Design of a Lightweight Multilayered Composite for DC to 20 GHz Electromagnetic Shielding

Electronics

Olivier Dubrunfaut¹  Lionel Pichon¹  Chadi Gannouni¹  Paul Clérico¹  Xavier Mininger¹  Jinbo Bai²  Delong He²  Laurent Prévond³ 

[1] Laboratoire de Génie Electrique et Electronique de Paris (GeePs), CNRS, CentraleSupelec, Université Paris-Saclay, 91192 Gif-sur-Yvette, France;Laboratoire de Mécanique des Sols, Structures et Matériaux (MSSMat), CNRS, CentraleSupelec, Université Paris-Saclay, 91190 Gif-sur-Yvette, France;SATIE–CNAM, CNRS, ENS Paris-Saclay, Université Paris-Saclay, 91190 Gif-sur-Yvette, France;

关键词: electromagnetic shielding;    shielding effectiveness;    composite;    low frequency;    high frequency;    near-field;   

DOI  :  10.3390/electronics10243144

来源: DOAJ

【 摘 要 】

The work aims to design a trilayer composite dedicated to electromagnetic shielding over a large frequency range, from 1 Hz to 20 GHz. Analytical and numerical models are used to determine the shielding effectiveness (SE) of this composite in the case of a planar shield. The shield is constituted of a support layer, a magnetic layer, and a conductive layer. Two possible designs are considered. To simplify the numerical calculation, a homogenization method and the Artificial Material Single Layer (AMSL) method are used. The proposed composite shows a good shielding capacity over the whole studied frequency range, with shielding effectiveness higher than 17 dB and 75 dB, respectively, in the near-field (1 Hz–1 MHz) and far-field (1 MHz–20 GHz). Both homogenization and AMSL methods show good suitability in near-field and allow one to greatly reduce the calculation time.

【 授权许可】

Unknown