The complex permittivity measurement of powder materials and the dielectric constant of lunar soil

摘要

The method and system of the complex permittivity measurement for powder materials in the band from 1 GHz to 39 GHz are introduced in the paper. As the key of the measurement technology, the de-embedding technology was researched and the influence of sample holder was removed by transmission/reflection line (TRL) calibration and two transmission lines method. The experiment results verify that accuracy of the measurement system is better than 5% in the full band. Finally the dielectric characters of lunar soil simulators were researched using the system. The relative complex permittivity of lunar soil simulators were gotten from 1 to 39 GHz.