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Chaotic modulations can outperform random ones in electromagnetic interference reduction tasks

Chaotic modulations can outperform random ones in electromagnetic interference reduction tasks

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The periodic signals used in electronic circuits (e.g. as timings) are a major cause of interference which can be reduced by introducing suitable modulations. Chaotic sources have so far been proposed for producing the modulating signals only as cheap replacements for random generators. Focusing on fast modulations it is shown that chaotic signals can also outperform random ones.

References

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      • Setti, G., Balestra, M., Rovatti, R.: `Experimental verification of enhanced electromagnetic compatibility in chaotic FM clock signals', Proc. IEEE ISCAS'00, 2000, Lausanne, Switzerland.
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      • Callegari, S., Rovatti, R., Setti, G.: `On the spectrum of signals obtained by driving FM modulators with chaotic sequences', Proc. EC-CTD2001, 2001, Helsinki, Finland, II, p. 189–192.
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      • `Methods of measurements of radio noise emission from computing devices', FCC/OST MP-4, July 1987.
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      • Hardin, K.B., Fessler, J.H., Bush, D.R., Booth, J.J.: `Spread spectrum clock generator and associated method', US, 5488627, 1996.
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