Abstract
We present a fast time-domain multiphysics simulation framework that combines full-wave electromagnetism (EM) and carrier transport in semiconductor devices (technology computer-aided design (TCAD)) for radio frequency (RF) and mixed-signal modules. The proposed framework features a division of linear and nonlinear components in the EM-TCAD coupled system. The linear portion is extracted and handled independently with high efficiency by a matrix exponential approach assisted with Krylov subspace method. The nonlinear component is treated by ordinary Newton's method yet with a much sparser Jacobian matrix that leads to substantial speedup in solving the linear system of equations. More convenient error management and adaptive control are also available through the linear and nonlinear decoupling. Furthermore, a new form of system formulation is developed to further enhance the efficiency of the proposed framework by reducing the stiffness of EM-TCAD systems via special equation and variable transforms.
Recommended Citation
Q. Chen et al., "A Fast Time-domain EM-TCAD Coupled Simulation Framework Via Matrix Exponential With Stiffness Reduction," International Journal of Circuit Theory and Applications, vol. 44, no. 4, pp. 833 - 850, Wiley, Apr 2016.
The definitive version is available at https://doi.org/10.1002/cta.2109
Department(s)
Electrical and Computer Engineering
Publication Status
Full Access
Keywords and Phrases
E-V formulation; EM-TCAD; matrix exponential method; stiffness reduction; transient simulation
International Standard Serial Number (ISSN)
1097-007X; 0098-9886
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Wiley, All rights reserved.
Publication Date
01 Apr 2016
