3D-Printed Frequency Selective Surfaces for Microwave Absorbers

A flat periodic FSS (frequency selective surface) is presented, which is fully fabricated by a 3D-printer and commercial 3D printing filaments which normally are used for printing metal like structures. The FSS absorber structure was developed and optimized for 10 GHz, fabricated with the 3D printer, measured afterwards and compared with the simulations. Further simulations were made with the new materials at higher frequencies and the results confirm that 3D printing technology works well and could be used to the best advantage for absorbers and other applications in the frequency range below 100 GHz.