Quantifying EMI Resulting from Finite-Impedance Reference Planes

Todd H. Hubing, Missouri University of Science and Technology
Fei Sha
James L. Drewniak, Missouri University of Science and Technology
Thomas Van Doren, Missouri University of Science and Technology
Cheung-wei Lam
David M. Hockanson

This document has been relocated to http://scholarsmine.mst.edu/ele_comeng_facwork/1845

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Abstract

Parasitic inductance in printed circuit board (PCB) geometries can detrimentally impact the electromagnetic interference (EMI) performance and signal integrity of high-speed digital designs. This paper identifies and quantifies the parameters that affect the inductance of some typical PCB geometries. Closed-form expressions are provided for estimating the inductances of simple trace and ground plane configurations