Prediction of the Radiated Emission(RE)s due to the PCB Power-Bus' Resonance Modes and Mitigation of the RE Levels

Kahng, Sung-Tek

doi:2007.7.1.7

J. Electromagn. Eng. Sci > Volume 7(1); 2007 > Article

Journal of the Korean Institute of Electromagnetic and Science 2007;7(1):7-11.
DOI: https://doi.org/10.5515/JKIEES.2007.7.1.007

Prediction of the Radiated Emission(RE)s due to the PCB Power-Bus' Resonance Modes and Mitigation of the RE Levels

Sung-Tek Kahng

Department of Information and TeleCommunication Engineering, University of Incheon

Abstract

PCB Power-Bus (comprising power/ground planes) impedance and fields are evaluated by an efficient series expansion method that is suggested in this paper. It is used to investigate the structure's radiated emission(RE) levels and find acceptable ways of loading the power/ground planes such as decoupling capcitor(DeCap)s, balanced feeding and slits, in order to reduce the interferences. Also, the calculations and measurements of a proposed geometry are verified by vector fitting as a analysis model to check the behavior of the slit.

Key words: PCB Power/Ground Planes, Vector Fit, Modal Expansion, RE, Resonance