有限なプリント基板の極近傍磁界分布 : 無線・光伝送

概要

論文の詳細を見る
Radiated emission from a printed circuit board (PCB) is a serious topic in a field of EMC/EMI. Magnetic fields generated by a PCB of finite area backed with copper foil are considered experimentally. Ground noises may cause the common-mode radiated emission, so that the magnetic fields near the back side of the ground plane are focused to consider the currents on it. Model lines of a trace located at the center of the PCB (centered model) and one near the edge (off-centered model) are used for measurment . Experimental results show that for the field levels near the back-side of the ground plane, the levels for the centered model are lower than those for the off-centered model. The fact suggest the increase of emission when the traces are located near edges of PCB.
社団法人映像情報メディア学会の論文
1994-02-24