Analytical calculation of intrinsic shielding effectiveness for isotropic and anisotropic materials based on measured electrical parameters
- 1AUDI AG, 85045 Ingolstadt, Germany
- 2SIL System Integration Laboratory GmbH, Technologiepark 32, 33100 Paderborn, Germany
- 3Lehrstuhl für Technische Elektronik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstrasse 9, 91058 Erlangen, Germany
Abstract. This contribution contains the mechanisms for calculation of magnetic shielding effectiveness from material samples, based on measured electrical parameters. For this, measurement systems for the electrical conductivity of high and low conductive material samples with respect to the direction of current flow are presented and discussed. Also a definition of isotropic and anisotropic materials with electrical circuit diagrams is given. For prediction of shielding effectiveness for isotropic and anisotropic materials, several analytical models are presented. Also adaptions to gain a near field solution are part of this contribution. All analytical models will also be validated with an adequate measurement system.