Evaluation of Characteristics of Composite Electromagnetic Wave Absorbers

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It is found through simulation that composite electromagnetic wave absorbers made of Ni-Zn ferrite and SiO2 particles, which are isolated in the continuous medium of Ni-Zn ferrite, show good absorption. In particular, absorbers show absorption in the frequency regions both below and above 1 GHz for the mixing ratio of SiO2 of 80 mol%. To simulate the complex permeability of the composite materials, we considered some arrangements of SiO2 in the Ni-Zn ferrite medium. Measured values of complex permeability are close to simulated ones above 1 GHz.

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Periodical:

Edited by:

Keiichi Katayama, Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki

Pages:

193-196

DOI:

10.4028/www.scientific.net/KEM.320.193

Citation:

K. Sakai et al., "Evaluation of Characteristics of Composite Electromagnetic Wave Absorbers", Key Engineering Materials, Vol. 320, pp. 193-196, 2006

Online since:

September 2006

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$35.00

[1] H. Kusunoki, T. Kondo, K. Hiraki, K. Takada and S. Yoshikado, Key Engineering Materials, 248 (2003), p.161.

[2] T. Kondo and S. Yoshikado, Ceram. Soc. Japan, 109 (2001), p.326.

[3] K. Lichtenecker and K. Rother, Phys. A, 32 (1931), p.255. e-mail: syoshika@mail. doshisha. ac. jp, fax : +84-0774-65-6801 SiO2.

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