Structural and Radio Frequency Co-Design and Optimization of Large Deployable Reflectarrays for Space Missions

The structural and radio frequency (RF) design optimization of a large deployable faceted reflectarray (RA) generating double polarization contour beam are presented in this work. issue addressed is the thermoelastic stability RAs impact deformation (TED) under transverse thermal gradient on RA performances. Finite element TED analysis conducted with self-standing structures, demonstrating detrimental effects in-orbit performances, estimated to be above 3 dB losses. To extent, novel solution proposed, based use reliable mechanical support capable mitigate TED. reorientation contingent RF reformulation. proposed co-design concept methodology allows conception low-profile, thermo-structurally stable compliant radiation patterns high cross-polarization discrimination worst case load. This direct nine-panel composed advanced high-order Phoenix cells directly optimized fulfill contoured requirements by respecting local periodicity layout.