A Study on the Measurement Teachnique of the Meterial Constants And Propagation Absorbing Ability of Electromagnetic Wave Absorber By One Port Method

1-PORT METHOD에 의한 전파흡수체의 재료정수 및 전파흡수능 측정기법연구

This study aims to measure the reflection loss and the material constants of the fabricated samples for electromagnectic wave absorber precisely and easily by using 20mm$\Phi$coaxial tube with the end-short-type. The authors have estabilished the extraction algorithm of material constants by one port method and proved that the results of the experiments coincided with the calculated ones. On the basis of the above results the validity of the proposed measuring method is confirmed. This measurement method could be used effectively for the design of microwave absorbe and for its evaluation.