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Performance Investigation of Feed Horn using FDM 3D Printing Technology

We fabricated feed horn using 3D printing technology and conductive coating material. The type of printing is FDM (Fused Deposition Modeling) and because printing material is dielectric, the printed antenna was coated by conductive material. To test the conductivity of coating material, two short plates and rectangular waveguide are fabricated and measured with a frequency response. Finally, frequency response and measured results were compared.