Wave-absorbing metamaterial

The embodiment of the invention provides a wave-absorbing metamaterial. The wave-absorbing metamaterial comprises a plurality of conical wave-absorbing units, the wave absorbing unit comprises a plurality of dielectric loss material layers; the interface of at least two adjacent dielectric loss material layers comprises a peripheral interface, and the included angle between the generatrix of the peripheral interface and the normal of the bottom surface of the wave absorbing unit is an acute angle; and from the bottom surface of the wave absorbing unit to the top of the wave absorbing unit, the length of a closed line formed by the intersection of the peripheral interface and the cross section parallel to the bottom surface is gradually reduced. By setting the included angle between the generatrix of the peripheral interface of the adjacent dielectric loss material layers and the normal of the bottom surface of the wave-absorbing unit as the acute angle, the characteristic of downward transmission of electroma