Development of line coupling circuit for OFDM PLC modem

Date of Publication

2014

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Electronics and Communications Engineering

Subject Categories

Electrical and Electronics | Engineering

College

Gokongwei College of Engineering

Department/Unit

Electronics and Communications Engineering

Thesis Adviser

Ann E. Dulay

Defense Panel Member

Alexander C., Abad

Elmer R. Magsino

Abstract/Summary

Power Line Communications (PLC) is an emerging technology that utilizes the power lines as the communication medium to transmit control signal or data from one device to another. This is made possible through the use of a PLC modem. The line coupling circuits are vital in the operation of a power line communication modem. The power line control is found to have an impedance of 2 ohms to 20 ohms in low voltage networks particularly in-building wiring while most PLC modems have an impedance of about 50 ohms. This impedance mismatch would require higher transmit power and could potentially produce damaging EMI or spurious radiation. The line coupling unit (LCU) must be designed to match the modem impedance with the power lime impedance while filtering the harmful 220V, 60 Hz power line voltage.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU18747

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

1v. (various foliations) : illustrations (some colored) ; 28 cm.

Keywords

Electric power transmission; Electric lines--Carrier transmission

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