Review on Precision Manufacturing Technology of Millimeter-wave Waveguide Device

The precision manufacturing technology is the key technology to ensure the performance of millimeter-wave waveguide device. Firstly, this paper defines the types of precision manufacturing technologies of millimeter-wave waveguide device according to the changes of device volume in the manufacturing process, and they are mainly divided into three categories: subtractive manufacturing, equal material manufacturing and additive manufacturing. Then, the application researches of various process technologies of millimeter-wave waveguide device are introduced. The material selection, structural characteristics, dimensional accuracy, processing quantity and cycle cost of precision manufacturing are analyzed, and the process integration design and implementation scheme are provided. Finally, the development trend of precision manufacturing technology is prospected. The review will provide a useful reference for the further research and application of precision manufacturing technology of millimeter-wave waveguide device.