Fig. 3: Ultralight transmitarray and scalability.
From: Ultra-light antennas via charge programmed deposition additive manufacturing
A, B Schematic comparison of A conventional lithographic transmitarray unit cell with B ultralight transmitarray unit cell printed with CPD. C Weight comparison between the ultralight transmitarray and a traditional PCB process manufactured transmitarray of a similar design at the same frequency (estimated based on the design in ref. 36). D, E Photos showing the complex metal-dielectric structure of copper and acrylate polymer. F The transmission coefficient (|TLR|: left-hand; |TRR|: right-hand) of the unit cell under right-hand circularly polarized incidence with different incident angles (θinc). G Transmitarray simulation (Simu.) and measured (Meas.) results at 19 GHz for the co-polarized (Co-pol) left-hand circularly polarized (LHCP, solid lines) and cross-polarized (X-pol) right-hand circularly polarized (RHCP, dashed lines) components. H Horizontally tiling scheme. I, J The assembly of the 12-cm and 20-cm diameter transmitarray antenna. K LHCP (Co-Polarized) and RHCP (Cross-Polarized) experimental data in 0°-cut of AIOP and tiled 12-cm transmitarray at 19 GHz.
