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Finite Element Modeling of Copper Foil Loss From AFM Measurements

DesignCon 2023 Best Paper Award Winner

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.    


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The Importance of Owning the PCB Stackup Process

In this article, Kella Knack outlines the stackup process, highlighting the importance of taking material issues, structural issues, and performance factors into account from the beginning of the design process. Knack discusses how providing fabricators with proper design documentation that includes precise information enables them to build to specification, ensuring correct functionality while avoiding additional costs for design.


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