It means lC and component which is connected to Ground. If a Ground plane is made as a separate layer, all these pins are to be connected. It can boost the performance of circuitry in certain conditions.
Sometimes vias are used for connections to ground planes.
Read More: Types of PCB Layers and Optimization
#PCB Design
The assembly note states: Bake bare PCBs in a clean and well ventilated oven prior to assembly at 125*C for 24 hours. Why is this necessary?
Designing wiring for automotive which will be equipped with antenna. Is it proper to use 50 ohm transmission line in this case?
I am designing a prototype PCB for a Lora node. It will have an SMA connector (J2) and a PCB antenna. Switching RF connectors are not available in my area, so as an amateur enthusiast what is a good way to separate the antennas?
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