An Experimental Study of Dielectric 3D Printed Cylindrical Cavity

Abstract

This paper presents an experimental study on the feasibility of dielectric 3D printing technology in fabricating cylindrical cavities for a short turn-around time at reduced cost. A cylindrical cavity resonating in the 2-6 GHz band is fabricated by a stereolithography apparatus (SLA) 3D printer. The inner surface of the cylindrical cavity is metalized by means of metal foil and sprayed metal coating. The measured results show that the S-parameter agrees well with the simulation. This indicates that the 3D printing technology is suitable for making such microwave devices.