Anechoic chamber using foamed ferrite for immunity tests in the frequency range over 1 GHz

Author

Hayashi, Toshikastu ; Inoue, Shigco ; Shimada, Kazuo ; Tokuda, Masamitsu

Author_Institution

RIKEN, Inst. of Phys. & Chem. Res., Saitama, Japan

fYear

1999

fDate

1999

Firstpage

256

Lastpage

259

Abstract

A new generation of electromagnetic absorber, which has pyramid shape and is 10 cm in height and has good absorbing characteristics in the range of high frequency range, was developed to satisfy the requirements of anechoic chambers. It was formed by a foaming process following sintering. When it was composed on a conventional ferrite tile, excellent absorbing characteristics over 20 dB were obtained in a wide range of frequency. At the same time, an anechoic chamber using foamed ferrite presented excellent uniformity of electromagnetic field strength

Keywords

absorbing media; anechoic chambers (electromagnetic); electric noise measurement; electromagnetic wave absorption; ferrites; foams; testing; 10 cm; anechoic chamber; electromagnetic absorber; ferrite tile; foamed ferrite; foaming process; high frequency absorber; immunity tests; pyramid shape; sintering; uniform electromagnetic field strength; Anechoic chambers; Electromagnetic measurements; Electromagnetic scattering; Ferrites; Frequency measurement; Magnetic field measurement; Powders; Radio frequency; Shape; Tiles;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1999 International Symposium on

Conference_Location

Tokyo

Print_ISBN

4-9980748-4-9

Type

conf

DOI

10.1109/ELMAGC.1999.801312

Filename

801312