On the characterization of EM emission of electronic products: Case study for different program modes
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Keywords:
Characterization, electronic product, EM emission, program modes, non-stationarity
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Abstract
The characterization of the EM emissions for electronic products is crucial to ensure that the emissions have met the requirements of the EMC standards. For this, a more comprehensive testing is required to get more meaningful results. While, the emergence of non-stationary emissions is a challenge to obtain valid analysis results. So far, non-stationary EM emissions is not considered and treated properly in the emission analysis. This paper presents a new method for the analysis of EM emissions from electronic devices as a case study by testing three different program modes (scenarios) of Intel Galileo board. These program modes were designed to vary processing intensity in its memory and processor. A comparison was also made between the actual situation (the presence of non-stationary signals) and the hypothetical situation with the assumption that all emissions were stationary. As a result, a significant difference was observed when the analysis considered the real scenario of a non-stationary emission. The ratio between the average autocorrelation using the proposed algorithm and the average correlation by ignoring the non-stationarity of the emission signal was 113.6 times. The study concludes that different program modes produce the different characteristics of EM emissions, making some of them non-stationary. Hence, we strongly suggest the consideration of the non-stationarity of the EM emissions in characterizing complex electronic devices.
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Yuwono, T., Baharuddin, M. H., Zhivomirov, H., & Wahyuni, E. G. (2024). On the characterization of EM emission of electronic products: Case study for different program modes. Communications in Science and Technology, 9(1), 38-45. https://doi.org/10.21924/cst.9.1.2024.1289
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