Broadband polarization insensitive meta-material wave absorber

The invention belongs to the technical field of microwave antenna engineering, and discloses a broadband polarization insensitive meta-material wave absorber, for the purpose of solving the problems of narrow working bandwidth and sensitivity of incident electric field wave polarization directions of a conventional meta-material wave absorber. The broadband polarization insensitive meta-material wave absorber comprises a top-layer resonance structure, a middle-layer medium plate and bottom-layer copper foil, wherein the resonance structure comprises an opening resonance ring and a metal sheet disposed in the ring; when electromagnetic waves are incident to the wave absorber, the resonance structure generates a magnetic field loop, the medium plate generates dielectric loss, and electromagnetic energy is converted into heat energy through loss so that loss of the electromagnetic waves is absorbed. The wave absorber has absorption effects for incoming waves from different polarization directions so that the wav