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J. Korean Ceram. Soc. > Volume 31(4); 1994 > Article
Journal of the Korean Ceramic Society 1994;31(4): 415.
유전율제어에 의한 복합 Ferrite 전파흡수체의 성능향상
신재영, 권형주, 오재희
인하대학교 무기재료공학과
Microwave Absorbing Characteristic Improvement by Permittivity Control of Ferrite Composite Microwave Absorber
The material constants(the complex permeability and permittivity) of ferrite composite determine its microwave absorbing characteristics. Therefore, in order to improve the microwave absorbing characteristics, it is necessary to control the material constants of the ferrite composite. In this study, the method of improving microwave absorbing characteristics by control of permittivity of ferrite composite which has not satisfying matching condition in C-X band (4 GHz~12.4 GHz) was investigated. It was possible to control the permittivity by adjusting graphite loading ratio in the ferrite composite microwave absorber. It was also concluded that the control of permittivity of ferrite composite is effective method to improve the microwave absorbing characteristics.
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