Evaluating RC-interconnect using moment-matching approximations
- 10 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The authors describes a relation for specifying the 'optimal' number of lumped RC sections needed to approximate a distributed RC element for an estimated digital-signal bandwidth. The bandwidth approximation also aids in determining the order of the AWE (asymptotic waveform evaluation) approximation for the driving-point and transfer function models. Since moving to arbitrarily high orders of approximation to meet the bandwidth requirements is complicated by moment-matching instability problems, a constrained mapping from moments to dominant time constants is used which guarantees stability for RC interconnect models.Keywords
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