Deployable parabolic cylindrical antenna based on tension structure

Abstract

The invention provides a deployable parabolic cylindrical antenna based on a tension structure. The deployable parabolic cylindrical antenna comprises a mesh support mechanism, a mesh retaining mechanism, a flexible cable and a wire mesh. The wire mesh is fixed on the flexible cable. The mesh support mechanism is constitutes a skeleton supporting the wire mesh. The mesh retaining mechanism is used for maintaining the basic shape of a parabolic cylinder so that the parabolic cylindrical antenna has a high surface accuracy. The flexible cable is staggered on the mesh support mechanism and forms the required the parabolic cylinder shape with the wire mesh. When the antenna is drawn in, a deployable truss shrinks in a straight line, the mesh support mechanism is folded and drawn in on two sides of the parabolic cylinder, and the flexible cable and the wire mesh are drawn in to a free space of the mesh support mechanism; when the antenna is deployed, the deployable truss is deployed in a straight line, the mesh support mechanism extends to two sides of the parabolic cylindrical antenna, and the flexible cable tightly supports the wire mesh to form the parabolic cylinder. The deployable parabolic cylindrical antenna of the invention has the advantages of large deployed diameter and small area density, and can be used for searching a target in the air and measuring the azimuth of the target.

Description

technical field [0001] The invention belongs to the technical field of satellite antennas, and relates to a deployable mesh parabolic cylindrical antenna, which can be used for searching targets and measuring target azimuth angles in the air. Background technique [0002] At present, space-borne antennas are widely used on various earth-orbiting satellites, and their tasks include ground communication, observation, reconnaissance, remote sensing, meteorology, etc. Modern satellite applications require multiple functions, large capacity, multiple frequency bands, and high power, all of which require antennas with larger apertures. By increasing the aperture of the antenna, the antenna can have higher gain and wider frequency bandwidth, improve the observation range and accuracy of the satellite, and also reduce the size of the ground receiving equipment. However, due to the limited caliber and carrying capacity of the rocket, and considering the economy of carrying, the ante...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a deployable parabolic cylindrical antenna based on a tension structure to overcome the problem that the current mesh antenna cannot achieve a larger diameter due to factors such as the height or quality of the folded antenna, and has a higher surface accuracy and smaller collapsed volume

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