Yanice Baidouri is currently pursuing his engineering studies at CentraleSupélec, Paris, France. At Circuit Foil Luxembourg, as an R&D engineer, Yanice is researching the effects of copper foil roughness and passivation on insertion loss.
The roughness of copper foils has a detrimental effect on signal loss in PCBs. Therefore, reducing roughness is crucial in minimizing signal loss. Nevertheless, roughness is essential to ensure a good adherence between the prepreg and the copper foil. A compromise must be found between adherence and power integrity. This paper presents a novel approach to evaluate signal loss without assuming any specific roughness shape.