![]() The dielectric insulator makes that happen. Thus, coax can be placed near other electronic equipment without any issues.įor optimal performance, the distance between the core and shield must be consistent throughout. The metal shield also helps protect the signal from electromagnetic interference. ![]() This allows the signal to remain intact and not bleed out like it would without the shield. Both components receive a current simultaneously, generating a magnetic field. To ensure a quality signal travels the length of the cable a metal shield is needed. How Do Coaxial Cables Work?Ĭoaxial cables transmit signals through the center wire. Outdoor-rated cables need extra insulation and special jackets to protect the wires from sun and moisture. Its rating (more on this later) lets you know where the cable can be installed. The final layer is a jacket that protects the whole configuration. Some coaxial cables are constructed with multiple shields for extra protection. It cancels outside electromagnetic interference. The metal shield, made of woven copper, aluminum, or other metals, wraps around the insulator. ![]() It keeps a constant distance between the center conductor and the next layer. A dielectric insulator, often made of plastic, surrounds the wire. For Commercial What Does A Coaxial Cable Look Like?īefore we get into how coax cables work, you need to know how they’re constructed.Īs you can see from the above image, there are four main parts to a coax cable:Īt the core, coaxial cables consist of a single copper or copper-coated steel wire.
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