Left Handed Metamaterial Absorber for Energy Harvesting

Abstract

With the increase in the environmental issues caused by traditional resources, renewable and clean forms of energy have attracted worldwide attention nowadays. An absorber is consisted by double E-shaped symmetric split ring resonators which are eligible of high absorption and channeling almost all the absorbed power to the resistive load is presented. The designed absorber exhibited near unity absorption and applicable of C-, X- and Ku-band applications. The dimension of each unit cell of the absorber is 10 mm × 10 mm and array slab is 160 mm × 160 mm. Finite integration technique (FIT)-based CST Microwave Studio has been used for design and analyses purpose. From result analysis, it has been shown that the simulated and measured results are well matched together. The measured result show resonance at 5.392 GHz (C-band), 10.66 GHz (X-band), 12.20 GHz (Ku-band) and the effective medium ratio is 5.56. However, the absorber has the absorption capacity of 97.5% at 5.392 GHz, absorption capacity of 99% at 10.66 GHz, and absorption capacity of 98% at 12.20 GHz.