Split Ring Resonator Based Metamaterial Absorber for Antenna Radar Cross Section Reduction Applications in Ku Band

This article reports on a compact metamaterial based electromagnetic absorber for Ku band radar applications. The proposed absorber offers -10 dB absorption from 14.29 GHz - 14.73 GHz having a maximum absorption peak at 14.6 GHz. The simulated and experimental results showed stable absorption response. Furthermore, it is experimentally shown that the proposed metamaterial absorber exhibits stable frequency response when illuminated by waves at oblique angles of incidence and polarization insensitive behavior up-to 60°. A good compliance between the measured and simulated results is observed.