Computational Algorithms for Developing Circuit Simulators

用于开发电路模拟器的计算算法

• 批准号: 12650384
• 负责人: USHIDA Akio
• 金额: $ 1.28万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650384/
• 关键词: Circuit Simulator; SPICE; asymptotic equivalent circuit transmission Line; DC Analysis; Solution Curve Trace Circuit; Newton-Homotopy method; steady-state analysis; multi-purpose circuit simulator; 汎用シニュレータの試作; 非線形回路の数値解析; 回路シミュレーション; 分布定数回路

High frequency digital circuits connected by interconnects sometimes have serious problems of fault switching by the time delays, crosstalks and reflections of the signals. Therefore, it is important to develop the user friendly simulator using SPICE. Although the moment matching method is now widely used for the reduction technique of transmission lines, it may have large error for the pole estimations far from the origin in complex plane. In this research, we have proposed a new technique for calculating the exact poles and the residues, and constructing the asymptotic equivalent circuit, which is familiar with a circuit simulator SPICE. We proposed the technique at the special section of ECCTD'01.It is also very important problem for circuit designs to find out multiple solution of DC circuits. There are many circuits such as flip-flop, Schmitt-trigger and negative resistance circuits having multiple solutions. We have developed a very simple simulator based on Newton homotopy method, and the paper will be published by IEEE Trans. Computer Aided Design, Vol.21, No.3, 2002.We also proposed an efficient algorithm for getting steady-state responses which can be applied to ICs containing parasitic elements. The paper was published Trans. IEICE, Fundamentals, Vol.E83-A, No.6, 2000.All the simulators that we have developed are very simple, efficient and user friendly because of the SPICE oriented algorithms.

通过互连连接的高频数字电路有时会因信号的时延、串扰和反射而产生严重的故障切换问题。因此，使用SPICE开发界面友好的仿真器具有重要意义。虽然矩匹配法目前被广泛应用于输电线路的简化技术，但在复杂平面中，对于远离原点的极点估计可能会有较大的误差。在这项研究中，我们提出了一种新的技术来计算精确的极点和残数，并构造渐近等效电路，这是一个熟悉的电路模拟器SPICE。这项技术是我们在ECCTD‘01的特殊章节中提出的，寻找直流电路的多解性也是电路设计中的一个非常重要的问题。有许多电路，如触发器、施密特触发器和负阻电路，具有多种解决方案。我们基于牛顿同伦方法开发了一个非常简单的模拟器，这篇论文将在IEEE Transans上发表。计算机辅助设计，第21卷，第3期，2002年第3期。我们还提出了一种适用于含有寄生元件的集成电路的稳态响应的有效算法。这篇论文是在Trans出版的。IEICE，基础，E83-A卷，第6期，2000年。由于采用了面向SPICE的算法，我们开发的所有仿真器都非常简单、高效和用户友好。

项目成果

Z.yang, Y.Nishio, A.Ushida: "A two layer CNN in image processing applications"2001 International Symposium on nonlinear Theary and its applications. Vol.2. 67-70 (2001)

Z.yang、Y.Nishio、A.Ushida：“图像处理应用中的两层 CNN”2001 年非线性理论及其应用国际研讨会。

Kyouichi Matsuo, Takeshi Matsuda, <Yoshihiro Yamagami>___________________-, <Yoshifumi Nishio>_________________- and <Akio Ushida>____________-: "Steady-State Analysis of Reactance Oscillators Having Multiple Oscillations"Proc. ITC-CSCC'00, Vol. 1, pp.203

Kyouichi Matsuo、Takeshi Matsuda、<Yoshihiro Yamagami>___________________-、<Yoshifumi Nishio>_________________- 和 <Akio Ushida>____________-：“具有多重振荡的电抗振荡器的稳态分析”Proc。

<Akio Ushida>____________-, Koji Urabe, <Yoshihiro Yamagami>__________________- and <Yoshifumi Nishio>_________________-: "Asymptotic Equivalent Circuits of Interconnects Based on Complex Frequency Method"Poc. of ECCTD'O1, Vol.3, pp.29-32, Espoo, Finland,

<Akio Ushida>____________-、Koji Urabe、<Yoshihiro Yamagami>__________________- 和 <Yoshifumi Nishio>_________________-：“基于复频率方法的互连的渐近等效电路”Poc。

A.Ushida, K.Urabe, Y.Yamagami, Y.Nishio: "Asymptotic equivalent circuits of interconnects based on complex frequency method"European Conference on Circuit Theary and Dasign. Vol.3. 29-32 (2001)

A.Ushida、K.Urabe、Y.Yamagami、Y.Nishio：“基于复频率方法的互连的渐近等效电路”欧洲电路理论与设计会议。

占部弘治: "分布定数回路の漸近的等価回路について"信学技法、NLP2000. vol.100,no.94. 15-22 (2000)

Hiroharu Urabe：“分布式常数电路的渐近等效电路”，IEICE Techniques，NLP2000，第 94 期（2000 年）。