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Computer Aided Analysis of VLSI circuits based on a Partitioning Technique.

基于分区技术的 VLSI 电路计算机辅助分析。

基本信息

批准号：
02650247
负责人：
USHIDA Akio
金额：
$ 0.9万
依托单位：
Tokushima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

项目摘要

We studied 3 projects in VLSI circuit analysis as follows :1. The steady-state analysis of nonlinear electronic circuits.We proposed here two efficient algorithms for getting the steady-state responses of nonlinear circuits. They are based on both time-domain and frequency-domain approaches. At the first step, a given nonlinear circuit is partitioned into the linear subnetworks and the nonlinear subnetworks with substitution sources, and their responses are solved with different techniques of the phasor method to the linear and a time-domain method to the nonlinear subnetwork, respectively. Then, the result response of the combined circuit can be calculated by an interational technique based on the harmonic balance or relaxation method. The algorithm can be easily applied to large scale circuits, efficiently.2. Transient analysis of distributed circuits with a circuit partitioning technique.We partition a given circuit into the linear distributed circuits and the nonlinear subnetworks with substitution sources. The transient waveform is calculated in such manner that both responses of the subnetworks to the sources have the same waveform at each partitioning point, where the linear subnetworks are solved by numerical inverse Laplace transformation and the nonlinear subnetworks by a numerical integration technique. The algorithm is efficiently applied to LSI circuit containing transmission lines and distributed circuits.3. A efficient curve tracing algorithm.We presented a predictor-corrector tracing curve algorithm for analysis of nonlinear circuits. It can efficiently trace the curves even if they have sharp terning points. Hence, it is used to found DC solution of nonlinear electronic circuits containing diodes and transistors.

本文研究了VLSI电路分析中的三个课题：1.非线性电路的稳态分析本文提出了两种求非线性电路稳态响应的有效算法。它们基于时域和频域方法。第一步，将给定的非线性电路划分为线性子网络和含替代源的非线性子网络，分别用相量法和时域法求解线性子网络和非线性子网络的响应。然后，组合电路的结果响应可以通过基于谐波平衡法或松弛法的积分技术来计算。该算法易于应用于大规模电路，效率高.用电路划分技术对分布式电路进行瞬态分析，将给定电路划分为线性分布电路和带替代源的非线性子网络。瞬态波形的计算方式是这样的子网络对源的两个响应在每个分区点具有相同的波形，其中线性子网络通过数值逆拉普拉斯变换求解，非线性子网络通过数值积分技术求解。该算法有效地应用于包含传输线和分布式电路的大规模集成电路.一种有效的曲线跟踪算法本文提出了一种用于非线性电路分析的预测-校正曲线跟踪算法。即使曲线有尖锐的端点，也能有效地跟踪曲线。因此，它被用来寻求直流解的非线性电子电路包含二极管和晶体管。