fig6

Figure 6. RCS simulation and structural design of FeCoCu-based EWAMs. (A) CST simulation model of FeCoCu foam coated on a PEC layer; (B) RCS values of PEC and FeCoCu-coated PEC layers; (C) RCS reduction of Fe₆₅Co₃₀Cu₅-coated PEC compared with bare PEC, together with the corresponding -RL curve. Three-dimensional RCS patterns of (D) bare PEC; and (E) Fe₆₅Co₃₀Cu₅-coated PEC, respectively; (F) Angular RCS distributions of PEC and FeCoCu-coated PEC layers. (G and H) Schematic model of the multilayer frequency-selective structure based on FeCoCu alloys with different Cu contents; (I) Reflection loss curve of the multilayer frequency-selective EWAMs. RCS: Radar cross-section; PEC: EWAM: electromagnetic wave absorbing material.