A one-layer ultra-thin meta-surface absorber

In this paper, the design of a one-layer ultra-thin meta-surface absorber having a simple geometry is demonstrated. The absorber is constructed of a periodic array of square patches printed on a dielectric material backed by a PEC. The square patches are coupled to each other through lossy dielectric materials representing lumped resistors. Therefore, at the resonant frequency of meta-surface the structure is equivalent to a resistive sheet where by tuning the value of dielectric loss an impedance match to the free space is successfully accomplished