Uncertainty Analysis and Compensation of the Cell for Permittivity Measurement of Solid Materials

고체재료의 유전율 측정용 Cell의 불확도 분석과 보상

  • 김한준 (한국표준과학연구원 기반표준부 전자기그룹) ;
  • 유광민 (한국표준과학연구원 기반표준부 전자기그룹) ;
  • 강전홍 (한국표준과학연구원 기반표준부 전자기그룹) ;
  • 한상옥 (충남대학교 전기공학과)
  • Published : 2008.01.01


The commercial parallel plate electrodes system with guard-ring electrode have been widely used for measurement of dielectric constants of solid materials. And the specification of the electrodes system is about 1 % of measurement uncertainty. This measurement uncertainty is only estimated the error come from mechanical measurements such as the area of the electrodes and the gap between the electrodes except the error come from the air gap between the electrodes and dielectric specimen. Because it is impossible to measure the air gap. This study analyze the total measurement uncertainties of the commercial dielectric constant test cell using 3 kinds of Standard Reference Materials. As a results, the total measurement uncertainty is much bigger than 1 % and the most of the uncertainty can be reduced by compensation of the error values evaluated in this study.


Dielectric constants;Parallel plate electrodes capacitor;SRM;Dielectric specimen;Uncertainty;Compensation


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