A closed-form expression for estimating radiated emissions from the power planes in a populated printed circuit board

Author

Shim, Hwan-Woo ; Hubing, Todd H.

Author_Institution

Samsung Corp., Gumi-City

Volume

48

Issue

1

fYear

2006

Firstpage

74

Lastpage

81

Abstract

An expression for the maximum intensity of radiated emissions from a rectangular power bus structure has been derived based on an analytical cavity-resonator model. The effect of components mounted on the board is modeled by modifying the propagation constant of the waves within the power bus structure. The radiated field intensity is calculated using the equivalent magnetic current around the edges of the power bus structure together with the modified propagation constant. Measurements of a populated test board show that the derived closed-form expression estimates the level of the maximum radiation intensity with reasonable accuracy

Keywords

cavity resonators; magnetic fields; printed circuits; cavity-resonator model; equivalent magnetic current; populated printed circuit board; power bus structure; power planes; propagation constant; radiated emissions estimation; radiated field intensity; rectangular power bus structure; Analytical models; Circuit noise; Closed-form solution; Costs; Frequency; Magnetic analysis; Magnetic field measurement; Printed circuits; Propagation constant; Resonance; Cavity model; decoupling; power bus noise; propagation constant; radiated emissions;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2005.861377

Filename

1614041