Radar cross section measurements (8-12 GHz) of flat plates painted with microwave absorbing materials

Effect of carbon nanofibres dispersion on the microwave absorbing properties of CNF/epoxy composites

“…Adding pure dielectric or magnetic fillers to a polymer matrix is a possible way to change the material electromagnetic properties and performance [6]. Despite many successful experimental testing carried out in this direction [7][8][9], there is still a lack of knowledge in the comprehension of the mechanism of e.m. absorption in material. An extended study of current available literature bring to conclude that an exhaustive comprehension of these phenomena cannot be regardless of a correlation between material microstructure and em properties [10][11][12].…”

Ni–Zn nanoferrite for radar-absorbing material

“…They have been used as high-frequency ferrites for transformers cores, rod antennas, radio frequency coil and more recently as radar-absorbing materials (RAM) [2]. The usual process of preparing ferrite materials is the conventional solid solution method, which starts from metallic oxides.…”

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.…”