Shielded cables have a layer of conductive material that surrounds the inner wires and helps to reduce electromagnetic interference (EMI) or radio frequency interference (RFI). The shielded material can be made up of various materials such as metal foils like aluminum or copper and braided metal wires made up of copper. The materials used to create the shield can vary based on the intended application for the cable. For example, in high EMI areas, multiple layers of shields may be used to provide additional protection.
The addition of a shield to a cable helps to reduce electromagnetic interference and improve the overall signal quality of the cable. The shield provides a barrier that helps to prevent external electrical noise from interfering with the signal that is being transmitted through the cable. The shield can be made of a variety of materials, such as copper or aluminum foil, braided wire, or a conductive polymer. The specific type of shield used will depend on the type of cable and the environment in which it will be used. Overall, adding a shield to a cable is an important step in ensuring reliable and high-quality signal transmission.
