Title :
Near-field imaging of radiated emission sources on printed-circuit boards
Author :
Laurin, Jean-Jacques ; Ouardhiri, Zacharia ; Colinas, Jérôme
Author_Institution :
Dept. of Electr. & Comput. Eng., Ecole Polytechnique de Montreal, Que., Canada
Abstract :
This paper presents a technique to assess the level of radiated emissions generated by printed-circuit board (PCB) structures based on equivalent magnetic currents. These currents are extracted from near-field measurements taken with a very high resolution (step size << ?) in comparison with near-field antenna applications. Near-field data allow the visualization and extraction of common-mode currents near transmission line discontinuities such as bends. This effect is investigated for microstrip and CPW lines
Keywords :
coplanar waveguides; electric field measurement; electromagnetic interference; magnetic field measurement; microstrip lines; printed circuits; CPW lines; EMC; bends; common-mode currents; equivalent magnetic currents; microstrip lines; near-field antenna; near-field imaging; near-field measurements; printed-circuit boards; radiated emission sources; transmission line discontinuities; Antenna measurements; Coplanar waveguides; Current measurement; Data mining; Data visualization; High-resolution imaging; Microstrip; Size measurement; Transmission line discontinuities; Transmission line measurements;
Conference_Titel :
Electromagnetic Compatibility, 2001. EMC. 2001 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-6569-0
DOI :
10.1109/ISEMC.2001.950665
