Abstract
Magnetic fields on the ground plane of a printed circuit board (PCB) are focused with consideration of the currents on it. The field distribution on the upper side (substrate side) and lower side of a PCB with a finite ground area are considered experimentally. The electric far field radiated from the PCB is measured and compared with calculated results, based on measuring edge currents. The experimental results show that a common-mode current causes larger magnetic fields on the under side of the PCB ground plane than on the upper side, and also a large electric far field. © 1998 Scripta Technica. Electron Comm Jpn Pt 1, 81(1): l4–21, 1998
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