Expandable fixed surface antenna

Abstract

The invention discloses an expandable fixed surface antenna which comprises a supporting base assembly, a rotary expandable assembly and multiple plate-shaped fixed surface antennas, wherein a center shaft is disposed in the supporting base assembly, multiple lug plates are disposed on the top outer edges of the supporting base assembly in the circumferential direction, and the lug plates have a one-to-one correspondence relation with the plate-shaped fixed surface antennas and are connected by biaxial joints; the rotary expandable assembly is equipped with a sleeve which is matched with the center shaft and is in a relative sliding connection with the center shaft is disposed, an installation ring firmly connected with the sleeve is disposed outside the sleeve, the installation ring is located outside the supporting base assembly, multiple hinges are disposed on the installation ring along the circumferential direction, and the hinges have a one-to-one correspondence relation with the plate-shaped fixed surface antennas and are connected by supporting connecting rods; and multiple limiting shafts are disposed on the inner wall of the installation ring, and arc limiting grooves corresponding to the limiting shafts are formed in the outer wall face of the supporting base assembly and used to control rotation angles which are formed by the plate-shaped fixed surface antennas when the antennas are expanded or retracted. The antenna has the advantages that the rotation angles which are formed by the plate-shaped fixed surface antennas when the antennas are expanded or retracted can be controlled accurately; the structure is simple; reflection face accuracy is high; and a relative size is small after retraction.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a deployable solid-surface antenna. Background technique [0002] In today's society, with the development of science and technology and the progress of social civilization, information has become one of the important resources. At the same time, the transmission method of information has also changed from simple cable transmission to a combination of cable, radio, laser and other transmission methods. In the communication system that uses radio and laser as the transmission mode, the antenna is an indispensable part as a device that radiates into space or receives electromagnetic waves from space. With the increase of the amount of information, people have more and more urgent demands on the functions of antennas such as large capacity, high power, and multi-spectral bands, which inevitably requires the premise of increasing the aperture of the antenna. As for the movable an...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an expandable solid surface antenna to solve the technical problems of complex parabolic antenna structure and low precision of the reflecting surface

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