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Numerically Stable Moment Matching for Linear Systems Parameterized by Polynomials in Multiple Variables With Applications to Finite Element Models of Microwave Structures

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2 Author(s)
Farle, O. ; Dept. of Electromagn. Theor., Saarland Univ., Saarbruecken, Germany ; Dyczij-Edlinger, R.

Parametric model-order reduction is a very powerful methodology for analyzing large-scale systems with multiple parameters. This paper extends the theory of moment-matching single-point methods to linear systems parameterized by multivariate polynomials. We propose a new algorithm that exhibits high numerical robustness and short runtimes, allows for direction-dependent model orders, and is easy to parallelize. To demonstrate the accuracy and efficiency of the suggested approach, we present the response surfaces of two microwave finite-element models, featuring the operating frequency and material properties as parameters.

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Antennas and Propagation, IEEE Transactions on  (Volume:58 ,  Issue: 11 )