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Abstract

Analysing and optimising electromagnetic structures like filters, multiplexers, printed circuits and antennas etc. demand for electromagnetic CAD tools to be accurate and fast at the same time. In very rare cases a closed form (approximate) solution of the electromagnetic field distribution is at hand. In almost all other cases, numerical techniques have to be applied in order to simulate the electromagnetic behaviour of the device under test. Among a large variety of approaches to model a specific problem, the Integral Equation (IE) combined with the Method of Moments (MoM) is a possible choice. This communication tries to provide some hints how to implement an efficient algorithm based on an IE-MoM approach. Any IE-MoM procedure includes a couple of generic steps. In the following we will provide some considerations on how the numerical effort and simulation time can be reduced. The overview does not claim to be complete but rather shall provide some clues of what can be done. The overall goal of an IE-MoM procedure is to transform the original problem into a linear algebraic system of equations with a fully or densely populated matrix. The following steps can be identified in most IE-MoM implementations:

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