How to make pcb multilayer circuit board avoid electromagnetic interference

It is especially important that the electronic model of the electronic device and the frequency of the processor remain in normal operation. The electronic system is a part of a complex component. If radiation and electromagnetic interference may cause problems in the normal operation of the board, Effectively avoiding electromagnetic interference can make the mechanical components such as pcb multilayer circuit board run correctly and improve the anti-interference ability of the system. Which of the following is the analysis of the anti-electromagnetic interference method of pcb multilayer circuit board?

1. Control the interference source

    If the aluminum PCB multilayer circuit board wants better anti-interference in practical applications, it can use low-value inductors to reduce the signal problem of the pole and signal layer. In addition, the signal line is placed in the same pcb layer. The power supply layer is as close as possible to the ground plane. Only in this way can the possible electromagnetic interference factors be avoided as much as possible, so that the pcb multilayer circuit board exhibits better anti-interference effects.

2, pay attention to the layout of the parts

    Nowadays, pcb multi-layer circuit board manufacturers will process the parts in the actual design, and separate the strong and weak electrical signals, the digital and analog signal lines in the process of part layout and the filter network in each circuit. Connection, this can improve the anti-interference ability of pcb multilayer circuit board.

3, optimization of wiring

    The use of unreasonable wiring of the pcb multilayer circuit board may cause interference between the signal lines. Therefore, when the power line of the pcb multilayer circuit board is wired as much as possible, the loop resistance can be reduced and the signal line shortened. The number of vias should be as wide as possible when wiring, so that the wiring can meet the requirements for construction.