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- Title
Methods for determining shielding effectiveness of materials.
- Authors
MORARI, Cristian; BĂLAN, Ionuț
- Abstract
The problem of electromagnetic interference (EMI) has deepened continuously due to the growth of the miniaturization degree and switching speed of electronic devices and to the extensive application of these electronic devices in military, industrial, and commercial areas. Consequently, the interest for an effective shielding of these interferences increased and this is achieved by using materials that, according to application, must have certain electric and/or magnetic and mechanical properties. The figure of merit for the shielding capability of a material is the electromagnetic shielding effectiveness (SE) defined as the ratio of the incident energy to the energy transmitted through the shield. This paper presents the commonly used methods for evaluating the SE of materials. These methods are based on MIL-STD-285 and ASTM D4935 standards and on the currently accepted shielding theory of an infinite plane shield placed in open space originally derived by Schelkunoff in 1943.
- Subjects
ELECTROMAGNETIC interference; ELECTROMAGNETIC shielding; ELECTRONIC equipment; FREE space optical interconnects; TRANSMISSION electron microscopy
- Publication
Electrotehnica, Electronica, Automatica, 2015, Vol 63, Issue 2, p126
- ISSN
1582-5175
- Publication type
Article