Masters Theses

Abstract

"The work presented in this thesis can be broadly categorized under two main headings, estimation of electromagnetic interference (EMI) performance and characterization of EMI performance.

A numerical model of capacitive coupling between two orthogonally crossing double stripline was developed earlier by Kenji Araki and Yoshio Kami at the University of Electro-Communications, Japan. Their model was shown to be accurate up to 3GHz. A verification of their numerical model with full wave simulations is presented here.

In another work done by Shaohua Li, dynamic currents in the power pins of a microcontroller were predicted by using an IC model. The ultimate aim was to predict magnetic field coupling from the microcontroller to a TEM-cell. However, attempts to estimate this coupling turned out to be unsuccessful. An improved calculation method along with better estimations of mutual inductances is presented here. Prediction of magnetic field coupling within up to 6dB at clock frequency and its harmonics were then made.

A work involving experimental investigation of the coupling physics of high frequency currents was done by Ketan Sringarpure, Francesco de Paulis, Xu Jianfeng. The simulation and experimental work with the actual mother board did not lead to any significant conclusions. Test boards were then developed by Ketan to re-investigate this physics using simpler geometries. This work was picked on and experimental phase was repeated carefully with the newly developed test boards. The study so far has helped in developing a useful picture that clearly shows the effects of poor referencing of high frequency currents on EMI"--Abstract, page iii.

Advisor(s)

James L. Drewniak.

Committee Member(s)

Daryl G. Beetner
David Pommerenke

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Summer 2009

Journal article titles appearing in thesis/dissertation

  • Prediction of TEM-cell emission from a microcontroller model
  • Capacitive coupling between orthogonally crossing double strip lines
  • Investigation on implications of discontinuous referencing of high speed communication lines in PCBs

Pagination

x, 68 pages

Note about bibliography

includes bibliographical references (pages 66-67)

Rights

© 2009 Hemant Bishnoi, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Electromagnetic compatibility
Electromagnetic devices -- Design
Electromagnetic interference

Thesis Number

T 9537

Print OCLC #

472275441

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