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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Multi-Frequency Higher-Order ADI-FDTD Solvers for Signal Integrity Predictions and Interference Modeling in General EMC Applications
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Multi-Frequency Higher-Order ADI-FDTD Solvers for Signal Integrity Predictions and Interference Modeling in General EMC Applications

机译：用于通用EMC应用中的信号完整性预测和干扰建模的多频高阶ADI-FDTD解算器

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摘要

The precise and wideband modeling of electromagnetic interferences and their effect on the signal integrity of microwave structures is presented in this paper, via an efficient 3-D dispersion-optimized method. Introducing a novel frequency-dependent alternating-direction implicit finite-difference time-domain algorithm in general curvilinear coordinates, the technique establishes a consistent multi-frequency higher-order stencil management formulation. Moreover, for arbitrary geometric discontinuities and abrupt curvatures, a field projection scheme is devised. Thus, the detrimental dispersion errors of existing approaches are drastically minimized and time-steps can now greatly exceed the stability condition at any frequency range. The proposed method leads to affordable simulations and very accurate results, as proven by a variety of electromagnetic compatibility problems.
机译：通过有效的3-D色散优化方法，本文提出了电磁干扰的精确和宽带建模及其对微波结构信号完整性的影响。在一般曲线坐标系中引入了一种新颖的频率相关交替方向隐式有限差分时域算法，建立了一致的多频高阶模板管理公式。此外，对于任意的几何不连续性和突然的曲率，设计了场投影方案。因此，现有方法的有害色散误差被极大地减小了，并且时间步长现在可以大大超过任何频率范围内的稳定性条件。各种电磁兼容性问题证明，所提出的方法可带来可承受的模拟结果和非常准确的结果。

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