What is the importance of a ground plane of a PCB?

I find that the all types of PCB samples from my suppliers have ground planes. It seems important and I want to know about its function.

Very important. Once the signal gets into the ground plane from the circuit, there will be a ripple. Ripple may spread and influence the signal in other circuits.
If we don’t have a ground plane, the ripple will last longer and may influence other circuits nearby.

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#PCB Design

Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.
Oliver Smith

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

What Others Are Asking

What do we need to check before releasing a PCB design?

After making efforts in a period, I finally finish my PCB design. Next step is releasing them to factory for production. To be honest, I don’t want any mistake on my file which may interrupt further prodution process. So what points should I pay attention when I double-check my design?

What is the difference between a prototype PCB and a production PCB?

My project have gone through from design, prototype to mass production after lots of discussion and adjustment. Now the manufacturer are making our products in their product lines. And I would like to know is there any differences between the prototypes in my hand now and the final products output by the manufacturer?

Is it ok to call all the chips with alphanumeric labels BGA (ball grid array)?

Some ICs have their pins labelled only with numerical values and some use alphanumeric labels. I want to know what is the correct naming term for these cases.
Is it ok to call all the chips with alphanumeric labels BGA (ball grid array)? And for chips with only numeric pin labels the chip should be called DIL (dual in line)?

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PCB Stackup Design Guide
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PCB Stackup Design Guidelines

People expect electronic products to be rich in functions, but also require them to be small and portable, which brings new challenges to circuit board

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