapted to solutions already obtained and new starting points selected in dependence of the lines.
    • 电信传输线路的传输特性可以通过&Ggr的数值解决方案提高精度来估计; 的Zin·jωC=&Ggr; coth(&Ggr。)。 至少有一条曲线适应于&Ggr; 已经获得的解决方案和数值解的起点根据至少一条曲线选择,并且依赖于已经获得的频率接近的解。 在第一个频率范围内,数值解的起始点可以从二次方程计算。 在第二频率范围中,复平面中的线可以适应已经获得的解和根据线选择并且依赖于先前解的新起始点。 在第三频率范围内,频率平面中的两条线可以适应已经获得的解和根据线选择的新起点。