Interference of Spread-Spectrum EMI and Digital Data Links under Narrowband Resonant Coupling

Crovetti, Paolo; Musolino, Francesco

doi:10.3390/electronics9010060

Cited by 17 publications

(12 citation statements)

References 33 publications

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“…Generally speaking, communication systems can be divided into two main types: those featuring forward error correction codes and un-coded communication systems. In the case of coded communication systems like in [22,23], the influence of SSM on I2C was studied and the results show that the SSM modulation results in more problems for digital communication channels than the normal non-SSM switching signals. In contrast, in the case of un-coded communication systems such as RS 232, the SSM EMI has almost the same effect on the communication system as the EMI generated from the conventionalmodulation.…”

Section: Introductionmentioning

confidence: 99%

The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel

et al. 2021

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Power line communication (PLC) is increasingly emerging as an important communication technology for the smart-grid environment. As PLC systems use the existing infrastructure, they are always exposed to conducted electromagnetic interference (EMI) from switching mode power converters, which need to be tightly controlled to meet EMC regulations and to ensure the proper operation of the PLC system. For this purpose, spread-spectrum modulation (SSM) techniques are widely adopted to decrease the amplitude of the generated EMI from the power converters so as to comply with EMC regulations. In this paper, the influence of a spread-spectrum-modulated SiC-based buck converter on the G3-PLC channel performance is described in terms of channel capacity reduction using the Shannon–Hartley equation. The experimental setup was implemented to emulate a specific coupling path between the power and communication circuits and the channel capacity reduction was evaluated by the Shannon–Hartley equation in several operating scenarios and compared with the measured frame error rate. Based on the obtained results, SSM provides the EMI spectral peak amplitude reduction required to pass the electromagnetic compatibility (EMC) tests, but results in increased EMI-induced channel capacity degradation and increased transmission error rate in PLC systems.

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Section: Introductionmentioning

confidence: 99%

The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel

et al. 2021

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“…From the EMC point of view, utilization of a RanM is the right approach to reducing the EMI level below limits described in EMC standards [19]. However, low numbers of studies have been conducted to check the practical effect of the RanM on telecommunication devices [20,21]. Some studies confirm no difference between the DetM and RanM, especially in the uncoded communication systems, where the observed statistics of communication error are comparable or inconclusive [13,21].…”

Section: Introductionmentioning

confidence: 99%

Deterministic vs. Random Modulated Interference on G3 Power Line Communication

et al. 2021

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Power line communication (PLC), which is often used in advanced metering infrastructure (AMI), may be disturbed by adjacent high-power converters. Due to the inherent features of this type of communication, classic methods of improving communication reliability (filtration and circuit separation) cannot be fully applied. Information coding (modulation) methods are used in PLC to increase the data transfer rate and improve noise immunity. Random modulations (RanM) are used in converters to lower emission levels. Therefore, we investigate how the converters’ modulation parameters and coding methods may affect PLC communication reliability in the paper. To this end, we employ an experimental approach. In particular, the analysis of the influence of deterministic modulation (DetM) and (RanM) on the performance of narrowband G3-PLC is shown. We emulated an actual situation where EMI generated by the DC/DC converter disturbed the PLC transmission. The experimental results show the transmission error rates for different operating scenarios. The natural (experimental) system results, due to the complexity of the disturbing signals, differ from the literature data obtained by simulation for normalized signals.

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“…The most appropriate strategy is to consider electromagnetic compatibility during the system design stage. If EMC is ignored until the problem arises during the first functional tests or product certification, the solutions usually result in a higher cost [4]. The possibility of applying specific techniques for the elimination of interferences is reduced as a system is developed.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Nanocrystalline Cores for EMI Suppression in Cables

Suarez¹,

Victoria²,

Torres³

et al. 2021

Nanocrystals [Working Title]

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Electromagnetic interferences (EMI) can cause different kinds of problems in digital and analog systems, leading to malfunctions, system reboots, or even permanent damage to the system if this is not adequately designed or protected. Nowadays, most electronic products are connected to the main power network or are designed to be interconnected with others through cables. These cable interconnections are becoming more difficult due to the rigid restrictions related to the accomplishment of electromagnetic compatibility (EMC) compliance. When the cables of a system represent an EMI source, it cannot pass the conducted or radiated emissions test. A widely used technique to reduce these problems is applying an EMI suppressor such as a sleeve core. This EMI suppressor provides selective attenuation of undesired interference components that the designer may wish to suppress, and it does not significantly affect the intended signal. This contribution focuses on analyzing different nanocrystalline (NC) EMI suppressors’ performance intended for attenuating interferences in cables. Some NC novel samples are characterized and compare to MnZn and NiZn cores to determine this novel material’s effectiveness compared to the conventional ceramic solutions by analyzing samples with different dimensions.

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Interference of Spread-Spectrum EMI and Digital Data Links under Narrowband Resonant Coupling

Cited by 17 publications

References 33 publications

The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel

The Effect of EMI Generated from Spread-Spectrum-Modulated SiC-Based Buck Converter on the G3-PLC Channel

Deterministic vs. Random Modulated Interference on G3 Power Line Communication

Characterization of Nanocrystalline Cores for EMI Suppression in Cables

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