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A large-aperture offset feed Cassegrain deployment antenna

A large-aperture antenna technology, applied in the aerospace field, can solve the problems of large antenna caliber and large in-orbit envelope size, and achieve the effect of ensuring relative deformation

Inactive Publication Date: 2018-12-21
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of antenna has a large aperture and a large on-orbit envelope size. It must rely on the antenna's on-orbit deployment technology to effectively achieve on-orbit deployment.

Method used

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  • A large-aperture offset feed Cassegrain deployment antenna
  • A large-aperture offset feed Cassegrain deployment antenna

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Embodiment Construction

[0017] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following The described embodiment:

[0018] Such as Figure 1-Figure 2 As shown, the embodiment of the present invention provides a large-aperture bias-fed Cassegrain spread antenna, including a main reflector assembly 1 and a secondary reflector assembly 2, the main reflector assembly 1 is a 5-meter-diameter rotating paraboloid, and is divided into The fixed surface 3, the first unfolded surface 4, and the second unfolded surface 5 are respectively installed on the corresponding fixed surface back frame 6, the first unfolded surface back frame 7, and the second unfolded surface back frame 8 through the ...

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Abstract

A large-aperture offset feed Cassegrain deployment antenna comprises a main reflective surface assembly and a sub-reflective surface assembly, wherein the main reflective surface assembly is a 5-meter-diameter rotating paraboloid, which is divided into a fixed surface, a first expanded surface and a second expanded surface, and is respectively installed on a corresponding fixed surface back frame,a first expanded surface back frame and a second expanded surface back frame through an adjusting device; A sub-reflecting surface combination comprise a first sub-reflecting part and a second sub-reflecting part, which are respectively mounted on that sub-anti-unfolding arm by an adjusting device; The first pair is a 1-meter hyperboloid and the second pair is a 1.4-meter plane. The invention canrealize the ground folding of the large-caliber offset-fed Cassegrain antenna to meet the requirements of the carrier envelope, realize deployment and position maintenance on the orbit, and finally form an antenna system to realize the requirements of remote sensing and signal transmission functions on the orbit.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to a large-aperture bias-fed Cassegrain spread antenna. Background technique [0002] In the field of modern satellite applications, mission modes such as on-orbit communication transmission, microwave remote sensing, electromagnetic reconnaissance, and optical detection play an important role. Satellites performing similar missions must be equipped with large-aperture antennas. In order to effectively solve the limitation of the antenna caliber by the envelope size of the fairing and improve the working efficiency of this type of satellite, it is urgent to develop and apply large-aperture deployment antenna technology. [0003] The offset-fed Cassegrain antenna has the characteristics of high main beam efficiency, low energy loss, and high detection sensitivity, and has always been a research hotspot for space-based antennas in orbit. This type of antenna has a large aperture and a large ...

Claims

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Application Information

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IPC IPC(8): H01Q1/28H01Q15/16H01Q19/12
CPCH01Q1/288H01Q15/161H01Q19/12
Inventor 董瑶海周徐斌王萌赵发刚李奇苏若斌
Owner SHANGHAI SATELLITE ENG INST
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