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US 2024/0195074 A1Published application
Antenna system and associated decoupling device
AssigneeThales
InventorsStéphane MALLEGOL, Nicolas CHEVAL
Life of this patent
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Abstract
An antenna system including at least one elementary antenna, a metallic plane provided around the elementary antenna, and a decoupling device arranged on the metallic plane, the decoupling device being of the three-dimensional electromagnetic absorption structure type constituted of a plurality of cells arranged in an array, each cell includes, stacked according to a direction normal to the metal plane, a base surmounted by a raised wall, the antenna system being characterized in that the raised wall is shaped so as to form a recessed pattern for trapping electromagnetic waves.
Claims14
An antenna system comprising:
- at least one elementary antenna;
- a metal plane provided around said at least one elementary antenna;
- and
- a decoupling device arranged on said metal plane, the decoupling device being of a three-dimensional electromagnetic absorption structure comprising a plurality of cells arranged in an array, each cell comprising, stacked along a direction normal to the metal plane:
- a base;
- and
- a raised wall on top of said base, wherein the raised wall is shaped to form a recessed pattern for trapping electromagnetic waves, the recessed pattern comprising a plurality of frames interlocked one inside the other, wherein at least one frame of the plurality of frames is provided with at least one lug, the at least one lug extending laterally away from the at least one frame and cooperating with an adjacent frame of the same cell or of an adjacent cell, in order to close, at least partially, a channel between the at least one frame and the adjacent frame.
4 more elements
Dependencies are inferred from the claim text.