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Influence of finite ground planes on the transmission line current distribution

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3 Author(s)
Sabath, F. ; Cadlab-Analog Syst. Eng., Paderborn Univ., Germany ; Bucker, M. ; Oing, S.

The knowledge of the current distribution on the ground plane of a printed circuit board (PCB) is important to overcome many electromagnetic compatibility (EMC) problems. In this paper a method of moments (MoM) algorithm is used to evaluate the surface current distribution on the ground (GND) plane. In order to consider the effects of GND-planes on the signal behaviour on transmission lines, infinite planes are often assumed to reduce the calculation time. A comparison of the currents using finite and infinite ground planes shows a significant modification of the coupling to transmission lines placed in the layer above

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 3 )