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An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits

Electromagnetic Compatibility (EMC) is an issue that has rapidly increased in importance in recent years, driven by legal, and conunercial demands. The EMC compliance requires the implementation of a total EMC approach to the development of electric and electronic circuitry such as in product...

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Main Author: Mozi, Aiza Mahyuni
Format: Thesis
Language:English
English
English
Published: 2009
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
TK7800-8360 Electronics
Online Access:http://eprints.uthm.edu.my/7278/1/24p%20AIZA%20MAHYUNI%20MOZI.pdf
http://eprints.uthm.edu.my/7278/2/AIZA%20MAHYUNI%20MOZI%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/7278/3/AIZA%20MAHYUNI%20MOZI%20WATERMARK.pdf
http://eprints.uthm.edu.my/7278/
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spelling my.uthm.eprints.72782022-07-12T01:53:44Z http://eprints.uthm.edu.my/7278/ An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits Mozi, Aiza Mahyuni TK Electrical engineering. Electronics Nuclear engineering TK7800-8360 Electronics Electromagnetic Compatibility (EMC) is an issue that has rapidly increased in importance in recent years, driven by legal, and conunercial demands. The EMC compliance requires the implementation of a total EMC approach to the development of electric and electronic circuitry such as in product manufacturing, with compliance being an integral part of the product life-cycle. Radiated emission test is one of the EMC criteria with a purpose to ensure that other products are protected from the emissions generated by it. TIns project is focused on the contribution of Differential Mode Current (Id) and Conunon Mode Current (Ie), that occur in electric and electronic circuitry wmch definitely affects the overall radiated emissions level. A standard test circuit was designed and implemented as the reference circuit. Several of the test circuits were designed and developed using appropriate layout design techniques such as loop area control and appropriate grounding techniques to ensure signal quality and functional performances due to EMC. The value of Id exhibited significantly much mgher values than Ie for frequency ranges between 30 MHz to 1000 MHz throughout all the measurements. Despite the significantly different values between Id and Ie , the total radiated emissions over the frequency ranges exlnbited consistent results. Tms indicate that although the values of Ie were noticeably lower than Id, Ie still dominated the radiated emission in electric and electronic circuitry. The effects of loop area and grounding techniques on radiated emission were also studied. There was a 0.3 % of reduction regarding loop area technique using double-sided PCB compared to the standard test circuit. The average value of radiated emission produced by the test circuit due to Id exhibited a reduction of3.42 % from the standard test circuit, wmle the average value of radiated emission produced by the test circuit due to Ie exhibited a reduction of 2.17 % from the standard test circuit. Future work should focus on improving the circuit design and development using multilayer PCB for optimal performance. Furthermore, effort can also be made on expanding the circuit design by implementing noisy sources such relays and motors, and improve the circuit with higher density and more traces. 2009-05 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/7278/1/24p%20AIZA%20MAHYUNI%20MOZI.pdf text en http://eprints.uthm.edu.my/7278/2/AIZA%20MAHYUNI%20MOZI%20COPYRIGHT%20DECLARATION.pdf text en http://eprints.uthm.edu.my/7278/3/AIZA%20MAHYUNI%20MOZI%20WATERMARK.pdf Mozi, Aiza Mahyuni (2009) An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits. Masters thesis, Universiti Tun Hussein Onn Malaysia.
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
English
English
topic TK Electrical engineering. Electronics Nuclear engineering
TK7800-8360 Electronics
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
TK7800-8360 Electronics
Mozi, Aiza Mahyuni
An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
description Electromagnetic Compatibility (EMC) is an issue that has rapidly increased in importance in recent years, driven by legal, and conunercial demands. The EMC compliance requires the implementation of a total EMC approach to the development of electric and electronic circuitry such as in product manufacturing, with compliance being an integral part of the product life-cycle. Radiated emission test is one of the EMC criteria with a purpose to ensure that other products are protected from the emissions generated by it. TIns project is focused on the contribution of Differential Mode Current (Id) and Conunon Mode Current (Ie), that occur in electric and electronic circuitry wmch definitely affects the overall radiated emissions level. A standard test circuit was designed and implemented as the reference circuit. Several of the test circuits were designed and developed using appropriate layout design techniques such as loop area control and appropriate grounding techniques to ensure signal quality and functional performances due to EMC. The value of Id exhibited significantly much mgher values than Ie for frequency ranges between 30 MHz to 1000 MHz throughout all the measurements. Despite the significantly different values between Id and Ie , the total radiated emissions over the frequency ranges exlnbited consistent results. Tms indicate that although the values of Ie were noticeably lower than Id, Ie still dominated the radiated emission in electric and electronic circuitry. The effects of loop area and grounding techniques on radiated emission were also studied. There was a 0.3 % of reduction regarding loop area technique using double-sided PCB compared to the standard test circuit. The average value of radiated emission produced by the test circuit due to Id exhibited a reduction of3.42 % from the standard test circuit, wmle the average value of radiated emission produced by the test circuit due to Ie exhibited a reduction of 2.17 % from the standard test circuit. Future work should focus on improving the circuit design and development using multilayer PCB for optimal performance. Furthermore, effort can also be made on expanding the circuit design by implementing noisy sources such relays and motors, and improve the circuit with higher density and more traces.
format Thesis
author Mozi, Aiza Mahyuni
author_facet Mozi, Aiza Mahyuni
author_sort Mozi, Aiza Mahyuni
title An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
title_short An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
title_full An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
title_fullStr An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
title_full_unstemmed An evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
title_sort evaluation on the contribution of differential mode and common mode currents in radiated emission of digital circuits
publishDate 2009
url http://eprints.uthm.edu.my/7278/1/24p%20AIZA%20MAHYUNI%20MOZI.pdf
http://eprints.uthm.edu.my/7278/2/AIZA%20MAHYUNI%20MOZI%20COPYRIGHT%20DECLARATION.pdf
http://eprints.uthm.edu.my/7278/3/AIZA%20MAHYUNI%20MOZI%20WATERMARK.pdf
http://eprints.uthm.edu.my/7278/
_version_ 1738581599746785280
score 13.211869

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