Title :
Chaos-based high-EMC spread-spectrum clock generator
Author :
De Michele, Luca Antonio ; Pareschi, Fabio ; Rovatti, Riccardo ; Setti, Gianluca
Author_Institution :
ARCES, Bologna Univ., Italy
fDate :
28 Aug.-2 Sept. 2005
Abstract :
This paper proposes a spread-spectrum clock generator which is meant to respect EMC norm compliance from standard regulations. This is obtained through a frequency modulation driven by a chaotic signal, i.e. through the injection of a chaos-based jitter, so to avoid strict periodicity in the clock and thus high peaks in its power spectral density. The circuit has been designed in 0.35 μm technology; measurements from prototypes show EMC improvement of approximately 18dB with respect to the reference case.
Keywords :
chaos; clocks; integrated circuit design; timing circuits; timing jitter; 0.35 micron; EMC norm compliance; chaos-based jitter; chaotic signal; electromagnetic compatible timing signals; frequency modulation; power spectral density; reference frequency; spread-spectrum clock generator; Chaos; Circuits; Clocks; Electromagnetic compatibility; Electromagnetic interference; Frequency modulation; Pulse measurements; Signal design; Signal generators; Spread spectrum communication;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1522936
