This document delves into the final stages of the design of a deployable Fresnel Zone Plate Antenna (FZPA) for nanosatellites. This work is part of the 3Cat-8 mission, currently in development at Nanosat Lab at Universitat Politécnica de Catalunya, where the thesis work was conducted. 3Cat-8 is a multi-payload mission, and the FZPA module includes a scientific experiment to perform GNSS-RO using the Fresnel membrane in Low Earth Orbit and a technology demonstration of a reliable on-orbit deployment. Given that an FZPA enhances its performance with increased dimensions, the main challenge was developing a stiff and reliable mechanism that could ensure the largest possible deployed diameter while being stored in two units of a CubeSat.