Masters Theses

Keywords and Phrases

Partial Element Equivalent Circuit; Printed Circuit Board

Abstract

"Power Distribution Network (PDN) for Printed Circuit Board (PCB) design requires proper power integrity analysis. In order to deliver a low-ripple DC voltage from a Voltage Regulator Module (VRM) to an Integrated Circuit (IC), a certain target input impedance should be achieved. Developing simple physics-based equivalent circuit models are essential for understanding how a system works and making crucial design decisions. In this work, the input impedance of a decoupling capacitor due to traces, pads and via discontinuities are investigated using the Physics-based Model Size Reduction (PMSR) method. Various decoupling capacitor connection methods are compared and design guidelines are provided for reducing the equivalent inductance to meet target impedance requirements. It is shown that a shared pad having 179 pH equivalent Labove loop inductance is a better design choice as compared to a doublet or shared via design with 218 pH and 406 pH Labove loop inductance respectively.

The second part of this thesis relates to BroadR-Reach® technology, a point-to-point Ethernet Physical Layer (PHY) standard, which is used in automotive applications. This technology allows full-duplex communication between two devices over a single, Unshielded Twisted wire Pair (UTP) cable. Here, alien crosstalk in a 6 UTP bundle is investigated for meeting electromagnetic compatibility requirements. The performance of Alien Near-End and Far-End Crosstalk of two different UTPs with and without an inline Circular Plastic Connector (CPC) are compared to standard limits. An inline connector in the middle of a 15 m 6 UTP cable bundle, with a 25 cm untwisted region fails the PSANEXT standard limit by 4 dB at 100 MHz, while the same bundle without the connector passes the standard by a margin of 8 dB at 100 MHz"--Abstract, page iii.

Advisor(s)

Beetner, Daryl G.

Committee Member(s)

Ruehli, Albert E.
Drewniak, James L.

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Fall 2015

Pagination

ix, 56 pages

Note about bibliography

Includes bibliographic references (pages 53-55).

Rights

© 2015 Tamar Makharashvili, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Electromagnetic compatibility -- Mathematical models
Electromagnetic interference -- Mathematical models
Printed circuits -- Design
Crosstalk -- Mathematical models
Electric power distribution -- Mathematical models

Thesis Number

T 10792

Electronic OCLC #

936208557

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