NYI: Improved Circuit Simulation Using Results from Circuit Theory

这项研究是应用主要研究者以前在非线性电路理论领域的工作，使设计人员模拟模拟电路的方式得到重大改进。 特别是，改进的连续方法解决直流工作点的电路正在保证所有的电路的工作点将被发现在一个单一的分析。 此外，连续方法被应用于电路的灵敏度分析;例如，通过观察连续曲线，设计者可以确定电路是否容易出现闩锁情况。 错误的模型被认为是电路仿真中收敛问题和错误结果的主要来源。 电路模拟的另一个增强包括通过验证所有模型满足无源性和无增益条件来检查晶体管模型的准确性。

This research is applying the principal investigator's previous work in the area of nonlinear circuit theory to make major enhancements to the way designers simulate analog circuits. In particular, improvements to the continuation methods of solving dc operating points of circuits are being made guaranteeing that all of a circuit's operating points will be found during a single analysis. Moreover, continuation methods are being applied to sensitivity analysis of circuits; for example, by making observations of a continuation curve, a designer could determine whether a circuit is prone to a latch up condition. Erroneous models are thought to be a major source of convergence problems and erroneous results in circuit simulation. Another enhancement to circuit simulation includes checking the accuracy of transistor models by verifying that all models satisfy passivity and the no- gain condition.