Doctoral Dissertations


Xiaoning Ye


“Electronic devices continue to operate at increasing speeds and consume more power, which significantly increases electromagnetic interference (EMI) concerns and makes it more challenging to meet the radiated emissions requirements. A reliable numerical modeling tool and/or an effective measurement technique are always desirable for evaluating EMC performance, developing design guidelines, or seeking possible design solutions. In this work, numerical modeling and experimental techniques were developed and applied, and were both directed toward engineering design for EMC.

Experimental techniques were developed and the finite-difference time-domain (FDTD) method was used to investigate and evaluate the EMI performance associated with inter-board connection for frequencies into the GHz range. The FDTD method was also successfully used as a design tool to provide insight and design directions for commercial connector products for EMC concerns.

EMI mitigation approaches that utilize multi-layer power bus stacks and via stitching of reference planes were studied, and, design curves and an empirical equation were provided.

New features were developed to improve the conventional FDTD method. A Debye model was incorporated to approximate the dispersive characteristics of the FR-4 dielectric substrate. Utilizing the numerical tool, EMC design for DC power buses was investigated by addressing typical issues in power bus noise reduction. Two-port networks were successfully incorporated into the modeling, given the S-parameters of the network. The improved codes were then applied for studying EMI filtering of I/O lines”--Abstract, page iv.


Drewniak, James L.

Committee Member(s)

Hubing, Todd H.
Van Doren, Thomas, 1940-
DuBroff, Richard E.
Riggins, David W.


Electrical and Computer Engineering

Degree Name

Ph. D. in Electrical Engineering


University of Missouri--Rolla

Publication Date

Fall 2000

Journal article titles appearing in thesis/dissertation

  • Investigations of the EMI associated with inter-board connections for multi-PCB configurations
  • Inter-PCB connector evaluation for EMI control: FDTD modeling and measurement techniques
  • EMI mitigation with multi-layer power bus stacks and via stitching of reference planes
  • DC power-bus design using FDTD modeling with dispersive media and surface mount technology components
  • Incorporating two-port networks with s-parameters into FDTD
  • FDTD modeling incorporating a two-port network for I/O line EMI filtering design


xiii, 159 pages

Note about bibliography

Includes bibliographical references.


© 2000 Xiaoning Ye, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type




Thesis Number

T 7852

Print OCLC #


Link to Catalog Record

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