Radar cross section reduction of dihedral and trihedral comer reflectors coated with radar absorbing materials (8-12 GHz)

Lightweight structural composites with electromagnetic applications

“…This method is used to evaluate the transparency of materials, such as polymeric composite laminates. Again, this result was obtained by the authors and published before [14,15,22]. In all cases, the laminates measured 30 × 30 cm 2 (width × length) with a thickness of 2 and 4 mm were used.…”

“…The use of radar is based on the transmission and reception of pulses in a narrow beam [13][14][15][16][17][18][19][20][21]. In other words, the RCS measures the target's ability to reflect radar signals into a radar receiver.…”

“…Reflectivity curves of carbon fiber/epoxy, aramid fiber/epoxy, and glass fiber/epoxy laminates in the frequency range of 8-12 GHz, using the method of insertion between antennas [14,15,22]. It is observed that thicker laminates (measuring 4 mm) increase the loss, i.e., the material is less transparent and more reflective.…”

“…The carbon fiber/epoxy laminate presents 99.99% of attenuation for the incident radiation. 12.3 Microwave-Absorbing Properties Reflectivity curves of the aluminum, glass fiber/epoxy, carbon fiber/epoxy, and aramid fiber/epoxy laminates (30 × 30 cm 2 ) at 9.375 GHz, using the RCS method in an anechoic chamber [14,15,22]. In this case, the signal not measured by the receiver antenna may have been reflected or absorbed by the material.…”