Research on an automatic calibration device for near-zone field strength measuring instruments

With the increasing attention to environmental electromagnetic radiation, the calibration of near-zone field strength measuring instruments, which are important measurement tools, has always been of great concern. This article proposes a calibration device for a near-zone field strength measuring instrument based on GTEM Cell and field strength probe. The calibration device utilizes a field strength probe to transmit the standard field strength, combined with a power meter to monitor the effective field strength value in the selected area, which is then set up for automatic detection by the test software. It realizes the automatic calibration of the near-zone field strength measuring instrument in GTEM Cell, which not only reduces the establishment cost but also improves work efficiency.