Analysis on microwave absorption properties of M-type hexagonal ferrites

被引：0
|
作者：
Ota, H [1 ]
Kimura, M [1 ]
Sato, R [1 ]
Okayama, K [1 ]
Homma, M [1 ]
机构：
[1] Electromagnet Compatibil Res Labs Co Ltd, Aoba Ku, Sendai, Miyagi 9893204, Japan
来源：
ELECTROMAGNETIC COMPATIBILITY 1998 | 1998年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The microwave absorption properties of M-type hexagonal ferrites were investigated. The complex permeability and permittivity were measured using a network analyzer. In the BoFe(12-x)(TiCo) O-x(19) system, the ferrimagnetic resonance frequency shifts down to the 1 similar to 20 GHz range, when x is increased. Due to the relatively high UP value, thin matching thicknesses of 0.9 similar to 1.9mm were obtained in the 5 similar to 10 GHz range. The frequency characteristics of mu(r)' and mu(r)" were analyzed and simulated successfully using a parallel resonant circuit model based on the crystalline structure. Dual peak characteristics of mu(r)" were observed for a certain sintering temperature and duration, and a relative absorption bandwidth of 16 % was obtained. The simulation showed that a wider absorption bandwidth of 33 % may be possible.
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页码：396 / 399
页数：2
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