EM modeling and design of electrically thin laminated absorbers

The paper describes an equivalent circuit approach for the analysis and the electromagnetic design of innovative thin absorbers. The use of thin bilayers of metamaterials as spacer in dielectric Salisbury screen is discussed. It is demonstrated that narrow-band thin absorbers can be obtained using both positive and negative materials, whereas broad-band thin absorbing screen can be realized only with bilayer of epsilon-negative and mu-negative materials.