Folding type directional antenna device for satellite

Abstract

The invention provides a folding type directional antenna device for a satellite. A supporting base can be mounted to the mounting portion of a satellite body; a pitch rotating mechanism is connectedwith the supporting base and is connected with an azimuth rotating mechanism; the azimuth rotating mechanism is connected with an antenna assembly; a restraining device is connected with the antenna assembly; the antenna assembly cannot rotate on the azimuth rotating mechanism when being restrained by the restraining device; and the antenna assembly can be folded relative to the supporting base bymeans of the pitch rotating mechanism; when the restraining device is released, the pitch rotating mechanism can rotate relatively, the azimuth rotating mechanism can rotate relatively, and the rotation axis of the pitch rotating mechanism is perpendicular to the rotation axis of the azimuth rotating mechanism; and the antenna assembly can rotate to realize orientation in different directions through the azimuth rotating mechanism and the pitch rotating mechanism. In a limited satellite installation and use space, the installation of the antenna can be realized, the antenna is far away from the satellite body after the antenna is unfolded, so that the influence of the satellite body can be decreased, and a two-dimensional rotation orientation function can be realized.

Description

technical field [0001] The invention relates to the technical field of satellite antennas, in particular to a high-gain narrow-beam two-dimensional directional antenna for satellite communications. Background technique [0002] In a certain type of satellite project, it is necessary to develop a high-gain antenna with two-dimensional rotation function for ground communication. Since the antenna installation space is very small, and due to the shielding effect of the satellite load layout on the antenna, it is required that the antenna should be as far away from the star installation surface as possible when used in orbit, so as to minimize the influence of the star environment on the antenna radiation performance, and the antenna must have two-dimensional rotation Function. [0003] At present, the known two-dimensional pointing antennas of the same type used for satellites mostly adopt the configuration scheme of deploying the locking mechanism, X-Y type two-dimensional me...

AI Technical Summary

Problems solved by technology

The disadvantages of adopting the above-mentioned classic scheme are: 1) The system layout is complex and takes up a lot of resources, requiring an independent set of deployment mechanism to realize the on-orbit deployment function; the whole system contains 3 sets of independent drive mechanisms, resulting in reduced system reliability and high cost ; 2) If only the conventional two-dimensional mechanism scheme is adopted, the working position of the antenna is too close to the satellite star, and the radiation performance of the antenna is greatly affected by the star, which cannot meet the working performance requirements

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