A Measurement of Electromagnetic Property of Illite found in Young-dong Area

영동산 일라이트의 전자기적 특성 측정

  • 김진철 (영동대학교 정보전자공학부) ;
  • 이원희 (건국대학교 전자.정보통신공학과) ;
  • 구경완 (영동대학교 정보전자공학부) ;
  • 허정 (건국대학교 전자.정보통신공학과)
  • Published : 2000.11.01


This paper describes measurement of relative permittivity of illite found in young-dong area. A measurement of relative permittivity of illite used to cylindrical cavity resonators with moveable cap. A concentric dielectric-rod inserted cylindrical cavity resonator and an exact field representation of travelling wave mode are introduced for measurement of relative permittivity. The exact electromagnetic fields in cylindrical cavity with concentric dielectric rod is analysed. A relative permittivity of dielectric in cavity is calculated by analyzing the characteristic equation. The characteristic equation is solved by using the ContourPlot graph of Mathematica. We know that the field representation of travelling mode is exact. As a result, relative permittivity of dielectric materials were 7.820 at sample-1 and 7.894 at sample-2.