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Scalar magnetostatic potential approach to the prediction of the excess inductance of grounded via's and via's through a hole in a ground plane

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2 Author(s)
Kok, P.A. ; Lab. of Electromagn. & Acoust., Ghent Univ., Belgium ; de Zutter, D.

A quasi-static method is described for calculating the excess inductance of via's. The considered via geometry contains connecting strips, pads on the via, and a finite ground plane thickness. An integral equation based on the scalar magnetic potential ψ is solved. The inductance is found by calculating the magnetic flux through a cut introduced to define ψ in an unequivocal way. The problem is generally solved for via through-holes; the grounded via-configuration is found as a limiting case. The influence of the geometric parameters on the via inductance is examined

Published in:
Microwave Theory and Techniques, IEEE Transactions on  (Volume:42 ,  Issue: 7 )

Date of Publication: Jul 1994

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