Title :
Robust and efficient AC analysis of high-speed devices
Author :
Ke-Chih Wu ; Zhiping Yu ; So, L. ; Dutton, R.W. ; Sato-Iwanaga, J.
Author_Institution :
Center for Integrated Syst., Stanford Univ., CA, USA
Abstract :
A robust iterative algorithm for high frequency small-signal AC analysis is presented which combines a novel matrix transformation scheme and a memory-efficient iterative method-TFQMR (Transpose-Free Quasi-Minimal Residual). Excellent convergence behavior is demonstrated for frequencies up to 10/sup 15/ Hz without requiring increase in array size used in DC analysis. Device simulator (PISCES) using this new algorithm extends the frequency range of AC analysis far beyond present measurement capabilities, enabling us to investigate the device behavior at extremely high frequencies with reasonable computation time and memory requirement. The results shown here are for GaAs MESFETs but the techniques are applied to bipolar and other high-speed devices as well.<>
Keywords :
convergence of numerical methods; digital simulation; electronic engineering computing; iterative methods; matrix algebra; semiconductor device models; 1*10/sup 15/ Hz; AC analysis; GaAs MESFETs; HF small-signal AC analysis; PISCES; TFQMR method; bipolar devices; convergence behavior; device simulator; high-speed devices; matrix transformation scheme; memory-efficient iterative method; robust iterative algorithm; transpose-free quasi-minimal residual method; Convergence of numerical methods; Iterative methods; Matrices; Semiconductor device modeling; Simulation;
Conference_Titel :
Electron Devices Meeting, 1992. IEDM '92. Technical Digest., International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0817-4
DOI :
10.1109/IEDM.1992.307510
