DOI: 10.1109/TMTT.2025.3577467   IEEEXplore: https://ieeexplore.ieee.org/document/11038823

Single-print, multi-material, doubly-curved, fully-additively-manufactured, tri-band, multilayer frequency selective surface (FSS).

2-6 GHz passband (including L-band), 17.7 – 20.2 GHz and 27.5 – 30 GHz stopbands (in the Ku and Ka bands)

The first fully additively manufactured, multi-layer, and doubly-curved FSS. Two fully encapsulated conductive silver nanoparticle ink layers deposited with direct ink write (DIW) and 3 dielectric layers deposited using fused filament fabrication (FFF). Non-planar slicing and printing techniques are applied to enable conformal FSS printing with a traditional 3-axis 3D-printer. These additive manufacturing techniques enable the production, within a single print session, of multi-layer and conformal FSS.

Sub-reflector for Ku/Ka band satellite systems enabling access to the L-band with a dual feed Cassegrain antenna system, high-gain antennas, advanced radomes, 5G mmWave and Wi-Fi devices.

-1.65 dB mean transmission loss (2-6 GHz), -0.8 dB mean reflection loss in Ku stopband (17.7-20.2 GHz) and -0.74 dB mean reflection loss in Ka stopband (27.5 – 30.0 GHz).