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PCB West 2011 Presentation

Dielectric and conductor roughness model identification – Theory of identification with GMS-parameters – Demo and practical examples • Pre- and post-layout analysis with broadband models

Coupled striplines are used extensively as the basic building blocks for directional couplers and filters in low temperature cofired ceramic. In this paper, we present the modeling of coupled striplines in a homogeneous medium of free space between two parallel ground planes using the finite element method (FEM). FEM is especially suitable and effective for the computation of electromagnetic fields in strongly inhomogeneous media. We illustrate that FEM is as suitable and effective as other methods for modeling coupled stripline circuits.

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