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Shaping Electromagnetic Emissions of Event-Driven Circuits Thanks to Genetic Algorithms

Authors:
Sophie Germain
Sylvain Engels
Laurent Fesquet

Keywords: Event-Driven Circuit; Micropipeline; Electromagnetic Spectrum

Abstract:
This paper presents a method to shape by design the electromagnetic spectrum of any event-driven circuits. Contrarily to synchronous circuits, which are driven by a clock, event-driven or asynchronous circuits can be tuned to adjust their computation instants by setting appropriated delays in their local synchronization mechanisms. Thanks to this prominent feature, shaping their electromagnetic spectrum is feasible. For that purpose, a mask in the frequency domain is defined to constrain their electromagnetic spectrum. Thanks to a genetic algorithm, well-suited delays are computed to be compliant with the mask. This approach has been evaluated on an event-driven micropipeline circuit. We observe that the resulting spectrum fits within the mask and does not present harmonics as its synchronous counterparts. Moreover, the highest peak of the event-driven circuit is 3.2 times smaller than the highest peak in the spectrum of the synchronous design.

Pages: 62 to 66

Copyright: Copyright (c) IARIA, 2018

Publication date: May 20, 2018

Published in: conference

ISSN: 2519-8432

ISBN: 978-1-61208-638-5

Location: Nice, France

Dates: from May 20, 2018 to May 24, 2018