Design and Properties of Ferrite Absorber Used in Anechoic Chamber

전파무향실용 페라이트 흡수체의 설계 및 특성

  • 한대희 (충북대학교 공과대학 재료공학과) ;
  • 김진석 (한국전자통신연구소) ;
  • 오길남 (한국전자통신연구소) ;
  • 조성백 (국방과학연구소) ;
  • 김성수 (충북대학교 공과대학 재료공학과)
  • Published : 1994.12.01


Design and microwave absorbing properties of ferrite plate are investigated for the application to the radiowave absorbers used in anechoic chamber. The required frequency-dependence of complex permeability is determined on the basis of wave-impedance-matching relationship. The plate thickness and matchingfrequency are determined from the complex permeability and dielectric constant, and then compared with the directly measured reflection loss. A systematic variation of material constants and their influence on the microwave absorbing properties are demonstrated.