Design of Split Ring Resonator for EM Waves Absorbes and Stop Band Filters in Aerial Applications

This article discusses the design of a split ring resonator (SRR) for stealth application in EW(Electronic Warfare). The SRR with conducting block added in between parallel plates is designed incorporate some capacitive effect. The proposed SRR resonates at 6.9 GHz and the bandwidth of the resonator is 2.83 GHz. It is operated in C-Band. It gives the reduced RCS with respect to reference antenna of 24 dBsm over the 5 to 10 GHz frequency range. The effect of width variation on refractive index has also been analysed.