substrate coupling

Substrate coupling refers to the unintended transfer of electrical signals between different parts of a device through the conductive material (substrate) it’s built on. When circuits are close together on the same substrate, electromagnetic signals or noise can travel through this shared material, causing interference or errors in the device’s operation. This phenomenon is important to consider in electronic design, especially for sensitive or high-frequency circuits, as it can affect performance and accuracy. Proper shielding, grounding, and layout techniques are used to minimize substrate coupling and ensure reliable operation.