Automatic-resilient, reconfigurable, satellite-borne and expandable antenna

Abstract

The invention belongs to the technical field of an antenna, and discloses an automatic-resilient, reconfigurable, satellite-borne and expandable antenna. The automatic-resilient, reconfigurable, satellite-borne and expandable antenna is provided with a central cylinder, a plurality of variable parabolic radiation ribs and a thin film reflection surface, wherein the plurality of variable parabolic radiation ribs are wound around the central cylinder, and the thin film reflection surface is folded among the variable parabolic radiation ribs which are in winding states in an annular concave-convex shape. With the adoption of the variable parabolic radiation ribs manufactured from an enhanced polymer, an expansion structure is only provided with the variable parabolic radiation ribs and the carbon fiber central cylinder which can be wound, the automatic-resilient, reconfigurable, satellite-borne and expandable antenna is simple in structure, the automatic-resilient function can be achieved, a complicated folding and unfolding structure comprising the central cylinder and a gear transmission mechanism of a traditional winding rib antenna is not needed, and the service reliability of the antenna is improved; a shape memory actuator layer is attached onto a back surface of a reflection film, deformation trends under a space thermal radiation effect offset with each other, thermal deformation of a film surface under the space thermal radiation effect is effectively reduced, and the on-rail accuracy of the reflection film surface is improved; and by employing a honeycomb structure, and the weight of the antenna also can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a self-rebound reconfigurable space-borne deployable antenna. Background technique [0002] The wound rib antenna has many advantages such as high storage rate, light structure weight, high deployment reliability, and simple mechanism design. However, due to the rigidity and flexibility of the radiating ribs, it is difficult to balance the rigidity and flexibility of the radiating ribs, resulting in poor shape accuracy and on-orbit stability. Difference. In the final analysis, the reason is that the flexibility required by the thin-walled radiating ribs when it is wound is in conflict with the rigidity required after deployment, and it is difficult to balance the two. In addition, the accuracy of reflective surfaces cannot be guaranteed. [0003] To sum up, the problems existing in the prior art are: the flexibility required for winding the thin-walled radiation ribs of the e...

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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the flexibility required for the thin-walled radiation ribs of the existing wound rib antenna is in conflict with the rigidity required after unfolding, and the shape accuracy of the reflective surface is poor

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