First Radio-Astronomy Cryogenic Receivers with All-Metal 3D-Printed RF Components
The NAOJ ALMA Project and Advanced Technology Center have successfully fabricated corrugated all-metal 3D-printed horns for the ALMA Band 1 receivers (Radio Frequency: 35-50 GHz). Since around 2015, the NAOJ ALMA Project and the Advanced Technology Center have been studying the applications of additive manufacturing (AM), which produces three-dimensional objects by depositing, joining, and solidifying materials based on 3D models input to a control computer. Since astronomical receivers often have only one or two devices of each type per instrument and they require unique custom-made components, there is potential for effective use of additive manufacturing.