Inspired by the structural configurations of ribbed cable domes, this study introduced a novel ribpatterned deployable antenna structure, aiming to explore innovative design solutions for large-aperture antennas. Firstly, this paper designed a basic deployable module with a driving-locking joint. By sequentially assembling multiple such modules, an extendable arm was constructed, which serves as a radial support rib. Furthermore, multiple extendable arms were arranged in a circumferential array, with corresponding prestressed loop cables, resulting in the construction of a novel rib-ring deployable antenna structure. In its fully deployed state, this structure can be conceptualized as a cable-beam composite system. A simulation model of the structure was created using finite element analysis software, and modal analysis was conducted. Comparative results reveal that, relative to existing configurations, the proposed rib-ring deployable structure exhibits superior structural stiffness, indicating its potential for application in large-aperture antenna design. Building on these, the study investigated the application of the ribpatterned structure to large-aperture antennas, proposing a deployable antenna design with a diameter of 58. 2 meters. To assess the feasibility of this design, a simulation model of the antenna was developed using multi-body dynamics simulation software Adams, and deployment motion simulations were performed both for the individual extendable arm and the overall structure. The results demonstrate that the designed structure can successfully deploy into position and achieve reliable locking, further verifying the feasibility and effectiveness of the proposed antenna design. The study indicates that the novel rib-ring deployable antenna structure combines the advantages of truss-type deployable structures, which offer high stiffness, and rib-type deployable structures, which provide a high deployment ratio. This research offers valuable insights for the structural selection of future large-aperture antennas.