DocumentCode :
1397031
Title :
Range of validity of transmission line approximations for design of electromagnetic absorbers
Author :
Chung, Yeon-choon ; Kim, Byung-Wook ; Park, Dong-Chul
Author_Institution :
EMC Group, Korea Res. Inst. of Stand. & Sci., Taejon, South Korea
Volume :
36
Issue :
4
fYear :
2000
fDate :
7/1/2000 12:00:00 AM
Firstpage :
1188
Lastpage :
1192
Abstract :
The transmission line approximation (TLA) method has been widely used for the design of electromagnetic absorbers, because it does not need the tremendous calculations required in numerical analysis methods. However, the method has intrinsic application limits as a low-frequency approximation. In this paper, we described full-wave analysis on the periodic structure with a finite element method (FEM) and investigated the accuracy and limitations of TLA by comparing TLA with FEM results for the reflection loss of a dielectric pyramid. It was found that TLA is valid when λ⩾2p, where λ is the wavelength of the frequency of interest and p is the distance between periodic cone arrays
Keywords :
electromagnetic wave absorption; finite element analysis; transmission line theory; dielectric pyramid; electromagnetic absorbers; finite element method; full-wave analysis; periodic cone arrays; periodic structure; reflection loss; transmission line approximation; Dielectric losses; Electromagnetic reflection; Finite element methods; Numerical analysis; Periodic structures; Permeability; Permittivity; Surface impedance; Transmission line theory; Transmission lines;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.877652
Filename :
877652
Link To Document :
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