Functionalized honeycomb structures, sandwich composite structures, manufacturing methods, optimization methods and associated devices

摘要

The present invention relates to an absorbent structure (20) comprising tubular cells (12), a honeycomb structure (10) extending between two end surfaces, each cell (12) having a wall (12) defining the boundary of said cell (12). 14), wherein the wall 14 extends between two end surfaces, the wall 14 is formed of a dielectric material, and at least one cell 10 is in or on the at least one wall 14. Having at least one strip (16) of an electrically conductive coating arranged on the surface of (14), the honeycomb structure (10) has an absorbing structure that provides an attenuation of at least 10 dB for each incident wave in a frequency range having a frequency span of at least 15 GHz. It is characterized by parameters that are selected to provide .