자원리싸이클링 (Resources Recycling)
- 제9권6호
- /
- Pages.31-35
- /
- 2000
- /
- 2765-3439(pISSN)
- /
- 2765-3447(eISSN)
Mn-Zn ferrite 廢棄物과 시멘트를 이용한 電波吸收體
Microwave Absorber Prepared by Using the Wasted Mn-Zn Ferrite and the Cement
초록
Mn-Zn ferrite 폐기물을 시멘트와 혼합한 복합전파흡수체를 제작하여 재료정수 및 반사감쇠량을 조사하였다. 지지재로 사용한 시멘트는 실리콘 고무의 재료정수와 비교하여 높은 복소유전율(
The complex permeability, the complex permittivity and the reflection loss are investigated in the composite microwave absorbers which are mixed with the wasted Mn-Zn ferrite and the industrial cement. The cement has larger the complex permittivity than that of the rubber. The complex permittivity is decreasing with the increment of the mixing ratio of Mn-Zn ferrite to cement (F/C in weight) and the complex permeability is increasing with the increment of F/C. The maximum reflection loss is above -40 dB at all samples. The matching frequency is in the range of 1.3 GHz to 2.9 GHz and is decreasing with the increment of F/C from 1 to 3. The matching thickness is increasing with the increment of F/C. The wasted Mn-Zn ferrite and the cement is very useful material for the composite microwave absorber.
키워드