An efficient finite elements electromagnetic analysis for geometries with small variations

In this work an innovative method for fast analysis of geometrical variations of electromagnetic field problems is proposed. The method is based on a geometrical perturbative approach for the solution of a linear differential operator in presence of small domain modifications. The perturbative theory is general, but in this contribution has been embedded in a classical finite element (FE) framework to achieve a very fast technique for the field evaluation in synthesis or tolerance investigation of electromagnetic problems.