Radiated Emission - Measurement Standards



Classical apparatus can disturb other ones. For instance here, a simple robot or a PC can lead to disturbances in the vicinity (here a radio).

The goal is to characterise the radiated emission capability of such devices.


D : d corresponds to the distance between the device under test and the antenna :

  • Industrial environment d=30m
  • Domestic environment d=10m

H : h distance from the device to the ground :
  • Table equipment h=0.8m
  • Ground equipment h=0.1m

To measure radiated emissions (Electric field E) the main trouble is to take care of reflections from the ground.

To insure measurement reproducibility, the ground must be as much a conductor as possible (perfect reflection) and plane.