A study on the behavior of laminated electromagnetic wave absorber

Author

Kim, Kyung-Yong ; Kim, Wang-Sup ; Hong, Sung-yong

Author_Institution

Korea Adv. Inst. of Sc. & Technol., Seoul, South Korea

Volume

29

Issue

4

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

2134

Lastpage

2138

Abstract

Since ferrites are electromagnetic wave absorbing materials of composition-dependent resonance type, useful frequency ranges are typically narrow. In the present study, laminated electromagnetic wave absorbers composed of ferrite-ferrite or ferrite-dielectric layers were constructed to improve electromagnetic wave absorbing properties. When ferrites of different composition and thickness were layered, center frequency of the laminated ferrite could be changed over a range of values lying between the center frequencies of each ferrite. Compared with monolithic ferrites, ferrite-dielectric laminates exhibited broader frequency ranges with 20 dB or more attenuation

Keywords

electromagnetic wave absorption; ferrites; magnetic multilayers; magnetic thin film devices; 20 dB; attenuation; ferrite-dielectric layers; ferrite-ferrite laminates; laminated electromagnetic wave absorber; Attenuation; Dielectric losses; Electromagnetic interference; Electromagnetic scattering; Ferrites; Frequency; Impedance; Lamination; Permittivity measurement; Resonance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.221035

Filename

221035