Monostatic RCS analysis of a microwave absorber using Halvorsen chaotic technique and resistive ink

Abstract

This study presents a high performance broadband microwave absorber utilizing a combination of Halvorsen chaotic trajectories and Julia fractal geometries. By integrating screen-printed resistive ink into a compact, single-layer resonator design, we achieve over 90% absorption efficiency across a continuous 15–40 GHz spectrum. The proposed structure demonstrates exceptional monostatic Radar Cross Section (RCS) reduction, reaching a peak attenuation of 25 dBsm compared to a perfect electric conductor (PEC). Optimization of chaotic control parameters and substrate thickness ensures robust performance. The polarization angle independency from 0° to 90° and incident angle independency up to 40° is maintained. Experimental results, supported by electric field and surface current analysis, validate the effectiveness for complex electromagnetic environments, offering a scalable solution for advanced stealth and aerospace applications.