A Design of Satellite-based Integrated Multi-aperture Deployable Antenna

Because existing satellite-based multi-aperture antennas cannot achieve the pointing flexibility of beams, independent beam coverage, and overall beam global coverage at the same time, this paper proposes a kind of satellite-based multi-aperture deployable antenna. The multi-aperture deployable antenna is composed of a pointing mechanism, a deployment arm, an integrated back frame, several unlocking and releasing mechanisms, some reflectors, and back-mounted reflector pointing mechanisms. The integrated back frame is connected with reflectors and the deployment arm, and the pointing mechanism is at the root of the arm. Through the integrated back frame structure, the coverage areas between multiple beams can be achieved without overlapping; by rotating the antenna pointing mechanism, the entire beam can be rotated and covered globally; rotating the pointing mechanism behind the reflector can achieve the specific beam pointing changes. Through the commercial finite element analysis software, the antenna is simulated and analyzed, and the calculation results verify the rationality of the antenna design and lay the foundation for the subsequent development of the multi-aperture deployable antenna.