EMI can be generated by a variety of sources, including electrical motors, radio transmitters, power lines, and other electronic devices.

EMI can be classified into two main types: conducted EMI, which is transmitted through electrical conductors, and radiated EMI, which is transmitted through the air.

EMI is the emission of electromagnetic interference, while EMC is the ability of a system to withstand EMI. EMC is achieved by designing systems that are immune to EMI and by using techniques to reduce the emission of EMI.

There are a variety of methods for mitigating EMI, including shielding, filtering, grounding, and using proper layout and design techniques.

Shielding is used to prevent EMI from entering a system and to prevent EMI from leaving a system.

Filtering is used to remove EMI from a signal.

Grounding is used to provide a low-impedance path for EMI to flow, which helps to reduce the amount of EMI that is emitted by a system.

There are a variety of layout and design techniques that can be used to mitigate EMI, including using twisted pair cables, keeping signal traces short and direct, and avoiding loops and ground loops.

EMI tests are used to measure the amount of EMI that a system emits and the amount of EMI that a system is susceptible to.

There are a variety of common EMI test standards, including FCC Part 15, CISPR 22, and MIL-STD-461.

An EMI test plan defines the scope of an EMI test, specifies the test procedures that will be used, and defines the acceptance criteria for the test.

Common EMI test facilities include anechoic chambers, Faraday cages, and GTEM cells.

EMI filters are used to remove EMI from a signal.

Common types of EMI filters include low-pass filters, high-pass filters, and band-pass filters.

EMI shields are used to prevent EMI from entering a system and to prevent EMI from leaving a system.