Abstract
We present an electromagnetic bandgap (EBG) multilayer structure, acting as a frequency-selective surface able to absorb in specified narrow frequency bands within the GHz-range. The structure is a lossy EBG using ultra-thin conductive layers to generate a controlled resonance in homogenous high permittivity slabs. The basic structure is composed of carbon nanotubes depositions sandwiched between polycarbonate films, which are stacked in alternation between dielectric slabs. The physical properties (i.e., relative permittivity and thickness) of the dielectric spacers allow creating narrow high-absorption bands at defined frequencies. This multilayer approach offers a smart and versatile solution for tuning the selectivity of EBG performance.
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