@inproceedings{1b544c92161d49fb8df7f74fdf3d8107,
title = "Practical Considerations of a Nested Spread Spectrum Modulation to Reduce Electromagnetic Emissions",
abstract = "This paper explores the use of spread spectrum clocking (SSC) to reduce electromagnetic emissions in clocked electronic systems by dispersing energy across the frequency spectrum around the clock signal's central frequency. Unlike the widely adopted conventional frequency modulation (FM) technique, this study focuses on an advanced nested frequency modulation approach, where a second modulation stage is introduced. This secondary modulation helps further distribute the energy into the unoccupied gaps between adjacent sidebands within the Carson bandwidth, thereby reducing peak emissions. A detailed analysis of the relationship between the two modulation frequencies and their impact on overall emission reduction is presented through simulation examples and measured results.",
keywords = "Clock Signal, EMI Reduction, Frequency Modulation, Nested Frequency Modulation, Spread Spectrum Clocking",
author = "Marco Pfeifer and Raphael Brugger and Bernd Deutschmann",
note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 International Symposium on Electromagnetic Compatibility, EMC Europe 2025 ; Conference date: 01-09-2025 Through 05-09-2025",
year = "2025",
month = sep,
day = "29",
doi = "10.1109/EMCEurope61644.2025.11176339",
language = "English",
isbn = "979-8-3315-9646-0",
series = "Proceedings of the International Symposium on Electromagnetic Compatibility, EMC Europe",
publisher = "IEEE",
pages = "344--349",
booktitle = "2025 International Symposium on Electromagnetic Compatibility – EMC Europe",
address = "United States",
}