A simple method to speed up the computation of capacitive matrixes of strip structure when changing its geometric parameter

Authors: Ahunov R. R., Kuksenko S. P., Gazizov T. R.

Annotation: The paper investigates the dependence existing between the time of a multiple solution of a capacitive matrix in a strip structure, by the method of moments, and the order (direct or reverse) in which its geometric parameter is changed. To accelerate solution of linear systems, iterative method was used during this computation. Computational results of 100 capacitive matrixes are given for three structures: a microstrip line under the changes of strip thickness and two modal filters of different configuration under the changes of a gap between their conductors. Acceleration up to 1.84 times has been obtained due to selection of the reverse order.

Keywords: microstrip line, modal filter, multiple solution, linear algebraic system, iterative method, precondi- tioning, capacitive matrix