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Accurate and Efficient Crosstalk Analysis by Full-wave Computations and System Identification

机译：通过全波计算和系统识别进行准确，高效的串扰分析

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摘要

We present a system-identification procedure applied to a crosstalk problem, which can be accurately analyzed by an in-house full-wave solver based on the method of moments (MoM). Given a relatively few frequency-samples of the crosstalk current, we demonstrate that it is feasible to estimate a reduced-order model of the continuous frequency dependence, where the frequency band of interest corresponds to an electrical size of the system that ranges roughly from 0.005 to 2.7 wavelengths. The estimated low-order model of the frequency response takes the form of a Padé approximant and it yields an accurate representation when compared to the reference frequency-response, as it is computed directly by the MoM solver. In addition, the low-order model can be evaluated at an extremely low computational cost and it provides useful information such as resonance frequencies and their quality factors. For the system analysis of a real-world device, the low-order model can serve as a computationally powerful and accurate representation of the electromagnetic response for a subsystem that features full-wave phenomena that otherwise could be too challenging to describe at a system level.
机译：我们提出了一种适用于串扰问题的系统识别程序，该程序可通过基于矩量法（MoM）的内部全波求解器进行准确分析。给定相对较少的串扰电流频率样本，我们证明了估算连续频率依赖性的降阶模型是可行的，其中感兴趣的频带对应于系统的电气尺寸，其范围大约为0.005到2.7个波长。估计的频率响应低阶模型采用Padé近似值的形式，并且与参考频率响应相比，它可以产生准确的表示形式，因为它是由MoM求解器直接计算的。此外，低阶模型可以以极低的计算成本进行评估，并且可以提供有用的信息，例如共振频率及其品质因数。对于实际设备的系统分析，低阶模型可以用作具有全波现象的子系统的电磁响应的计算功能强大且准确的表示形式，否则该子系统可能难以在系统级别上描述。

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