Mitigating Power Bus Noise with Embedded Capacitance in PCB Designs

Minjia Xu
Todd H. Hubing, Missouri University of Science and Technology
Juan Chen
James L. Drewniak, Missouri University of Science and Technology
Thomas Van Doren, Missouri University of Science and Technology
Richard E. DuBroff, Missouri University of Science and Technology

This document has been relocated to http://scholarsmine.mst.edu/ele_comeng_facwork/1731

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Abstract

This paper investigates the power bus noise and power bus impedance of printed circuit boards with four different kinds of embedded capacitance. These boards have power-ground plane pairs separated by a very thin layer of material with high dielectric permittivity. It is shown that embedded capacitance effectively reduces power bus noise over the entire frequency range evaluated (up to 5 GHz)