Detection and identification of electronic circuits based on their unintentional radiated emissions and an investigation of the effect of chassis connections on radiated EMI from PCBs

Author

Ahmed Sharief Shaik

Abstract

"The thesis consists of two sections. Section 1 of the thesis describes a method for detecting and identifying electronic circuits based on their unintentional electromagnetic emissions. This concept can be applied to help find hidden electronic devices such as video cameras, active microphones, timers and computers.

Section 2 of the thesis describes an investigation on the effect of grounding or floating printed circuit boards at chassis connections. Printed circuit boards are often mounted to a metal plate or chassis. Sometimes an electrical connection between the board and the chassis is made at the mounting points and other times no electrical connection is made. The results show that boards properly grounded to a chassis plate exhibit significantly lower radiated emissions. However improper grounding can significantly increase radiated emissions at some frequencies. This section of the thesis will be published in the proceedings of IEEE-EMC-2006 conference"--Abstract, page iii.

Advisor(s)

Hubing, Todd H.

Committee Member(s)

Beetner, Daryl G.
DuBroff, Richard E.

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Publisher

University of Missouri--Rolla

Publication Date

Summer 2006

Pagination

vi, 21 pages

Note about bibliography

Includes bibliographical references (page 20).

Rights

© 2006 Ahmed Sharief Shaik, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Subject Headings

Electromagnetic interferenceElectronic circuit designPrinted circuits -- Design and construction

Thesis Number

T 9024

Print OCLC #

85864743

Recommended Citation

Shaik, Ahmed Sharief, "Detection and identification of electronic circuits based on their unintentional radiated emissions and an investigation of the effect of chassis connections on radiated EMI from PCBs" (2006). Masters Theses. 5918.
https://scholarsmine.mst.edu/masters_theses/5918