Measurement of Electro-magnetic Parameters of Materials by Perturbation Method and Application of Network Analyzer
Zhigang Fang · Hangkong jice jishu · 2009
The network analyzer is adopted to build up a perturbation measurement system with resonance cavity in this paper.Based on the perturbation theory,the measurement equations for the complex-permittivity and permeability of small volume materials which should be loaded into the sample holders for measurement are got.The electro-magnetic parameter measurement results of the telflon show that the measurement system is stable and credible.An analysis of the error result of the measurement system,method and apparatus are carried out to confirm that the measurement system can meet the electro-magnetic parameter measurement demand of the general dielectric materials,especially the radar absorbing materials.