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Annular net-shaped deployable antenna and application

An antenna and mesh technology, which is applied in the ring mesh expandable antenna and its application fields, can solve the problems of reducing the reliability of antenna deployment, high antenna height in retracted state, complex antenna truss structure, etc., to achieve high rigidity and reduce the retracted state High, structurally simple effect

Active Publication Date: 2022-05-06
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) With the increase of the antenna aperture, the height of the folded antenna is too high, which limits the application of larger antenna aperture
[0006] (2) The existing technology increases the storage ratio of the foldable truss and at the same time causes the structure of the antenna truss to become complicated, reducing the reliability of the antenna's deployment
[0007]The difficulty in solving the above problems and defects is: it is difficult to find a new ring truss with a simple and reliable structure, which can meet the needs of the antenna with a super large diameter and the height limit of the folded Structural form, while ensuring high antenna rigidity and low surface density

Method used

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  • Annular net-shaped deployable antenna and application
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  • Annular net-shaped deployable antenna and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the deployable annular mesh antenna provided by the present invention includes: an annular truss 1 , a suspension rod structure 2 , a cable net system 3 , and a wire mesh 4 .

[0036] The suspension rod structure 2 is hung on the ring truss 1, and the ring truss 1 and the suspension rod structure 2 together provide the attachment point for the cable net system 3, and the cable net system 3 provides the wire mesh 4 with the parabolic shape required by the antenna. A wire mesh 4 is attached to the cable mesh system 3 as a reflective surface for the antenna.

Embodiment 2

[0038] Such as figure 2 As shown, the cable net system 3 includes an upper cable net 3-1, a vertical cable 3-2 and a lower cable net 3-3; the overall cable net form is no longer a simple "back to back" form, and the upper cable net 3-1 Set on the wire mesh 4, a vertical cable 3-2 is connected between the upper cable mesh 3-1 and the lower cable mesh 3-3, wherein the lower cable mesh 3-3 is bounded by the ring where the node of the suspension rod is located, It is divided into two areas: the inner lower cable net 3-31 and the outer lower cable net 3-32. The design nodes of the inner and outer cable nets are located on different curved surfaces, so as to achieve the purpose of reducing the height of the deployed antenna.

Embodiment 3

[0040] Such as image 3 As shown, the cable net support structure of the annular mesh expandable antenna provided by the present invention mainly includes an annular truss 1 and a suspension rod structure 2; wherein, the suspension rod structure 2 includes 6m groups of oblique stay cables 2-1, 6m A group of hoop cables 2-2 and 6m suspension rods 2-3, m≥1; each group of oblique cables 2-1 includes four cables, and one end of the four cables is connected to the lower end of the ring truss point, the other end is divided into two groups, one group includes two stay cables, which are respectively connected to the upper and lower ends of a suspension rod 2-3; each group of oblique stay cables 2-1 connects two adjacent suspension rods 2-3, and the connection point of the lower end of the ring truss 1 is located in the middle of two adjacent suspension rods 2-3; the structures of the oblique stay cables 2-1 and the suspension rods 2-3 are evenly distributed along the circumferential ...

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Abstract

The invention belongs to the technical field of satellite antennas, and discloses an annular net-shaped deployable antenna and application, and the annular net-shaped deployable antenna comprises an annular truss, an internal suspension rod structure, a cable net system and a metal wire net. The internal suspension rod structure is hung on the annular truss, and the cable net system is hung on the annular truss and the internal suspension rod to form a paraboloid shape required by the antenna; the metal wire mesh is attached to the cable net system and serves as a reflecting surface of the antenna. According to the annular net-shaped deployable antenna based on the suspension rod, the suspension rod structure is added to the cable net supporting structure on the basis of a traditional annular truss, the lower cable net form of a cable net system is changed, the unfolding state height of the deployable antenna is greatly reduced, and it is guaranteed that the annular truss is simple in structure, large in rigidity and high in reliability; and meanwhile, the mass of the antenna can be greatly reduced, and the annular truss deployable antenna can be applied to a larger aperture.

Description

technical field [0001] The invention belongs to the technical field of satellite antennas, and in particular relates to a ring mesh expandable antenna and its application. Background technique [0002] At present, with the development of satellite communications, deep space exploration and other fields, more and more stringent requirements are put forward for spaceborne antennas. According to the requirements of work tasks and the limitations of carrying conditions, space deployable antennas need to have the characteristics of high precision, large aperture, high storage ratio and low surface density. Among them, deployable antennas with ring trusses are widely used in space missions. [0003] Among the ring truss space deployable antennas, the most representative one is the Astromesh loop antenna (M. W. Thomson, "The AstroMesh deployable reflector," IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC / URSI National Rad...

Claims

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Application Information

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IPC IPC(8): H01Q7/02H01Q1/10H01Q1/12H01Q1/28
CPCH01Q7/02H01Q1/10H01Q1/1235H01Q1/288Y02D30/70
Inventor 张树新闫雷东潘海洋李昊天张顺吉段宝岩杜敬利
Owner XIDIAN UNIV