Title :
Modelling of pyramid absorbers used in EMC facilities
Author :
Lubkowski, Grzegorz ; Ihsan, Zainul ; Adami, Christian ; Suhrke, Michael
Author_Institution :
Nucl. & Electromagn. Effects, Fraunhofer INT, Euskirchen, Germany
Abstract :
In this work we show some numerical aspects related to the full-wave 3D simulations of absorber wall properties. Two problems are discussed: (i) characterization of the dielectric properties of the absorber medium and (ii) modelling of the absorber wall geometry terminating the EMC facility. It is shown that approximation of the constitutive properties of the absorber medium by Debye models with several relaxation terms can lead to a better accuracy than for a single term based Debye formula description. Regarding absorber wall geometry: multilayer models characterized by anisotropic permittivity distribution offer better approximation properties than isotropic multilayer models.
Keywords :
electromagnetic compatibility; permittivity; Debye model; EMC facility; absorber wall geometry modelling; absorber wall property; anisotropic permittivity distribution; dielectric property; full-wave 3D simulation; multilayer model; pyramid absorber modelling; relaxation term; Approximation methods; Electromagnetic compatibility; Electromagnetic waveguides; Nonhomogeneous media; Numerical models; Permittivity; Permittivity measurement; Debye model; TEM waveguide; multilayer absorber model; numerical field simulation; pyramid absorber;
Conference_Titel :
Electromagnetic Compatibility (EMC EUROPE), 2012 International Symposium on
Conference_Location :
Rome
Print_ISBN :
978-1-4673-0718-5
DOI :
10.1109/EMCEurope.2012.6396686
