Abstract

Adriano Luiz de Paula¹, Marcelo Bender Perotoni², Adriana Medeiros Gama³, Luiz Alberto de Andrade⁴

DOI : http://dx.doi.org/10.13005/ojc/300203

Recognizing the importance of an adequate characterization of radar absorbing materials (RAM), and consequently their development, the present study aims to contribute for the establishment and validation of experimental determination and numerical simulation of complex permittivity and permeability of electromagnetic materials, using for this a carbonyl iron was seventy percent of the mass concentration. The present work branches out into two related topics. The first one is concerned with the implementation of a computational modeling to predict the behavior of electromagnetic materials in confined environment by using electromagnetic three-dimensional simulation. The second topic re-examines the Nicolson-Ross-Weir mathematical model to retrieve the constitutive parameters (complex permittivity and permeability) of a homogeneous sample (carbonyl iron) from scattering coefficient measurements. The measured and calculated results show a good convergence that guarantees the application of the used methodologies for the characterization of carbonyl iron rubber in x-band frequency.

electric permittivity; magnetic permeability; iron carbonyl rubber; computational modeling

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