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Journal Articles SIAM Journal on Mathematical Analysis Year : 2017

Boundary Nevanlinna-Pick interpolation with prescribed peak points. Application to impedance matching

Abstract

We study a generalized Nevanlinna Pick interpolation problem on the half-plane for rational functions of prescribed degree, where peak points are imposed and interpolation conditions may lie on the real axis. This generalizes previous work by T. Giorgiou, C. Byrnes, A Lindquist and A. Megretski. The problem is motivated by the issue of broadband matching in electronics and microwave system design. We prove existence and uniqueness of a solution by differential-topological techniques. The approach is put to work numerically on a real example, using a continuation method.
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Dates and versions

hal-01377782 , version 1 (07-10-2016)
hal-01377782 , version 2 (06-01-2017)

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Laurent Baratchart, Martine Olivi, Fabien Seyfert. Boundary Nevanlinna-Pick interpolation with prescribed peak points. Application to impedance matching. SIAM Journal on Mathematical Analysis, 2017, ⟨10.1137/16M1085577⟩. ⟨hal-01377782v2⟩

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