A Design Flow for Shaping Electromagnetic Emissions in Micropipeline Circuits

In order to keep the circuit electromagnetic emissions within a spectral mask, a design flow for micropipeline circuits is proposed. The model produces a quick and rough estimation of the circuit current, thanks to a Timed Petri Net determining the activation instants of the different micropipeline stages. The design flow exploits this current estimation for shaping the electromagnetic emissions by setting the controller delays of the micropipeline circuits. The delay adjustment is performed by a genetic algorithm which iterates until the electromagnetic emissions match the targeted spectral mask.