Models for Variability of Transmission Line Structures

The paper is dedicated to the variability analysis of long interconnects, modeled as transmission lines. The subject deals with the numerical extraction of the parametric models for long interconnect. The novelty consists of the parameterization of the p.u.l. parameters of TL models w.r.t. the geometric parameters, subject to large or small variations. Examples of such variations are either due to design or technology (process or lithography), respectively. The accuracy of the simplest first order models is studied and validated experimentally for both affine and rational variability models.