Synthesis and Analysis of Bioceramic Material for Mitigation of Electromagnetic Interference in Radar Communication

Reduction of radar cross section is an important aspect in radar technology. The radar absorbent material (RAM) plays significant role in reduction of radar signature by mitigation of radio wave interference used in ships, helicopters, tanks and transport planes. Bio ceramic material composed of china clay and carbon rich waste rice husk ash possesses good dielectric loss for frequency 10 GHz and reflection loss -20 dB which is quite significant for stealth technology. Scanning electron microscopy (SEM) study shows good dispersion of rice husk ash in the epoxy matrix. Frequency dependence of both dielectric constant and dielectric loss are measured in the X band frequency range (8.2GHz-12.4GHz). This low cost laboratory scale synthesized RAM find its application in designing of stealth aircraft and jet fighter for military purposes.