On Impedance Matching in a Power-Line-Communication System

Piante, Marco De; Tonello, Andrea M.

doi:10.1109/tcsii.2016.2530218

Cited by 25 publications

(20 citation statements)

References 12 publications

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“…In Refs. [59,60], the authors summarized three main impedance-matching methods adopted in PLC: equal impedance matching, complex conjugate matching and voltage maximization matching.…”

Section: Based On Matching Methodsmentioning

confidence: 99%

“…[67], the authors use the premise of the equal impedance matching method to design a PLC coupling circuit with an input filter and to obtain optimal signal power transfer at the PLC modem. For the complex conjugate matching case, the power reflection coefficient [59,68] can be expressed as…”

Section: Based On Matching Methodsmentioning

confidence: 99%

“…As shown in Table 1, the voltage at the receiver ( ) can be expressed as a function of and . The parameters B and D are the components of the ABCD matrix ( ) associated to the two- For the complex conjugate matching case, the power reflection coefficient [59,68] can be expressed as…”

Section: Based On Matching Methodsmentioning

confidence: 99%

“…Thus, a voltage maximization matching method was introduced in Ref. [59] to maximize the SNR, where voltage maximization matching operates at R s = 0 and X s = −X i ; it ultimately yields a higher received voltage and four times the active power than the complex conjugate matching. Table 1 lists the performance results of three impedance matching methods.…”

Section: Based On Matching Methodsmentioning

confidence: 99%

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A Review of Impedance Matching Techniques in Power Line Communications

Wang

Cao

2019

Electronics

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Impedance mismatch that degrades signal power transfer and affects communication reliability is a major obstacle for power line communications (PLC). Impedance matching techniques can be designed to effectively compensate for the impedance mismatch between PLC modems and power line networks at a specific frequency or for a given frequency band. In this paper, we discuss the tradeoffs that need to be made when designing an effective impedance matching network. We also make a comprehensive review of previous state-of-the-art PLC impedance matching techniques and provide a useful classification of each technique. Finally, we discuss important issues (concerns) and provide suggestions for research directions deserving more attention. This review provides a useful guideline for researchers and manufacturers to quickly understand impedance matching principles and facilitate the design of an effective impedance matching coupler for PLC applications.

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“…In Refs. [59,60], the authors summarized three main impedance-matching methods adopted in PLC: equal impedance matching, complex conjugate matching and voltage maximization matching.…”

Section: Based On Matching Methodsmentioning

confidence: 99%

Section: Based On Matching Methodsmentioning

confidence: 99%

Section: Based On Matching Methodsmentioning

confidence: 99%

Section: Based On Matching Methodsmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Impedance Matching Techniques in Power Line Communications

Wang

Cao

2019

Electronics

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“…In classical half-duplex PLC systems, maximum communication rate is obtained by maximizing the transferred voltage, or more in general the SNR at the receiver [16]. Therefore, PLMs are usually equipped with Z T ∼ 1Ω, Z L ∼ 10kΩ and a switch that selects the correct impedance based on the link status [17].…”

Section: Symmetries Of the Power Line Channelmentioning

confidence: 99%

Secure PHY Layer Key Generation in the Asymmetric Power Line Communication Channel

Passerini

Tonello

2020

Electronics

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Leakage of information in power line communication networks is a threat to privacy and security both in smart grids and in-home applications. A way to enhance security is to encode the transmitted information with a secret key. Relying on the channel properties, it is possible to generate a common key at the two communication ends without transmitting it through the broadcast channel. Since the key is generated locally, it is intrinsically secure from a possible eavesdropper. Most of the existing physical layer key generation techniques have been developed for symmetric channels. However, the power line channel is in general not symmetric, but just reciprocal. Therefore, in this paper, we propose two novel methods that exploit the reciprocity of the power line channel to generate common information at the two intended users. This information is processed through different quantization techniques to generate secret keys. To assess the security of the generated keys, we analyze the spatial correlation of the power line channels and verify the low correlation of the possible eavesdropping channels. The two proposed methods are tested on a measurement dataset. The results show that the information leaked to possible eavesdroppers has very low correlation to any secret key.

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Design and implementation of an open source transmission line impedance matching educational framework

Varan

Erguzel

Genç

et al. 2020

Comp Applic In Engineering

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Determining input impedance, assigning reflection coefficient, and matching load impedance are important transmission line problems those involve complex calculation steps because of complex connection architectures in transmission lines. Efficient understanding of such problems in undergraduate and graduate courses should be supported by rich visualization tools. The Smith chart is a convenient tool for transmission line calculations especially for wave propagation and maximum power theory that discusses impedance matching problems. In this context, we can say that Java is a widely used open source educational tool having strong computational environment for research and development aims. In this study, an open source transmission line impedance matching educational framework (TLIME) has been designed to teach efficiently wave propagation and maximum power theory that discusses the impedance matching problems. The success of developed educational framework has been measured by a questionnaire held in courses in the third and fourth years of the electrical and electronics engineering undergraduate program at Sakarya University of Applied Sciences, Turkey. The visual preparation of the problem solutions with rich graphical user interface and simulations of the mathematical representations has been evaluated to contribute to a better understanding of the wave propagation and impedance matching transmission line subjects. The functionality and simplicity of the developed framework scored by over 82% among course enrolled students. The rest of the paper is organized as follows. Section 2 explains transmission line impedance matching problem in the context of maximum power theory. Section 3 discusses transmission line planning and problem solving with Smith chart. Section 4 discusses explanation and usage of developed TLIME framework and last section discusses results.

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On Impedance Matching in a Power-Line-Communication System

Cited by 25 publications

References 12 publications

A Review of Impedance Matching Techniques in Power Line Communications

A Review of Impedance Matching Techniques in Power Line Communications

Secure PHY Layer Key Generation in the Asymmetric Power Line Communication Channel

Design and implementation of an open source transmission line impedance matching educational framework

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