Microwave Absorbing Composites of SiC-CuS-PAA-PANI for Ku-Band and X-Band Applications: Design, Fabrication, and Performance Analysis

In this study, the microwave absorption properties of RL-based composites, including [SiC-CuS-PAA-PANI], were systematically investigated across the X-band (۸-۱۲ GHz) and Ku-band (۱۲-۱۸ GHz) frequency ranges. The composites were fabricated with varying coating thicknesses (۲, ۲.۵, and ۳ mm) to evaluate the effect of thickness on electromagnetic wave attenuation. The results revealed that the sample with a ۲.۵ mm thickness exhibited the best performance, achieving a minimum reflection loss of -۴۲.۳ dB at ۱۰.۵ GHz, indicating excellent microwave absorption capabilities. This enhanced performance is attributed to the synergistic interaction between the conductive polymer matrix and the SiC-CuS-PAA core-shell structure, which improves dielectric loss and impedance matching. The ability to tune absorption properties by adjusting the coating thickness offers a practical approach to designing materials tailored for specific high-frequency applications. These nanocomposites demonstrated broad absorption bandwidth and strong attenuation across the studied frequency range, making them promising candidates for electromagnetic interference (EMI) shielding in next-generation electronic devices, telecommunications, and defense applications. Future work will focus on scaling production, improving long-term stability, and further optimizing the composite structure to enhance microwave absorption efficiency.

کلیدواژه ها:

۸-۱۸ GHz ، polyaniline ، copper sulfide ، Silicon carbide ، Microwave Absorbing