Coaxialkabelage

Coaxialkabelage, often simply referred to as coax cable, is a type of electrical cable that features an inner conductor surrounded by an insulating layer, which is then surrounded by a braided metal shield. A final outer insulating layer completes the cable. This construction provides excellent shielding against electromagnetic interference, making it ideal for transmitting radio frequency signals.

The most common application of coaxial cable is in the transmission of television signals, both terrestrial and cable TV. It is also widely used for internet connectivity through cable modems and in various radio and telecommunications systems. The impedance of coaxial cable, typically 50 or 75 ohms, is a critical parameter that determines its suitability for specific applications.

The inner conductor is usually a solid or stranded copper wire. The dielectric insulator, often made of polyethylene or Teflon, separates the inner conductor from the braided shield. The braided shield, typically copper or aluminum, acts as the second conductor and also prevents external radio frequency signals from interfering with the signal carried by the inner conductor. The outer jacket protects the cable from physical damage and environmental factors. Various types of coaxial cables exist, differing in size, shielding effectiveness, and temperature rating, to suit diverse installation requirements.