Ground loops created in PCB copper pour.

[Faringdon]

Hi,
I just did a ground copper pour in the PCB internal layer as attached.
But due to the way that the tracks have cut up the copper pour,
a ground loop has been created.
Would you be too concerned by these?
(as far as creating noise to interfere with the circuit, and with other
PCBs nearby)

[Buriedcode]

Pics or it didn't happen

[Gyro]

It seems to me that this is effectively a double post and the OP has people replying to both of them!

https://www.eevblog.com/forum/renewable-energy/keep-dead-copper-pours-on-pcb-that-needs-cooling/

[SiliconWizard]

I don't really get it. If you have internal layers - meaning at least a 4-layer PCB - then the usual, and reasonable approach is to dedicate one layer to GND without routing any signal on it, just a single plane and vias.

If you have routed other signals/power rails on the internal layer with a GND plane, then you either don't know how to lay out a PCB, or you're not using the right number of layers.
 

[JustMeHere]

Yes.  Noise makes ADCs useless and can cause glitches.

[Faringdon]

I don't really get it. If you have internal layers - meaning at least a 4-layer PCB - then the usual, and reasonable approach is to dedicate one layer to GND without routing any signal on it, just a single plane and vias.

If you have routed other signals/power rails on the internal layer with a GND plane, then you either don't know how to lay out a PCB, or you're not using the right number of layers.

Thanks, due to cost, we dont have possibility of >4 layers. Signals had to go on all 4 layers, there was no room otherwise.
Yes the inner "ground " plane is badly cut up, but we cant afford 6 layer board.

[Buriedcode]

The entire point of a board with more than two layers is so that you can have a nice continuous ground/power plane.  If you're routing signals like that on all four layers you either have an extremely dense board, or you're bad at routing.

I don't suppose you could post the other layers?  Or is it some super secret project?

Edit: typos

[Monkeh]

It's always too expensive to do it properly with treez.

[wraper]

That does not look that dense so you cannot dedicate one internal layer of 4 layer PCB to GND plane. Looks more like poor layout.