NDLI: High-speed common-mode prediction method for PCBs having a signal line close to the ground edge

Content Provider	IEEE Xplore Digital Library
Author	Watanabe, T. Namba, A. Fujihara, H. Toyota, Y. Wada, O. Koga, R.
Copyright Year	2003
Description	Author affiliation: Ind. Technol. Center of Okayama Prefecture, Japan (Watanabe, T.)
Abstract	Evaluation of common-mode excitation is important to efficiently reduce the EMI radiated from printed circuit boards (PCBs). We have focused on the excitation mechanisms of the common-mode current flowing on a PCB. In a previous paper, we explained a mechanism of common-mode excitation in terms of the current division factor, which expresses the degree of imbalance of a transmission line. The calculation is two-dimensional so the evaluation time is much shorter than that of FDTD or other 3D full-wave simulations. The calculated reduction of common-mode radiation from simple PCBs agreed well with the measured value. In this paper, to demonstrate the effectiveness of this approach, we apply it to various PCBs, such as one that has a signal trace close to a board edge or one with guard bands, and evaluate the effectiveness of the common-mode reduction. Our calculated and experimental results are in good agreement.
Starting Page	28
Ending Page	33
File Size	324398
Page Count	6
File Format	PDF
ISBN	0780378350
DOI	10.1109/ISEMC.2003.1236558
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-08-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Prediction methods Transmission line theory Voltage Electromagnetic compatibility Power transmission lines Finite difference methods Toy industry Communication networks Printed circuits Distributed parameter circuits
Content Type	Text
Resource Type	Article

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