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A Low-Frequency Accurate Cavity Model for Transient Analysis of Power-Ground Structures

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1 Author(s)
Antonini, G. ; Univ. degli Studi di L''Aquila, L''Aquila

With increased operating frequencies and circuit component density, signal and power integrity problems caused by voltage bounces have become more important for high-speed digital systems. This paper presents a systematic macromodeling of power-bus structures based on the cavity model: first, more accurate models are used to describe conductor and dielectric losses, thus improving accuracy at low frequencies; second, a rational model of the overall power/ground structure in the Laplace domain is presented, and third, the rational macromodel is used to identify the dominant poles, and a simplified SPICE-compatible equivalent circuit is synthesized by using only the selected poles. The numerical results confirm the correctness and effectiveness of the method.

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:50 ,  Issue: 1 )