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**1 - 1**of**1**### Improved Numerical Methods for the Simulation of Microwave Circuits

, 1997

"... The scattering matrix describes monolithic microwave integrated circuits that are connected to transmission lines in terms of their wave modes. Using a ønite-volume method the corresponding boundary value problem of Maxwell's equations can be solved by means of a two-step procedure. An eigenval ..."

Abstract
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The scattering matrix describes monolithic microwave integrated circuits that are connected to transmission lines in terms of their wave modes. Using a ønite-volume method the corresponding boundary value problem of Maxwell's equations can be solved by means of a two-step procedure. An eigenvalue problem for non-symmetric matrices yields the wave modes. The eigenfunctions determine the boundary values at the ports of the transmission lines for the calculation of the øelds in the three dimensional structure. The electromagnetic øelds and the scattering matrix elements are achieved by the solution of large-scale systems of linear equations with indeønite symmetric matrices. Improved numerical solutions for the time and memory consuming problems are treated in this paper. The numerical eoeort could be reduced considerably. Contents 1 Introduction 2 2 Scattering Matrix 2 3 Boundary Value Problem 4 4 Matrix Representation of the Maxwellian Equations 5 5 System of Linear Algebraic Equations...