Signal integrity effect induced by designing and manufacturing of PCB

Signal integrity problem is considered as one key researching direction of high speed digital system in the way of reflection,crosstalk or electro magnetic interference.Signal integrity problem can be directly produced by integrated circuit(IC),chip packaging,printed circuit board(PCB) and system-level interconnection,while IC and PCB are attracted for studying signal integrity problem.The designing and manufacturing of PCB to introduce signal integrity problem were summarizes.