Shielding Effectiveness Measurement Method for Planar Nanomaterial Samples Based on CNT Materials up to 18 GHz
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Published:2023-04-25
Issue:5
Volume:9
Page:114
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ISSN:2312-7481
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Container-title:Magnetochemistry
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language:en
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Short-container-title:Magnetochemistry
Author:
Amaro Andrea1ORCID, Suarez Adrian1ORCID, Torres Jose1ORCID, Martinez Pedro A.1ORCID, Herraiz Roberto1ORCID, Alcarria Antonio2, Benedito Adolfo3ORCID, Ruiz Rocio3, Galvez Pedro3ORCID, Penades Antonio3
Affiliation:
1. Department of Electronic Engineering, University of Valencia, 46010 Burjassot, Spain 2. Würth Elektronik eiSos GmbH & Co. KG, 74638 Waldenburg, Germany 3. AIMPLAS Technological Institute of Polymers, 46980 Valencia, Spain
Abstract
The study and measurement of the shielding effectiveness (SE) of planar materials is required to predict the suitability of a certain material to form an enclosed electromagnetic shield. One of the most widely used standards for measuring the SE of planar materials is ASMT D4935-18. It is based on a coaxial sample holder (CSH) that operates up to 1.5 GHz. Due to this standard’s frequency limitations, new variants with higher frequency limits have been developed by decreasing the size of the CSH conductors and the samples. However, this method and its high-frequency variants require two types of samples with very specific geometries and sizes. This method is unsuitable for certain types of nanomaterials due to their complex mechanization at such undersized scales. This contribution proposes an alternative SE measurement method based on an absorber box that mitigates the problems presented by the ASTM D4935-18 standard. The SE of rigid nanomaterial samples based on several concentrations of multi-walled carbon nanotubes (MWCNT) and two different fiber reinforcements have been obtained.
Subject
Materials Chemistry,Chemistry (miscellaneous),Electronic, Optical and Magnetic Materials
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