NDLI: High-current adaptive impedance matching in narrowband power-line communication systems

Content Provider	IEEE Xplore Digital Library
Author	Yuhao Sun Amaratunga, G.A.J.
Copyright Year	2011
Description	Author affiliation: Electrical Engineering Division, Department of Engineering, Cambridge University, 9 JJ Thomson Ave., CB3 0FA, UK (Yuhao Sun; Amaratunga, G.A.J.)
Abstract	This paper proposes a high current impedance matching method for narrowband power-line communication (NPLC) systems. The impedance of the power-line channel is time and location variant; therefore, coupling circuitry and the channel are not usually matched. This not only results in poor signal integrity at the receiving end, but also leads to a higher transmission power requirement to secure the communication process. To offset this negative effect, a high-current adaptive impedance circuit to enable impedance matching in power-line networks is reported. The approach taken is to match the channel impedance of N-PLC systems is based on the General Impedance Converter (GIC). In order to achieve high current a special coupler in which the inductive impedance can be altered by adjusting a microcontroller controlled digital resistor is demonstrated. It is shown that the coupler works well with heavy load current in power line networks. It works in both low and high transmitting current modes, a current as high as 760 mA has been obtained. Besides, compared with other adaptive impedance couplers, the advantages include higher matching resolution and a simple control interface. Experimental results are presented to demonstrate the operation of the coupler.
Starting Page	329
Ending Page	334
File Size	519680
Page Count	6
File Format	PDF
ISBN	9781424477517
e-ISBN	9781424477500
e-ISBN	9781424477494
DOI	10.1109/ISPLC.2011.5764417
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-03
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance Couplers Inductance Capacitors Resistors Impedance matching Resistance narrowband power-line communication automatic impedance adaptation digital inductive reactance convertor general impedance converter
Content Type	Text
Resource Type	Article

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