Masters Theses

Zhe Li

Abstract

"Common-mode chokes are widely used as suppression filters against interference of common-mode noise in high-speed differential signaling. This thesis focuses on investigating the characteristics of common-mode chokes. Mixed-mode S-parameters are presented as a useful concept for explaining the modal operation of differential circuits.

Three methods for measuring common-mode and differentia-mode S-parameters of common-mode chokes are demonstrated. The three methods involve (1) ABCD chain matrix, 2) using hybrid couplers and 3) modal decomposition. Each measurement method provides a specific level of accuracy. The modal decomposition method can work up to 10GHz.

SPICE equivalent circuit model of common-mode chokes and the extraction of model parameters are provided. Parameter extraction of the equivalent circuit model is performed using mixed-mode S-parameters"--Abstract, page iii.

Advisor(s)

Pommerenke, David

Committee Member(s)

Drewniak, James L.
Hubing, Todd H.

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 2003

Pagination

x, 53 pages

Note about bibliography

Includes bibliographical references (pages 51-52)

Rights

© 2003 Zhe Li, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Electromagnetic interference

Thesis Number

T 8393

Print OCLC #

55471911

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