TINJAUAN KOMPARATIF KINERJA RAM: FERRITE-KARBON HIBRIDA PADA RENTANG RADAR
Kata Kunci:
Bahan Penyerap Radar (RAM), komposit ferit-karbon, Polianilin (PANI, PVDF, Barium Heksaferit (Bam), Rugi-Rugi Refleksi (RL), Bandwidth Efektif, X-Band, Ku-Band, Pencocokan Impedansi, Doping Tanah Jarang, Struktur Core-Shell, Stealth 5G, Efektivitas Perisai.Abstrak
Radar absorbing materials (RAMs) reduce radar cross section (RCS) on stealth platforms by converting electromagnetic wave energy into heat through magnetic and dielectric losses. This comparative study analyzes the performance of ferrite-based RAMs (BaFe₁₂O₁₉, BaTiO₃), Fe-based RAMs, carbon RAMs (MWCNT, GO), and polymer matrix composites (PANI, PVDF, epoxy, PPy) with hybrid fillers in the S-band, X-band, and Ku-band. Key parameters include complex dielectric/magnetic constant, minimum reflection loss (RL), effective bandwidth (RL ≤ −10 dB), layer thickness, density, and configuration (single/multilayer). Ferrite excels at low frequencies but has high density, carbon is light and thin but requires precise impedance matching, while hybrids such as PANI/BaFe₁₂O₁₉ achieve RL < −50 dB with wide bandwidth. Doping (La, Zr, Ru) and core-shell enhance the efficiency of thin (≤3 mm) GO-BaFe₁₂O₁₉ fabrics provide multifunctional shielding effectiveness of >60 dB. Results show PANI is optimal for peak absorption, PVDF for thin structures, recommending scalability research and RCS prototypes.
