electromagnetic interference (emi)
EMI or electromagnetic interference, happens when other electromagnetic fields disturb metallic systems and disrupt the normal operation of electronic components. The interference may be caused by natural or electronic devices and can cause sensitive systems to lose data, distort signals, or malfunction.
Key Feature:
- External Field Disturbance: An external electromagnetic wave from a nearby source is causing interference with the electronic signals in the system.
- Sensitive Equipment: High-precision or COMM-based electronics in metal enclosures or assemblies are the most affected.
- Shielding Needs: Usually under control by EMI shielding materials, grounded enclosures, or appropriate circuit design.
EMI is an important issue in the aerospace, telecommunications, and medical electronics industries, among others, in which signal integrity is essential. In aircraft systems, for example, EMI might cause interference in navigation or communication instruments and hence could result in dangerous situations.