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A model-order reduction method for the passband and stopband characteristics of periodic structures

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2 Author(s)
Bostani, A. ; Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada ; Webb, J.P.

A recent 3-D finite element method allows the complex Floquet propagation constant of a periodic structure to be computed at a specified frequency by solving a sparse, generalized eigenvalue problem. To determine the propagation constant for a frequency range requires repeating this eigenanalysis at a large number of frequency points, which is computationally expensive. A model order reduction technique is applied to reduce the dimension of the eigenproblem and to lower considerably the overall computational cost. Results for three 3-D test problems - a metallic cube and two planar structures used in power distribution networks - confirm the accuracy and efficiency of the new method.

Published in:

Microwave Conference (EuMC), 2011 41st European

Date of Conference:

10-13 Oct. 2011