Optimization of absorbers in anechoic chamber

Author

Donglin, Meng ; Wang, Shafei G.

Author_Institution

Lab. of EMC, Beijing Jiaotong Univ., China

Volume

1

fYear

2005

Firstpage

594

Abstract

In this paper, the urethane pyramid is optimized numerically with regards to the reflectivity, because the pyramid absorber is widely used in anechoic chambers. The absorbers fitting for a specific chamber vary with the size and shape of the shielded enclosure. A new type of hollow ferrite pyramid is presented herein and optimized numerically. The performance of this new type of absorber is compared with that of the traditional plane ferrite tiles by the criterion of reflectivity. The results of die simulation have good agreement with some published ones. The results of simulation in this paper can be referenced in practical design.

Keywords

anechoic chambers (electromagnetic); electromagnetic shielding; ferrite devices; numerical analysis; anechoic chamber absorbers; anechoic chambers; hollow ferrite pyramid; numerical optimization; shielded enclosure; urethane pyramid absorbers; Anechoic chambers; Chebyshev approximation; Electromagnetic compatibility; Ferrites; Material properties; Reflection; Reflectivity; Shape; Testing; Tiles; absorber; ferrite; optimization; urethane pyramids;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on

Print_ISBN

0-7803-9128-4

Type

conf

DOI

10.1109/MAPE.2005.1617981

Filename

1617981