Abstract

Electromagnetic noise absorber sheets have become a solution for solving complex electromagnetic interference (EMI) problems due to their high magnetic losses. This contribution is focused on characterizing a novel structure that is based on an absorber film with a metal layer attached on its top side. Two different absorber compositions were combined with Al and Cu metal layers in order to study the improvement on the performance of these structures, depending on the complex permeability, absorber film thickness, and type of metal. The transmission attenuation power ratio of the absorber films is analyzed and compared to the performance of absorber and metal structures. The measurement procedure is carried out attaching the films into a microstrip line that has been designed based on IEC standard (IEC 62333-2). This test fixture is employed as a transmission line to simulate a general noise path. The performance of absorber composites to filter electromagnetic noise is evaluated through analyzing S21 and S11 parameters. This is carried out with the aim of finding out in which conditions the absorption loss is improved when a metal layer is attached. In addition, the possible re-radiation effect, due to the magnetic field that is generated by the eddy currents induced in the metal layer, is examined.

Details

Title
Transmission Attenuation Power Ratio Analysis of Flexible Electromagnetic Absorber Sheets Combined with a Metal Layer
Author
Jorge, Victoria 1 ; Suarez, Adrian 2   VIAFID ORCID Logo  ; Torres, Jose 2 ; Martinez, Pedro A 2 ; Alcarria, Antonio 1 ; Martos, Julio 2   VIAFID ORCID Logo  ; Garcia-Olcina, Raimundo 2   VIAFID ORCID Logo  ; Soret, Jesus 2   VIAFID ORCID Logo  ; Muetsch, Steffen 3 ; Gerfer, Alexander 3 

1  Department of Electronic Engineering, University of Valencia, 46100 Burjassot, Spain; Würth Elektronik eiSos GmbH & Co. KG, 74638 Waldenburg, Germany 
2  Department of Electronic Engineering, University of Valencia, 46100 Burjassot, Spain 
3  Würth Elektronik eiSos GmbH & Co. KG, 74638 Waldenburg, Germany 
First page
1612
Publication year
2018
Publication date
2018
Publisher
MDPI AG
e-ISSN
19961944
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.3390/ma11091612
ProQuest document ID
2607322560
Copyright
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.