A satellite-borne data transmission antenna

Abstract

The invention discloses a satellite-borne data transmission antenna, belonging to the antenna technical field. The invention comprises a reflecting surface, a feed source, a circular waveguide, a circular polarizer and a feed bracket. The reflective surface comprises a honeycomb aluminum sandwich layer and front and back carbon fiber skin. The honeycomb aluminum sandwich layer is centrally provided with a connection embedded part and the front end of the circular waveguide is provided with stacking teeth. The feed source is a housing structure having a groove and a protrusion, and the groove and the protrusion are arranged alternately; Both the circular waveguide and the circular polarizer are fixedly connected with the reflector through connecting embedded parts, and the feed bracket is connected with the feed source and the circular waveguide respectively. The antenna is provided with a titanium alloy connection embedded part at the center of the reflecting surface. The antenna reflector is connected with the base, the circular polarizer and the circular waveguide as a whole by connecting the embedded parts, thereby realizing the combination of the electrical components and the structural functional parts, reducing the assembly links, reducing the electrical losses, and solving the problem that the weight of the antenna and the rigidity and strength of the antenna are mutually restricted, which is an important improvement to the prior art.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a satellite-borne digital transmission antenna, which can be used for satellite-ground and inter-satellite data transmission. Background technique [0002] With the development of the aerospace industry, the demand for spaceborne data transmission antennas is increasing. At the same time, spaceborne antennas have relatively strict requirements on their own electrical performance, structural form, material technology, weight size, and reliability. Space-borne antennas not only need to meet the requirements of weight and size indicators, but also adapt to the shock and vibration environment during the launch phase, and adapt to the tests of ionizing radiation, vacuum, high and low temperature cycles and other environments in space. [0003] The existing spaceborne data transmission antennas often adopt different design ideas to meet the requirements of the space use environment...

AI Technical Summary

Problems solved by technology

[0004] 1. The mutual restriction between the weight of the antenna and the rigidity of its own structure;

[0005] 2. The shielding of the feed beam by the feed support;

[0006] 3. The positioning accuracy of the phase center of the feed source and the focus of the reflector

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