Research on absorbing performance of activated carbon

Abstract

The absorbing properties of activated carbon were studied and tested by making use of RCS in "the reflectivity testing measurement of radar absorbing material" of GJB 2038-94 in this work. The effect of electromagnetic parameters and thinness on absorbing properties of materials was discussed. The results indicate that in the whole 12∼18 GHz frequency band, the dielectric constant decreases with increasing frequency, the dielectric loss angle tangent with the frequency gradually increased, and the activated carbon is a kind of anti magnetic media, but it also has some paramagnetic. The sample thickness has little effect on the wave absorbing property in the 12∼18GHz frequency band;