Open AccessShielding effectiveness of a metal cavity covered by a material with a medium conductivity
Author(s) -
Shuai Niu,
Chen Jiao,
Li Lin
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.214102
Subject(s) - electromagnetic shielding , materials science , transmission line , resonance (particle physics) , position (finance) , conductivity , metal , electromagnetic radiation , plane wave , electromagnetic field , electric power transmission , acoustics , computational physics , nuclear magnetic resonance , optics , atomic physics , physics , composite material , computer science , telecommunications , electrical engineering , metallurgy , finance , quantum mechanics , economics , engineering
The electromagnetic shielding effectiveness (SE) of a metal cavity covered by a material of medium conductivity is investigated theoretically by using an equivalent circuit method based on the transmission line and waveguide theory. The validity of the theoretical model is verified by comparison with the electromagnetic simulation software. The position effect and the resonance effect of the SE are calculated. A method for evaluating the SE of materials is suggested. With this method, the influence of the resonance effect and the position effect can be impaired greatly, also the SE of materials against plane wave can be evaluated directly.