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Position-dependent control of numerical integration in circuit simulation

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1 Author(s)
Strunz, K. ; Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA

In circuit simulators based on nodal analysis techniques, one numerical integration method is typically used to solve all differential equations. The properties of this method determine to a large extent the types of waveforms which can be simulated accurately. In this work, a concept for the position dependent control of numerical integration to simulate waveforms with very diverse characteristics is introduced. The numerical integration is adjusted individually in different positions of the circuit so that an accurate emulation of diverse waveforms is attained. The object-oriented implementation is discussed. It is shown that the concept is numerically very efficient and therefore suitable for time critical simulation.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:51 ,  Issue: 10 )