The signal integrity analysis of differential signal based on HyperLynx

In the design of high-speed digital circuit, the transmission of digital signal by the differential pair can solve signal integrity issues effectively. Making use of an actual PCB, its signal integrity and “eye diagram” performances were simulated by the HyperLynx software. The high-frequency performance of the PCB was improved, and the potential signal integrity problems were settled. It is proved that depending on the impedance controlling and matching, the differential pair can make the signal transmission more stable.