Cu Roughness and Trace Loss Explained (Lee Ritchey video)
Skin-effect pushes the current to the outer part of any metal conductor, which is why we need to worry about Cu roughness. For copper, as it is used on a printed circuit board (PCB) the effective skin depth goes like this over frequency. With signaling speeds on PCB going to 28 Gbit/s (example: FPGA’s in… Read more
M.Sc.EE, SI Consultant