System interference cancellation using metamaterials

A system for electromagnetic interference cancellation in an antenna (A) suitable for receiving electromagnetic signals having a receiving direction and a frequency band, said system comprising least one cover (1) comprising at least one metamaterial, called MTM, wherein said cover (1) comprises a plurality of screens (11) extending parallel to the receiving direction, and distributed radially to surround said antenna (A) in at least one plane not parallel to the receiving direction, each screen (11) comprising at least one plate, called layer (2) of MTM, with at least one track (3) of an electrically conductive material for at least one face of each layer (2), wherein said at least one cover (1) comprises at least one type of cover among the following cover types:

• a magneto-dielectric metasurface (1m) comprising one or more screens of the plurality of screens (11) including at least one track (3), with a specific shape, juxtaposed to one face of said layer (2), configured to suppress at least unwanted incident right-hand circularly polarized (RHCP) plane waves;
• a metasurface polarizer (1p) comprising one or more screens of the plurality of screens (11) including a plurality of layers (2) and a plurality of tracks (3) having a specific shape for each layer (2) and interposed between said layers (2), configured to convert the incident linear/circularly polarized wave into left-hand circular polarization (LHCP);
• or
• a phase shift metasurface (1s) comprising one or more screens of the plurality of screens (11) including at least one layer (2) with at least one track (3) on each side of the layer (2), configured to cancel the transmitted and reflected waves at the antenna point and suppress the incident wave consequently.