System-Level EMI of an Artificial Router System With Multiple Radiators: Prediction and Validation

Zhang, Wei; Meiguni, Javad Soleiman; Ghosh, Kaustav; Patnaik, Abhishek; Sørensen, Morten; Hosseinbeig, Ahmad; Pommerenke, David; Rollin, Jacques; Li, Jing; Liu, Qian; Sochoux, Philippe; Kim, Dong-Hyun

doi:10.1109/temc.2020.3006517

Cited by 4 publications

(3 citation statements)

References 18 publications

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“…The 3D radiation pattern of a single optical module was measured as depicted in Figure 25(b). Statistical analysis and simulation were then performed to fast estimate the E field emission from multiple radiators without running actual hardware testing [12,13].…”

Section: Multiple Emi Radiatorsmentioning

confidence: 99%

“…More experiments were implemented in [13] to validate the 10logN tendency by using patch antennas to mimic the radiation of optical modules. The same agreement between measurement and estimation was observed.…”

Section: Multiple Emi Radiatorsmentioning

confidence: 99%

“…Another problem with large amounts of radiators in a complex system is the required hardware and testing time for EMC regulation tests. Hence, the authors in [12,13] derived a mathematical relation using statistical analysis to fast predict the maximum radiation from a large system with numerous similar sub-systems, with a level of certainty provided. Also, measurements were performed to validate the estimation.…”

Section: Introductionmentioning

confidence: 99%

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High-Frequency Electromagnetic Interference Diagnostics

Zhang¹,

Feng²,

Fan³

et al. 2022

Electromagnetic Wave Propagation for Industry and Biomedical Applications

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Electromagnetic interference (EMI) is becoming more troublesome in modern electronic systems due to the continuous increase of communication data rates. This chapter reviews some new methodologies for high-frequency EMI diagnostics in recent researches. Optical modules, as a typical type of gigahertz radiator, are studied in this chapter. First, the dominant radiation modules and EMI coupling paths in an explicit optical module are analyzed using simulation and measurement techniques. Correspondingly, practical mitigation approaches are proposed to suppress the radiation in real product applications. Moreover, an emission source microscopy (ESM) method, which can rapidly localize far-field radiators, is applied to diagnose multiple optical modules and identify the dominant sources. Finally, when numerous optical modules work simultaneously in a large network router, a formula based on statistical analysis can estimate the maximum far-field emission and the probability of passing electromagnetic compatibility (EMC) regulations. This chapter reviews a systematic procedure for EMI diagnostics at high frequencies, including EMI coupling path analysis and mitigation, emission source localization, and radiation estimation using statistical analysis.

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Section: Multiple Emi Radiatorsmentioning

confidence: 99%

Section: Multiple Emi Radiatorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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