Effects of temperature on the electromagnetic shielding effectiveness under a plane wave excitation
by Tahar Merizgui; Abdechafik Hadjadj; Mecheri Kious; Bachir Gaoui
International Journal of Digital Signals and Smart Systems (IJDSSS), Vol. 3, No. 1/2/3, 2019

Abstract: Sodium cadmium orthonavadates (NaCdVO₄) is a composite material that presents the advantage for being a lightweight material. The general aim behind this paper is to study the shielding behaviour of NaCdVO₄ in thermal applications and particularly the relationships between the shield parameters: electrical conductivity, magnetic permeability, dielectric constant, temperature and how these parameters affect the shielding effectiveness (SE) mechanisms of materials against the electromagnetic interference (EMI). The simulation results of the total SE show that the used composite NaCdVO₄ has the advantages for being an efficient shielding at high temperature and lightweight. This is mainly due to two keys factors. Firstly, the sample presents a lower absorption mechanism as a result of the increased reflection mechanism of the incident wave. Secondly, DC conductivity of the composite shows that the electrical conduction is a thermally activated mechanism, where the electrical conductivity increases at high temperature in the studied range 583 to 699 K compared to other materials such as copper because its conductivity decrease when the temperature increase. So, the obtained results demonstrate that the electrical conductivity is thermally activated for the NaCdVO₄.

Online publication date: Tue, 05-Nov-2019

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Digital Signals and Smart Systems (IJDSSS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com