Absorption Properties according to Particle Size of Ferrite in EM Wave Absorber for Mobile Phone

휴대전화용 전파흡수체에 있어서 페라이트 입자 크기의 제어에 따른 전파흡수특성

  • Published : 2003.03.01


In this study, we investigated the effect of particle size of Mn-Zn ferrite which is used as a material of electromagnetic wave absorber on electromagnetic wave properties. With increasing the particle size, the matching frequency is shifted toward lower frequency and the absorption ability of electromagnetic wave is decreased. We suggest that a sheet-type ferrite absorber composed of Mn-Zn ferrite with large particle is useful to compare with it composed of small particle size for mobile phone.


  1. 한국재료학회지 v.5 no.5 Cu-Ni-Zn 페라이트의 미세조직과 전자파흡수 특성 정재우
  2. 전기통신학술 연구과제 보고서 레이다용 고성능 전파흡수체의 개발 김동일
  3. 국방과학연구소 기술 보고서 전파흡수능 측정기법 연구 김동일
  4. J. of MMM v.212 Microwave absorptive behavior of ZnCo-substituted W-type Ba hexaferrite nanocry-stalline composite material S. Ruan;B. Xu;H. Suo;F. Wu;S. Xiang;M. Zhau