ELI5: Explain Like I'm 5

Substrate coupling

Substrate coupling is when electrical signals try to get from one electronic part to another through the material they are printed or mounted on. It's like two kids talking to each other in a very quiet library where they are not supposed to be loud, but they end up being too loud and other people can hear what they're saying.

In electronics, the material is called a substrate and it can be made of different materials like silicon, ceramic or plastic. When electrical currents go through one part, they create an electrical field around them that can affect nearby parts. This can cause unwanted noise, interference, or even damage to the electronic circuit.

It's like when you try to listen to a song but there is a lot of noise around, and it's hard to hear the music clearly. Similarly, electronic parts may not work properly if they are affected by unwanted signals, which is called signal interference.

To avoid substrate coupling, electronic designers need to carefully layout the parts on the substrate to minimize the chance of signals crossing over to other parts. They also use special techniques like shielding and isolation to protect the circuit from unwanted signals.

So, substrate coupling is like trying to keep parts of a song from crossing over and making other electronic parts noisy, and engineers have to work hard to make sure everything is nice and neat, like keeping your toys in the right place to avoid confusion and chaos.