conductedemission

Conducted Emission is a term used in the field of electromagnetic compatibility (EMC) to describe the electromagnetic energy that is transmitted through a conductor, such as a wire or a cable. This energy can be in the form of radio frequency (RF) interference, which can disrupt the operation of electronic devices. Conducted emissions are a significant concern in the design and operation of electronic systems, as they can interfere with other devices and communication systems.

The primary sources of conducted emissions include switching power supplies, digital circuits, and other electronic components that generate high-frequency signals. These signals can couple to other conductors, such as power lines, ground wires, and signal lines, and radiate as electromagnetic interference (EMI). Conducted emissions can also be generated by the operation of motors, solenoids, and other electromechanical devices.

To mitigate conducted emissions, various techniques can be employed. Shielding is one common method, where conductors are enclosed in conductive materials to prevent the emission of electromagnetic energy. Filtering is another technique, where filters are used to block high-frequency signals from being transmitted through conductors. Proper grounding and bonding are also essential to minimize the coupling of conducted emissions to other conductors.

Conducted emissions are typically measured using specialized equipment, such as spectrum analyzers and EMI receivers. These measurements are used to identify the frequency and amplitude of the emissions, as well as their sources. Regulatory bodies, such as the Federal Communications Commission (FCC) in the United States, have established limits for conducted emissions to ensure the proper operation of electronic devices and to minimize interference with other systems. Compliance with these regulations is essential for the design and operation of electronic systems to ensure electromagnetic compatibility.