Periodic steady-state analysis of coupled ODE-AE-CGE systems for MOS RF autonomous circuit simulation

Authors:
Xinyu Wu;Zaiman Chen;Jinmei Lai;Qianling Zhang;Omar Wing;Junyan Ren
Affiliations:
Fudan University, Shanghai, P.R.China;Fudan University, Shanghai, P.R.China;Fudan University, Shanghai, P.R.China;Fudan University, Shanghai, P.R.China;Fudan University, Shanghai, P.R.China;Fudan University, Shanghai, P.R.China
Venue:
ASP-DAC '03 Proceedings of the 2003 Asia and South Pacific Design Automation Conference
Year:
2003

Citing 4
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Abstract

This paper studies the steady-state analysis of a system of ODE-AE-CGE arising from simulation of MOS RF autonomous circuits in which the transistor plays as current generator and its current equations could adequately represent the transistor large-signal dynamic behavior. Gauss-Seidel relaxation is applied to decouple the system so that shooting method, which is used to find the periodic steady-state response, can be performed with low-order sensitivity matrix. This simplifies the solution process and results in a fast algorithm. We illustrate the new algorithm with the simulation of a typically voltage-controlled oscillator (VCO), the simulation results show good agreement with those obtained by MEDICI, a device simulator.