Connecting vector fitting to barycentric interpolation and the Loewner matrix
Salle Lagrange Gris – 22/11/2013 @ 14h
Warning!Vector fitting (VF)  is a popular algorithm among electronic engineers for building rational models from measured or full-wave electromagnetic simulated frequency domain responses (S-, Y-, or Z- parameters). This presentation exhibits a connection between the vector fitting formulation, on one hand, and the barycentric form of a rational interpolant and the Loewner matrix, on the other hand. This connection helps address the issues of choosing the starting poles and determining the true model order.