Microwave absorption properties of the carbonyl iron/EPDM radar absorbing materials

Employing carbonyl iron powder and Ethylene-Propylene-Diene Monomer (EPDM) as the absorbent and matrix, rubber radar absorbing materials (RAM) were prepared. Effects of the carbonyl iron volume fraction and the thickness of the RAM on the microwave absorption properties in the frequency range of 2.6–18GHz were studied, and a mathematical analysis was made using the electromagnetic theory. The experimental results indicate that the minimum...