Abstract: Based on strong fluctuation theory of granular media with uniform direction, the effective electromagnetic characteristics of structure absorbent materials were studied. The method of calculating effective permittivity and permeability of single and complex structure absorbent materials were given. The results of this paper would be helpful to the design of structure absorbent materials on the stealth technique of airplane.

Key words: structure materials, absorbent materials, dielectric constant, honeycomb structure materials