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首页> 外文期刊>Components, Packaging and Manufacturing Technology, IEEE Transactions on >A Hybrid CN-FDTD-SPICE Solver for Field-Circuit Analyses in Low-Frequency Wideband Problems
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A Hybrid CN-FDTD-SPICE Solver for Field-Circuit Analyses in Low-Frequency Wideband Problems

机译：一种混合CN-FDTD-SPICE求解器，用于低频宽带问题的场电路分析

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摘要

The conventional finite-difference time-domain (FDTD) method is efficient for microwave frequencies, but requires a large number of time steps for low frequencies. In this work, a hybrid Crank-Nicolson (CN) FDTD-SPICE method is applied to field-circuit analyses in low- frequency wideband problems. The unconditionally stable CN-FDTD method is used to give a rapid full wave solution by overcoming the Courant-Friedrichs-Lewy (CFL) condition that constrains the conventional FDTD method at low frequencies. The hybrid CN-FDTD-SPICE method can be used for simulating the interactions between modern electronic circuit systems and a 3-D structure supporting field radiation and interferences. It can greatly improve the computational efficiency over the conventional FDTD method at low frequencies because its time increment can be significantly larger. Three numerical examples are presented to verify the accuracy and efficiency of this hybrid method. Its CPU time is much shorter than that of the conventional FDTD-SPICE method. This CN-FDTD-SPICE method becomes increasingly advantageous when the radiation fields are required as the system integration continues to accelerate.
机译：传统的有限差分时间域（FDTD）方法对于微波频率有效，但需要大量的低频时间步骤。在这项工作中，将杂交曲柄-Nicolson（CN）FDTD-Spice方法应用于低频宽带问题的现场电路分析。无条件稳定的CN-FDTD方法用于通过克服在低频下限制传统FDTD方法的扶手 - 弗里希氏乐（CFL）条件来提供快速全波解决方案。混合CN-FDTD-SPICE方法可用于模拟现代电子电路系统与支撑场辐射和干扰的三维结构之间的相互作用。它可以大大提高在低频下传统的FDTD方法上的计算效率，因为其时间增量可以明显更大。提出了三个数值例子以验证该混合方法的准确性和效率。其CPU时间远短于传统的FDTD-SPICE方法。当系统集成继续加速时，该CN-FDTD-SPICE方法变得越来越有利的是当需要加速辐射场。

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