Experimental radar absorption in high-filling factor magnetic composites

The electromagnetic properties and microwave absorption capabilities of mono- and bilayer composite samples, comprising a polymeric matrix and a magnetic powder filler (either metallic or ceramic), are evaluated in an anechoic chamber under realistic radar conditions. The study examines the influence of the filler type and the filling factor on performance. The findings reveal exceptional broadband microwave absorption, positioning these materials as prime candidates for stealth technology applications. Experimentally, absorption levels reach up to −40 dB, while predictive modeling indicates the potential to surpass −50 dB. The experimental results align closely with model predictions for both single-layer and bilayer systems, underscoring their reliability and effectiveness.