Ground Plane Strategy for a 2-Layer PCB from an EMI/EMC Perspective

[timothy.phillips]

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Stack-Up Configurations for 2-layer and 4-layer PCBs

I am interested in learning about the stack-up configurations that others employ when designing 2-layer and 4-layer PCBs. For 2-layer PCBs, I typically utilize the top layer for signal and power traces, with a ground pour around the signal lines to reduce impedance. The bottom layer is dedicated entirely to ground. Although I have limited experience with 4-layer PCBs, my approach usually involves designating two layers as ground. For example, I might use a stack-up such as SIG/PWR—GND (core) S…