DocumentCode
2909810
Title
DC Power Supply Design for Broadband PLC Modem with Low Common-Mode EMI Coupling
Author
Wang, Lin Biao ; See, Kye Yak ; So, Ping Lam ; Pang, Teng Seng ; Oswal, Manish
Author_Institution
Nanyang Technol. Univ., Singapore
fYear
2007
fDate
26-28 Sept. 2007
Firstpage
414
Lastpage
417
Abstract
A power line communications (PLC) test bed is designed to understand the mechanism of common-mode (CM) coupling from the PLC modem circuitry to the power lines. It is found that the step-down power transformer that provides the DC power supply to the modem circuitry causes significant CM current on the power lines. By removing the power transformer and powering the modem circuitry with an isolated DC source, we have demonstrated that the CM current on the power lines could be reduced by as much as 15 dB.
Keywords
DC power transmission; carrier transmission on power lines; electromagnetic interference; modems; power transformers; DC power supply design; broadband PLC modem circuitry; low common-mode EMI coupling; power line communications; power transformer; Circuit testing; Coupling circuits; Earth; Electromagnetic interference; Frequency; Modems; Power supplies; Power transformers; Programmable control; Resistors;
fLanguage
English
Publisher
ieee
Conference_Titel
Integrated Circuits, 2007. ISIC '07. International Symposium on
Conference_Location
Singapore
Print_ISBN
978-1-4244-0797-2
Electronic_ISBN
978-1-4244-0797-2
Type
conf
DOI
10.1109/ISICIR.2007.4441886
Filename
4441886
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