Experimental Study on Polarization of X-Band Wave Absorber Configured by An Array of SRR with Thin Wire

This paper presents an experimental study on the polarization of X-band wave absorber which is configured by an array of split ring resonator (SRR) with thin wire. The structure of X-band wave absorber that consists of a doubly periodic array of unit cell is constructed in three layers, that is en SRR on the first layer, 0.2 mm air spacing on the second layer, and a thin wire on the third layer. A 1.6 mm thick FR4 Epoxy dielectric substrate is used to deploy an array of SRR and thin wire at the first and third layer, respectively. The dimension of each unit cell is 3.50 mm x 3.50 mm. The polarization is experimentally investigated by performing incident wave in some orientation angles, i.e. 0°, 45", and 90°, upon the surface of X-band wave absorber. The results show that the minimum reflection coefficient occurred at the frequency of 8.2GHz are -24.15 dB, -23.29 dB, and -23.30 dB for the incident waves of 0°, 45°, and 90°, respectively.