Equivalence between in-house and conventional EM immunity test techniques

[摘要] Conventional immunity tests are both time consuming and costly. There isthus a reasonable interest in relatively quick, but accurate and costeffective, in-house pre-compliance test techniques within an engineeringdesign-house. This thesis provides information on the equivalence betweenin-house and conventional immunity test techniques.Three techniques were evaluated, namely: 1. E-field radiation with a logperiodic antenna (conventional test technique); 2 E-field radiation with an inhousedesigned and constructed modified TEM cell (in-house testtechnique); 3. Current injection using a complete off the shelf EMCO currentprobe device (in-house test technique).After the transfer data of the EMCO probe was verified, the modified TEMcell design, construction and equivalent measurement tests wereperformed. These tests revealed that within the respective bandwidth ofinterest, the devices produced results that are equivalent to each otherwithin 0.9dB. Hence equivalence between in-house and conventional testtechniques is possible.

[发布机构] Stellenbosch University