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Enhancing the stability of asymptotic waveform evaluation for digital interconnect circuit applications

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4 Author(s)
D. F. Anastasakis ; Mentor Graphics Corp., Wilsonville, OR, USA ; N. Gopal ; Seok-Yoon Kim ; L. T. Pillage

Asymptotic Waveform Evaluation (AWE) has been demonstrated as an efficient approach for interconnect circuit simulation/analysis. However, since it is based upon moment-matching, it is prone to yielding unstable approximations for stable circuits. This paper describes a systematic approach for alleviating the inherent instability associated with AWE and moment-matching methods as they apply to passive, digital, interconnect circuits. The efficiency and accuracy of this approach are demonstrated on several large, RLC interconnect-circuit problems

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IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  (Volume:13 ,  Issue: 6 )