Dual band single layered meta-surface cloak

In this paper, a single layer of modulated meta-surface is proposed for cloaking the conducting object (satisfying the quasi static condition) at two frequencies. This was achieved by varying the geometry of frequency selective surface so as to make the total surface reactance of cloak equal to that of the reactance produced by the scattering property of the conducting object. The modulated meta-surface structure designed using CST microwave studio suite can cloak the conducting object from two different frequencies of 4 GHz and 5 GHz. The simulated result of the electric field distribution and the lower Radar Cross Section value verifies the cloaking effect at these dual frequencies.