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Deployable spaceborne synthetic aperture radar antenna based on shape memory polymer composites

A technology of synthetic aperture radar and memory polymer, which is applied in the structural connection of antenna grounding switch, antenna support/installation device, etc., can solve the problems of radar antennas limiting the life of artificial satellites and the number of satellites carried, so as to increase the number of carried and reduce the overall The effect of machine quality

Active Publication Date: 2020-06-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the quality of the existing radar antenna seriously limits the service life and the number of satellites carried, the present invention proposes a deployable space-borne synthetic aperture radar antenna based on shape memory polymer composite materials

Method used

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  • Deployable spaceborne synthetic aperture radar antenna based on shape memory polymer composites
  • Deployable spaceborne synthetic aperture radar antenna based on shape memory polymer composites
  • Deployable spaceborne synthetic aperture radar antenna based on shape memory polymer composites

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine Figure 1 to Figure 16 Describe this embodiment, the expandable spaceborne synthetic aperture radar antenna based on shape memory polymer composite material described in this embodiment includes a plurality of upper trusses 4, a base 5 and several antenna units, and a plurality of upper trusses 4 are installed side by side on the base in parallel 5, each upper truss 4 is provided with a plurality of antenna units along its length direction, and several antenna units are arranged in a matrix to form a rectangular board.

[0028] Both the upper truss 4 and the base 5 are made of composite materials.

specific Embodiment approach 2

[0029] Specific implementation mode two: combination Figure 1 to Figure 16 To illustrate this embodiment, each antenna unit of the expandable spaceborne synthetic aperture radar antenna based on shape memory polymer composite material in this embodiment includes an expandable cell 1, a flexible film 2, and high-frequency receiving / transmitting electronic equipment 3 and the lower slider 6 of the expandable cell, the lower end of the expandable cell 1 is slidingly connected to the upper surface of the upper truss 4 through the lower slider 6 of the expandable cell, and the flexible film 2 is attached to the upper surface of the expandable cell 1 On the end face, high-frequency receiving / transmitting electronics 3 are mounted on the upper surface of the flexible membrane 2 .

[0030] In this embodiment, the expandable cell 1, the flexible film 2, and the high-frequency receiving / transmitting electronic equipment 3 are bonded together by silicon rubber. The flexible film 2 is a...

specific Embodiment approach 3

[0032] Specific implementation mode three: combination Figure 1 to Figure 16 To illustrate this embodiment, the expandable cell 1 of the expandable spaceborne synthetic aperture radar antenna based on shape memory polymer composite material in this embodiment is composed of an inner bracket 1-1 and an outer bracket 1-2, and the inner bracket 1-1 It is a truncated cone with four inner legs 1-1-1 whose outer contour gradually tapers from top to bottom. The outer bracket 1-2 is composed of four outer legs 1-2-1. Tapered frustum from top to bottom, the outer support 1-2 is set on the inner support 1-1, the inner support leg 1-1-1 and the outer support leg 1-2-1 are both shape memory polymer composite materials maded.

[0033] The resin of the shape memory polymer composite material is epoxy, cyanate or polyimide with shape memory effect; the reinforcing phase of the composite material is carbon fiber, carbon nanotube, carbon nanotube grafted carbon fiber, chopped fiber, carbon ...

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Abstract

The invention discloses an unfoldable satellite-borne synthetic aperture radar antenna based on a shape memory polymer composite material, relates to a radar antenna and specifically relates to the unfoldable satellite-borne synthetic aperture radar antenna based on the shape memory polymer composite material. The invention aims at solving the problem that the quality of an existing radar antennaseriously limits satellite life and the carrying amount. The unfoldable satellite-borne synthetic aperture radar antenna comprises a plurality of upper trusses, a base and a plurality of antenna units, wherein the plurality of the upper trusses are abreast arranged on the base in parallel, the plurality of the antenna units are arranged on each upper truss in the length direction, and the plurality of the antenna units are arranged in a matrix shape to form a rectangular plate body. The unfoldable satellite-borne synthetic aperture radar antenna disclosed by the invention belongs to the fieldof spatial unfoldable structures.

Description

technical field [0001] The invention relates to a radar antenna, in particular to an expandable space-borne synthetic aperture radar antenna based on a shape-memory polymer composite material, and belongs to the field of space expandable structures. Background technique [0002] Shape memory polymer is a new type of intelligent material, which has the ability to maintain temporary deformation under different external environment excitations (heat, light, magnetism, etc.), and can return to the original shape when it is again stimulated by the same external environment. Thus showing the memory function of the initial shape. [0003] The phased array antenna has a beam scanning function, and the scanning angle is large, which can realize the flexible control of the antenna pointing, so the application range of the phased array antenna is very wide. The most common is the microwave remote sensing synthetic aperture radar antenna (SAR antenna) used for ground imaging. SAR ante...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/12H01Q1/50
CPCH01Q1/12H01Q1/50
Inventor 冷劲松刘彦菊辛晓洲刘立武林程兰鑫
Owner HARBIN INST OF TECH
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