Engineering Design and Implementation of Near-field Measurement System based on High Precision Direct Drive Technology

A near-field scanning measurement system based on direct drive technology is proposed in this paper. The proposed system consists of near-field scanning frame, control box, and self-programmed API software. To realize the precise control of the system, the control box integrates filters, relays, and 24 V power supplies, and two drivers, enabling fast and precise scanning. Compared with the traditional near-field method, this measurement system has the characteristics of high measurement accuracy which is potentially to be used under the frequency up to millimeter wave and terahertz bands.