Method of reducing signal attenuation in high speed PCB Board design

In high-speed PCB board design, the ground plane is divided into digital part and analog part, but these two parts should be connected near the power supply to provide a short reactance path.

What is electromigration? Analysis of IC electromigration in PCB Board

We all hope that the PCB board can be perfectly conductive and stable, but the actual situation is not so.